Release Healer Man 0.1.6

.editorconfig

@@ -0,0 +1,10 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{bat,cmd}]
+end_of_line = crlf

.gitattributes

@@ -0,0 +1,3 @@
+* text=auto eol=lf
+*.bat text eol=crlf
+*.cmd text eol=crlf

.vscode/settings.json

@@ -0,0 +1,6 @@
+{
+  "files.eol": "\n",
+  "files.insertFinalNewline": true,
+  "files.trimFinalNewlines": true,
+  "files.trimTrailingWhitespace": true
+}

AGENTS.md

@@ -2,6 +2,13 @@
 
 These rules apply to every change under this project root.
 
+## Text-file hygiene
+
+- Every text file must end with exactly one newline, with no extra blank line
+  at EOF and no trailing whitespace.
+- Before handing off changes, run `npm run release:check`. This check includes
+  untracked files; `git diff --check` alone does not.
+
 ## Workspace and reference boundaries
 
 - The active project root is `D:\Projects\HealerMan`. All implementation,
@@ -44,4 +51,3 @@ These rules apply to every change under this project root.
   - `document.pointerLockElement` remains `null`;
   - releasing right mouse stops camera motion;
   - no browser mouse-capture prompt appears.
-

DEPLOYMENT.md

@@ -185,6 +185,7 @@ on the development PC. Stop if any test or build fails:
 
 ```powershell
 Set-Location F:\Projects\HealerMan
+npm run release:check
 
 $VersionName = '0.1.3'
 $VersionCode = 1003
@@ -206,8 +207,8 @@ npm run build
 npm test -- --run src/avatar
 npx vitest run src/game/inputManager.test.ts src/game/inputMath.test.ts
 
+npm run release:check
 git status --short
-git diff --check
 git add -A
 git status --short
 git diff --cached --stat

PLAYTEST_NOTES.md

@@ -1421,3 +1421,33 @@ Vite's existing large-chunk advisory remains informational.
 - Verification: 38 focused party/pathing/jump/animation tests passed, all 28
   avatar tests passed, and `npm run build` completed successfully with 954
   modules transformed. The existing large-chunk advisory remains informational.
+
+# 2026-08-20 — shared online dungeon session with AI fill
+
+- Ran two signed-in production clients against the local account server on
+  separate browser origins. **SharedLeader / Bulwarka** invited
+  **SharedMember / Mendara**; the accepted group roster showed both selected
+  characters and their Tank and Healer roles as ready.
+- The leader launched Wailing Caverns with **Fill open slots with AI** enabled.
+  Both clients automatically entered the same activity, each rendered the
+  other player through the normal equipped `CharacterModel` path, and each
+  showed a live, targetable remote party frame. Three AI companions filled the
+  remaining slots, producing the expected five-member party on both clients.
+- The reciprocal scene captures showed Bulwarka and Mendara at the same shared
+  dungeon position with matching environment, objective, AI roster, mob state,
+  and remote role labels. The leader client continued encounter simulation;
+  the member client received the synchronized mob and AI state without running
+  a second competing world simulation.
+- From the member client, selected Bulwarka's online party frame and completed
+  a Lesser Heal cast. The member's mana/resource change propagated to the
+  leader client and both clients retained the same live remote health state.
+  Enemy combat and AI resource/health changes also continued to propagate while
+  the two clients remained connected.
+- Evidence reviewed during the browser run: invitation/group roster DOM,
+  coordinated-launch DOM from both clients, reciprocal full-window dungeon
+  captures, and before/cast-complete remote-healing DOM snapshots. No missing
+  character-body or equipment fallback appeared in either dungeon capture.
+- Verification: server/API tests passed all 11 cases, the complete Vitest suite
+  passed all 755 cases across 132 files (including the 28 avatar cases), and the
+  TypeScript production build completed successfully with 983 modules
+  transformed. The existing large-chunk advisory remains informational.

RELEASE_RUNBOOK.md

@@ -18,6 +18,21 @@ approval before it commits, pushes `main`, builds the signed APK, and publishes
 the Gitea release. Signing passwords and the Gitea token are passed to the
 child process in memory rather than on its command line.
 
+Before changing versions or running the longer test/build sequence, the manager
+runs an isolated release-candidate check. It validates tracked and untracked
+files without changing the real Git index, so extra blank lines at EOF and
+other whitespace errors fail immediately. Run the same fast check at any time:
+
+```powershell
+npm run release:check
+```
+
+Editors should honor the repository's `.editorconfig`. The checked-in VS Code
+settings also trim extra final newlines whenever a file is saved.
+Git may print a one-time CRLF-to-LF conversion warning when an existing Windows
+working copy is first staged under `.gitattributes`; that warning is not a
+release failure, and subsequent repository text stays consistently LF.
+
 The local release key is `F:\secure\healer-man-release.jks`. When the companion
 `healer-man-release-password.dpapi` file is present, blank signing-password
 fields are filled from that Windows user-encrypted credential in memory. The
@@ -254,11 +269,14 @@ npm run dev
 First check for whitespace errors and review the final file list:
 
 ```powershell
-git diff --check
+npm run release:check
 git status --short
 git diff --stat
 ```
 
+Use `npm run release:check` before the longer release validation. Unlike
+`git diff --check`, it includes new, untracked files.
+
 Stage the intended release:
 
 ```powershell
@@ -520,7 +538,7 @@ Set-Location F:\Projects\HealerMan
 npm run content:test
 npm run build
 git status --short
-git diff --check
+npm run release:check
 git add -A
 git status --short
 git diff --cached --stat

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "healer-man",
-  "version": "0.1.5",
+  "version": "0.1.6",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "healer-man",
-      "version": "0.1.5",
+      "version": "0.1.6",
       "dependencies": {
         "@capacitor/android": "8.4.1",
         "@capacitor/core": "8.4.1",

package.json

@@ -1,7 +1,7 @@
 {
   "name": "healer-man",
   "private": true,
-  "version": "0.1.5",
+  "version": "0.1.6",
   "type": "module",
   "scripts": {
     "dev": "vite --host 0.0.0.0",
@@ -98,6 +98,7 @@
     "android:apk": "npm run android:sync && powershell.exe -NoProfile -ExecutionPolicy Bypass -File scripts/runAndroidGradle.ps1 assembleDebug",
     "android:apk:release": "npm run android:sync && powershell.exe -NoProfile -ExecutionPolicy Bypass -File scripts/runAndroidGradle.ps1 assembleRelease",
     "android:install": "npm run android:sync && powershell.exe -NoProfile -ExecutionPolicy Bypass -File scripts/runAndroidGradle.ps1 installDebug",
+    "release:check": "python scripts/release_manager.py --check-release",
     "release:gui": "python scripts/release_manager.py",
     "preview": "vite preview --host 0.0.0.0",
     "pretest": "npm run loot:generate",

release-version.json

@@ -1,4 +1,4 @@
 {
-  "versionName": "0.1.5",
-  "versionCode": 1005
+  "versionName": "0.1.6",
+  "versionCode": 1006
 }

scripts/export-coa-triggered-spells.mjs

@@ -0,0 +1,194 @@
+import fs from "node:fs";
+import path from "node:path";
+
+const projectRoot = path.resolve(import.meta.dirname, "..");
+const clientRoot = path.resolve(projectRoot, "..", "LadiksMPQEditor", "client-current");
+const spellPath = path.join(clientRoot, "area-52", "patch-D", "DBFilesClient", "Spell.dbc");
+const supportRoot = path.join(clientRoot, "patch-S", "DBFilesClient");
+const runtimePath = path.join(projectRoot, "src", "game", "generated", "coaAbilityRuntimeCatalog.json");
+const outputPath = path.join(projectRoot, "src", "game", "generated", "coaTriggeredSpellCatalog.json");
+
+function assert(condition, message) {
+  if (!condition) throw new Error(message);
+}
+
+function dbcNumberTable(filePath, valueField, floating = false) {
+  const buffer = fs.readFileSync(filePath);
+  assert(buffer.toString("ascii", 0, 4) === "WDBC", `${path.basename(filePath)} is not a WDBC file`);
+  const recordCount = buffer.readUInt32LE(4);
+  const recordSize = buffer.readUInt32LE(12);
+  return new Map(Array.from({ length: recordCount }, (_, index) => {
+    const base = 20 + index * recordSize;
+    return [
+      buffer.readUInt32LE(base),
+      floating ? buffer.readFloatLE(base + valueField * 4) : buffer.readInt32LE(base + valueField * 4),
+    ];
+  }));
+}
+
+function dbcRangeTable(filePath) {
+  const buffer = fs.readFileSync(filePath);
+  assert(buffer.toString("ascii", 0, 4) === "WDBC", `${path.basename(filePath)} is not a WDBC file`);
+  const recordCount = buffer.readUInt32LE(4);
+  const recordSize = buffer.readUInt32LE(12);
+  return new Map(Array.from({ length: recordCount }, (_, index) => {
+    const base = 20 + index * recordSize;
+    return [buffer.readUInt32LE(base), {
+      min: Math.max(0, buffer.readFloatLE(base + 4), buffer.readFloatLE(base + 8)),
+      max: Math.max(0, buffer.readFloatLE(base + 12), buffer.readFloatLE(base + 16)),
+    }];
+  }));
+}
+
+function referencedSpellIds(runtime) {
+  const ids = new Set();
+  const inspectEffects = (effects) => {
+    for (const effect of effects ?? []) {
+      if (effect.kind === "trigger-spell" && effect.spellId > 0) ids.add(effect.spellId);
+      if (effect.kind !== "apply-aura") continue;
+      for (const proc of effect.aura?.procs ?? []) {
+        const spellId = proc.action?.kind === "custom" ? proc.action.data?.spellId : 0;
+        if (typeof spellId === "number" && spellId > 0) ids.add(spellId);
+      }
+    }
+  };
+  for (const abilities of Object.values(runtime.abilitiesByClass)) {
+    for (const ability of abilities) {
+      inspectEffects(ability.effects);
+      for (const rank of ability.ranks ?? []) inspectEffects(rank.effects);
+    }
+  }
+  return ids;
+}
+
+function cleanText(value) {
+  return value.replace(/\r/g, "").replace(/\s+/g, " ").trim();
+}
+
+function spellParser(buffer, castTimes, durations, radii, ranges) {
+  assert(buffer.toString("ascii", 0, 4) === "WDBC", "Spell.dbc is not a WDBC file");
+  const recordCount = buffer.readUInt32LE(4);
+  const fieldCount = buffer.readUInt32LE(8);
+  const recordSize = buffer.readUInt32LE(12);
+  const stringSize = buffer.readUInt32LE(16);
+  assert(fieldCount >= 234 && recordSize >= fieldCount * 4, "Unexpected Spell.dbc schema");
+  const stringsOffset = 20 + recordCount * recordSize;
+  const offsets = new Map(Array.from({ length: recordCount }, (_, index) => {
+    const base = 20 + index * recordSize;
+    return [buffer.readUInt32LE(base), base];
+  }));
+  const readString = (offset) => {
+    if (!offset || offset >= stringSize) return "";
+    const start = stringsOffset + offset;
+    const end = buffer.indexOf(0, start);
+    return buffer.toString("utf8", start, end < 0 ? buffer.length : end);
+  };
+  return (id) => {
+    const base = offsets.get(id);
+    if (base === undefined) return null;
+    const unsigned = (field) => buffer.readUInt32LE(base + field * 4);
+    const signed = (field) => buffer.readInt32LE(base + field * 4);
+    const float = (field) => buffer.readFloatLE(base + field * 4);
+    const localized = (firstField) => {
+      for (let locale = 0; locale < 16; locale += 1) {
+        const value = readString(unsigned(firstField + locale));
+        if (value) return cleanText(value);
+      }
+      return "";
+    };
+    const effects = Array.from({ length: 3 }, (_, effectIndex) => ({
+      index: effectIndex,
+      effectType: unsigned(71 + effectIndex),
+      auraType: unsigned(95 + effectIndex),
+      basePoints: signed(80 + effectIndex) + 1,
+      dieSides: signed(74 + effectIndex),
+      pointsPerLevel: float(77 + effectIndex),
+      mechanic: unsigned(83 + effectIndex),
+      implicitTargetA: unsigned(86 + effectIndex),
+      implicitTargetB: unsigned(89 + effectIndex),
+      radiusIndex: unsigned(92 + effectIndex),
+      radius: radii.get(unsigned(92 + effectIndex)) ?? 0,
+      periodMs: unsigned(98 + effectIndex),
+      valueMultiplier: float(101 + effectIndex),
+      chainTargets: unsigned(104 + effectIndex),
+      itemType: unsigned(107 + effectIndex),
+      miscValue: signed(110 + effectIndex),
+      miscValueB: signed(113 + effectIndex),
+      triggerSpellId: unsigned(116 + effectIndex),
+      pointsPerCombo: float(119 + effectIndex),
+      coefficient: float(229 + effectIndex),
+    })).filter((effect) => effect.effectType || effect.auraType || effect.basePoints !== 1 || effect.triggerSpellId);
+    return {
+      id,
+      name: localized(136),
+      rankText: localized(153),
+      description: localized(170) || localized(187),
+      categoryId: unsigned(1),
+      dispelType: unsigned(2),
+      mechanic: unsigned(3),
+      attributes: Array.from({ length: 8 }, (_, index) => unsigned(4 + index)),
+      castTimeIndex: unsigned(28),
+      castTimeMs: Math.max(0, castTimes.get(unsigned(28)) ?? 0),
+      recoveryTimeMs: unsigned(29),
+      categoryRecoveryTimeMs: unsigned(30),
+      interruptFlags: unsigned(31),
+      auraInterruptFlags: unsigned(32),
+      channelInterruptFlags: unsigned(33),
+      procFlags: unsigned(34),
+      procChance: unsigned(35),
+      procCharges: unsigned(36),
+      maxLevel: unsigned(37),
+      baseLevel: unsigned(38),
+      spellLevel: unsigned(39),
+      durationIndex: unsigned(40),
+      durationMs: durations.get(unsigned(40)) ?? 0,
+      powerType: signed(41),
+      powerCost: unsigned(42),
+      powerCostPerLevel: unsigned(43),
+      powerCostPerSecond: unsigned(44),
+      powerCostPerSecondPerLevel: unsigned(45),
+      rangeIndex: unsigned(46),
+      rangeMin: ranges.get(unsigned(46))?.min ?? 0,
+      rangeMax: ranges.get(unsigned(46))?.max ?? 0,
+      projectileSpeed: float(47),
+      stackAmount: unsigned(49),
+      equippedItemClass: signed(67),
+      equippedItemSubclassMask: signed(68),
+      equippedItemInventoryMask: signed(69),
+      iconId: unsigned(133),
+      powerCostPercentage: unsigned(204),
+      startRecoveryCategory: unsigned(205),
+      startRecoveryTimeMs: unsigned(206),
+      maximumTargets: unsigned(212),
+      damageClass: unsigned(213),
+      preventionType: unsigned(214),
+      schoolMask: unsigned(225),
+      runeCostId: unsigned(226),
+      powerDisplayId: unsigned(228),
+      effects,
+    };
+  };
+}
+
+assert(fs.existsSync(spellPath), `CoA Spell.dbc was not found at ${spellPath}`);
+const runtime = JSON.parse(fs.readFileSync(runtimePath, "utf8"));
+const castTimes = dbcNumberTable(path.join(supportRoot, "SpellCastTimes.dbc"), 1);
+const durations = dbcNumberTable(path.join(supportRoot, "SpellDuration.dbc"), 3);
+const radii = dbcNumberTable(path.join(supportRoot, "SpellRadius.dbc"), 3, true);
+const ranges = dbcRangeTable(path.join(supportRoot, "SpellRange.dbc"));
+const parseSpell = spellParser(fs.readFileSync(spellPath), castTimes, durations, radii, ranges);
+const pending = [...referencedSpellIds(runtime)];
+const spells = new Map();
+while (pending.length) {
+  const id = pending.shift();
+  if (spells.has(id)) continue;
+  const spell = parseSpell(id);
+  if (!spell) continue;
+  spells.set(id, spell);
+  for (const effect of spell.effects) {
+    if (effect.triggerSpellId > 0 && !spells.has(effect.triggerSpellId)) pending.push(effect.triggerSpellId);
+  }
+}
+
+fs.writeFileSync(outputPath, `${JSON.stringify({ schemaVersion: 1, spells: [...spells.values()] })}\n`, "utf8");
+console.log(`Wrote ${outputPath} with ${spells.size} triggered spell records.`);

scripts/generate-combat-runtime-catalogs.ts

@@ -4,6 +4,7 @@ import { CLASSES, type CoaClassId } from "../src/app/characterCatalog";
 import {
   COA_ABILITIES_BY_CLASS,
   COA_CLASS_RESOURCES,
+  COA_TRIGGERED_ABILITIES_BY_SPELL_ID,
 } from "../src/game/coaAbilityCatalog";
 import {
   COA_LIVE_SOURCE,
@@ -25,6 +26,7 @@ writeJson("src/game/generated/coaAbilityRuntimeCatalog.json", {
   schemaVersion: 1,
   abilitiesByClass: COA_ABILITIES_BY_CLASS,
   resourcesByClass: COA_CLASS_RESOURCES,
+  triggeredAbilitiesBySpellId: COA_TRIGGERED_ABILITIES_BY_SPELL_ID,
 });
 
 const coaBudgetsByClass = Object.fromEntries(CLASSES

scripts/release_manager.py

@@ -15,6 +15,7 @@ import re
 import shutil
 import subprocess
 import sys
+import tempfile
 import threading
 import webbrowser
 from dataclasses import dataclass
@@ -226,6 +227,67 @@ def current_commit() -> str:
         return ""
 
 
+def validate_release_candidates(project_root: Path = PROJECT_ROOT) -> list[str]:
+    """Check tracked and untracked release files without changing the real index."""
+    with tempfile.TemporaryDirectory(prefix="healer-man-release-index-") as temp_dir:
+        environment = os.environ.copy()
+        environment["GIT_INDEX_FILE"] = str(Path(temp_dir) / "index")
+
+        def run_temporary_index_command(*args: str) -> subprocess.CompletedProcess[bytes]:
+            result = subprocess.run(
+                ["git", *args],
+                cwd=project_root,
+                env=environment,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.STDOUT,
+                check=False,
+            )
+            if result.returncode != 0:
+                output = result.stdout.decode("utf-8", errors="replace").strip()
+                raise ReleaseError(
+                    f"Release-candidate Git check failed ({result.returncode}): "
+                    f"git {' '.join(args)}\n{output}"
+                )
+            return result
+
+        run_temporary_index_command("read-tree", "HEAD")
+        run_temporary_index_command("add", "-A")
+        raw_paths = run_temporary_index_command(
+            "diff", "--cached", "--name-only", "-z"
+        ).stdout
+        staged_paths = [
+            path.decode("utf-8", errors="replace")
+            for path in raw_paths.split(b"\0")
+            if path
+        ]
+
+        whitespace_result = subprocess.run(
+            ["git", "diff", "--cached", "--check"],
+            cwd=project_root,
+            env=environment,
+            text=True,
+            encoding="utf-8",
+            errors="replace",
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+            check=False,
+        )
+        if whitespace_result.returncode != 0:
+            detail = whitespace_result.stdout.strip()
+            raise ReleaseError(
+                "Release-candidate whitespace check failed. This check includes "
+                f"tracked and untracked files:\n{detail}"
+            )
+
+        dangerous = find_dangerous_staged_paths(staged_paths)
+        if dangerous:
+            raise ReleaseError(
+                "Refusing to release forbidden output or a possible secret:\n"
+                + "\n".join(f"  - {path}" for path in dangerous)
+            )
+        return staged_paths
+
+
 def windows_powershell_environment(powershell: str) -> dict[str, str]:
     environment = os.environ.copy()
     if Path(powershell).name.lower() == "powershell.exe":
@@ -1003,6 +1065,15 @@ def launch_gui(*, smoke_test: bool = False) -> int:
             credentials: dict[str, str],
         ) -> None:
             self._preflight_git(require_clean=False)
+            self._log_event(
+                "\n--- Early release-candidate check ---\n"
+                "$ npm run release:check"
+            )
+            candidate_paths = validate_release_candidates()
+            self._log_event(
+                f"✓ Early release-candidate check passed "
+                f"({len(candidate_paths)} changed path(s), including untracked files)"
+            )
             npm = shutil.which("npm")
             powershell = shutil.which("powershell.exe") or shutil.which("powershell")
             if not npm or not powershell:
@@ -1034,7 +1105,6 @@ def launch_gui(*, smoke_test: bool = False) -> int:
                 )
                 for command, label in checks:
                     self._run_command(command, label)
-                self._run_command(["git", "diff", "--check"], "Whitespace check")
                 self._run_command(["git", "add", "-A"], "Stage release")
                 staged = True
 
@@ -1371,12 +1441,28 @@ def main(argv: Sequence[str] | None = None) -> int:
         action="store_true",
         help="print release/version/Git readiness without opening the GUI",
     )
+    parser.add_argument(
+        "--check-release",
+        action="store_true",
+        help="check all release candidates, including untracked files",
+    )
     parser.add_argument(
         "--smoke-test",
         action="store_true",
         help=argparse.SUPPRESS,
     )
     args = parser.parse_args(argv)
+    if args.check_release:
+        try:
+            paths = validate_release_candidates()
+            print(
+                f"Release candidate check passed: {len(paths)} changed path(s), "
+                "including untracked files."
+            )
+        except Exception as exc:
+            print(f"Release candidate check failed: {exc}", file=sys.stderr)
+            return 1
+        return 0
     if args.check:
         try:
             print(json.dumps(check_summary(), indent=2))

scripts/release_manager_test.py

@@ -1,4 +1,7 @@
+import subprocess
+import tempfile
 import unittest
+from pathlib import Path
 
 import release_manager
 
@@ -45,5 +48,57 @@ class SafetyTests(unittest.TestCase):
         self.assertIn('test "$ACTUAL_COMMIT" = "$EXPECTED_COMMIT"', block)
 
 
+class ReleaseCandidateTests(unittest.TestCase):
+    def test_checks_untracked_files_without_changing_the_real_index(self):
+        with tempfile.TemporaryDirectory() as temp_dir:
+            project_root = Path(temp_dir)
+
+            def git(*args):
+                subprocess.run(
+                    ["git", *args],
+                    cwd=project_root,
+                    stdout=subprocess.PIPE,
+                    stderr=subprocess.PIPE,
+                    check=True,
+                )
+
+            git("init", "--quiet")
+            (project_root / "tracked.ts").write_text("export const tracked = true;\n")
+            git("add", "tracked.ts")
+            git(
+                "-c",
+                "user.name=Healer Man Tests",
+                "-c",
+                "user.email=tests@example.invalid",
+                "commit",
+                "--quiet",
+                "-m",
+                "Initial commit",
+            )
+
+            untracked = project_root / "untracked.ts"
+            untracked.write_text("export const untracked = true;\n\n")
+            with self.assertRaisesRegex(
+                release_manager.ReleaseError, "untracked.ts.*new blank line at EOF"
+            ):
+                release_manager.validate_release_candidates(project_root)
+
+            untracked.write_text("export const untracked = true;\n")
+            self.assertEqual(
+                release_manager.validate_release_candidates(project_root),
+                ["untracked.ts"],
+            )
+            self.assertEqual(
+                subprocess.run(
+                    ["git", "diff", "--cached", "--name-only"],
+                    cwd=project_root,
+                    text=True,
+                    stdout=subprocess.PIPE,
+                    check=True,
+                ).stdout,
+                "",
+            )
+
+
 if __name__ == "__main__":
     unittest.main()

scripts/runewaker-pipeline/export-player-catalog.mjs

@@ -162,6 +162,7 @@ function componentFor(id) {
   };
   const attack = {
     type: int32(buffers.magicObject, offset + 0x194),
+    calculationType: int32(buffers.magicObject, offset + 0x2d4),
     damagePower: cleanFloat(float32(buffers.magicObject, offset + 0x198)),
     damagePowerSkillLevelArg: cleanFloat(float32(buffers.magicObject, offset + 0x19c)),
     fixedValue: cleanFloat(float32(buffers.magicObject, offset + 0x1a0)),
@@ -297,7 +298,9 @@ function sourceSpell(spellId, classIndex) {
   })).filter((cost) => cost.type > 0 && cost.value !== 0 && ![9, 10, 11, 12, 13, 14, 15].includes(cost.type));
   const costs = costRows.map((cost) => ({
     resource: resourceForCostType(cost.type, classIndex),
-    amount: Math.max(0, Math.min(100, Math.abs(cost.value))),
+    amount: Math.max(0, cost.type === 3 || cost.type === 4
+      ? Math.min(100, Math.abs(cost.value))
+      : Math.abs(cost.value)),
     percentage: cost.type === 3 || cost.type === 4,
   }));
   const attackDistance = int32(buffers.magicCollect, offset + 0xbc);

server/database.mjs

@@ -86,6 +86,34 @@ export function openGameDatabase(options = {}) {
       updated_by_username TEXT,
       updated_at INTEGER
     ) STRICT;
+    CREATE TABLE IF NOT EXISTS online_groups (
+      id TEXT PRIMARY KEY,
+      leader_account_id TEXT NOT NULL REFERENCES accounts(id) ON DELETE CASCADE,
+      activity_json TEXT,
+      activity_revision INTEGER NOT NULL DEFAULT 0,
+      created_at INTEGER NOT NULL,
+      updated_at INTEGER NOT NULL
+    ) STRICT;
+    CREATE TABLE IF NOT EXISTS online_group_members (
+      group_id TEXT NOT NULL REFERENCES online_groups(id) ON DELETE CASCADE,
+      account_id TEXT NOT NULL UNIQUE REFERENCES accounts(id) ON DELETE CASCADE,
+      character_json TEXT,
+      role TEXT,
+      joined_at INTEGER NOT NULL,
+      PRIMARY KEY (group_id, account_id)
+    ) STRICT;
+    CREATE INDEX IF NOT EXISTS online_group_members_group_idx ON online_group_members(group_id, joined_at);
+    CREATE TABLE IF NOT EXISTS online_group_invites (
+      id TEXT PRIMARY KEY,
+      group_id TEXT NOT NULL REFERENCES online_groups(id) ON DELETE CASCADE,
+      inviter_account_id TEXT NOT NULL REFERENCES accounts(id) ON DELETE CASCADE,
+      invitee_account_id TEXT NOT NULL REFERENCES accounts(id) ON DELETE CASCADE,
+      status TEXT NOT NULL,
+      created_at INTEGER NOT NULL,
+      expires_at INTEGER NOT NULL
+    ) STRICT;
+    CREATE INDEX IF NOT EXISTS online_group_invites_invitee_idx
+      ON online_group_invites(invitee_account_id, status, expires_at);
   `);
   database.prepare(`
     INSERT OR IGNORE INTO manastorm_admin_config (
@@ -253,6 +281,282 @@ export function openGameDatabase(options = {}) {
     };
   }
 
+  function pruneExpiredGroupInvites() {
+    database.prepare(`
+      UPDATE online_group_invites SET status = 'expired'
+      WHERE status = 'pending' AND expires_at <= ?
+    `).run(Date.now());
+  }
+
+  function parseStoredJson(value, fallback = null) {
+    if (typeof value !== "string" || !value) return fallback;
+    try { return JSON.parse(value); } catch { return fallback; }
+  }
+
+  function groupMembership(accountId) {
+    return database.prepare(`
+      SELECT online_groups.*
+      FROM online_group_members
+      JOIN online_groups ON online_groups.id = online_group_members.group_id
+      WHERE online_group_members.account_id = ?
+    `).get(accountId);
+  }
+
+  function publicGroup(groupId) {
+    const group = database.prepare("SELECT * FROM online_groups WHERE id = ?").get(groupId);
+    if (!group) return null;
+    const members = database.prepare(`
+      SELECT accounts.id AS account_id, accounts.username,
+        online_group_members.character_json, online_group_members.role,
+        online_group_members.joined_at
+      FROM online_group_members
+      JOIN accounts ON accounts.id = online_group_members.account_id
+      WHERE online_group_members.group_id = ?
+      ORDER BY online_group_members.joined_at, accounts.username_key
+    `).all(groupId).map((member) => ({
+      accountId: member.account_id,
+      username: member.username,
+      character: parseStoredJson(member.character_json),
+      role: ["tank", "healer", "damage"].includes(member.role) ? member.role : null,
+      joinedAt: Number(member.joined_at),
+    }));
+    return {
+      id: group.id,
+      leaderAccountId: group.leader_account_id,
+      members,
+      activity: parseStoredJson(group.activity_json),
+      activityRevision: Number(group.activity_revision),
+      createdAt: Number(group.created_at),
+      updatedAt: Number(group.updated_at),
+    };
+  }
+
+  function onlineGroupState(accountId) {
+    pruneExpiredGroupInvites();
+    const membership = groupMembership(accountId);
+    const invitations = database.prepare(`
+      SELECT online_group_invites.id, online_group_invites.group_id,
+        online_group_invites.created_at, online_group_invites.expires_at,
+        accounts.id AS inviter_account_id, accounts.username AS inviter_username
+      FROM online_group_invites
+      JOIN accounts ON accounts.id = online_group_invites.inviter_account_id
+      WHERE online_group_invites.invitee_account_id = ?
+        AND online_group_invites.status = 'pending'
+        AND online_group_invites.expires_at > ?
+      ORDER BY online_group_invites.created_at DESC
+    `).all(accountId, Date.now()).map((invite) => ({
+      id: invite.id,
+      groupId: invite.group_id,
+      inviterAccountId: invite.inviter_account_id,
+      inviterUsername: invite.inviter_username,
+      createdAt: Number(invite.created_at),
+      expiresAt: Number(invite.expires_at),
+    }));
+    return { group: membership ? publicGroup(membership.id) : null, invitations };
+  }
+
+  function createOnlineGroup(accountId) {
+    const existing = groupMembership(accountId);
+    if (existing) return existing;
+    const id = `group-${randomUUID()}`;
+    const now = Date.now();
+    database.prepare(`
+      INSERT INTO online_groups (id, leader_account_id, activity_json, activity_revision, created_at, updated_at)
+      VALUES (?, ?, NULL, 0, ?, ?)
+    `).run(id, accountId, now, now);
+    database.prepare(`
+      INSERT INTO online_group_members (group_id, account_id, character_json, role, joined_at)
+      VALUES (?, ?, NULL, NULL, ?)
+    `).run(id, accountId, now);
+    return database.prepare("SELECT * FROM online_groups WHERE id = ?").get(id);
+  }
+
+  function inviteOnlineGroupMember(account, usernameInput) {
+    pruneExpiredGroupInvites();
+    const username = typeof usernameInput === "string" ? usernameInput.trim() : "";
+    if (!username) throw new GameDatabaseError("Enter the player's account name.", 400, "missing_username");
+    const invitee = statements.accountByUsername.get(username.toLowerCase());
+    if (!invitee) throw new GameDatabaseError("No online player has that account name.", 404, "player_not_found");
+    if (invitee.id === account.id) throw new GameDatabaseError("You cannot invite yourself.", 400, "cannot_invite_self");
+    if (groupMembership(invitee.id)) throw new GameDatabaseError("That player is already in a group.", 409, "player_already_grouped");
+    const group = createOnlineGroup(account.id);
+    const memberCount = Number(database.prepare("SELECT COUNT(*) AS count FROM online_group_members WHERE group_id = ?").get(group.id).count);
+    if (memberCount >= 5) throw new GameDatabaseError("Your group is already full.", 409, "group_full");
+    const existing = database.prepare(`
+      SELECT id FROM online_group_invites
+      WHERE group_id = ? AND invitee_account_id = ? AND status = 'pending' AND expires_at > ?
+    `).get(group.id, invitee.id, Date.now());
+    if (existing) throw new GameDatabaseError("That player already has an invitation from your group.", 409, "invite_exists");
+    const id = `invite-${randomUUID()}`;
+    const createdAt = Date.now();
+    const expiresAt = createdAt + 10 * 60 * 1000;
+    database.prepare(`
+      INSERT INTO online_group_invites (
+        id, group_id, inviter_account_id, invitee_account_id, status, created_at, expires_at
+      ) VALUES (?, ?, ?, ?, 'pending', ?, ?)
+    `).run(id, group.id, account.id, invitee.id, createdAt, expiresAt);
+    return { id, expiresAt, state: onlineGroupState(account.id) };
+  }
+
+  function respondToOnlineGroupInvite(accountId, inviteId, accept) {
+    pruneExpiredGroupInvites();
+    const invite = database.prepare(`
+      SELECT * FROM online_group_invites
+      WHERE id = ? AND invitee_account_id = ? AND status = 'pending' AND expires_at > ?
+    `).get(inviteId, accountId, Date.now());
+    if (!invite) throw new GameDatabaseError("That group invitation is no longer available.", 404, "invite_not_found");
+    if (!accept) {
+      database.prepare("UPDATE online_group_invites SET status = 'declined' WHERE id = ?").run(invite.id);
+      return onlineGroupState(accountId);
+    }
+    if (groupMembership(accountId)) throw new GameDatabaseError("Leave your current group before accepting another invitation.", 409, "already_grouped");
+    const group = database.prepare("SELECT * FROM online_groups WHERE id = ?").get(invite.group_id);
+    if (!group) throw new GameDatabaseError("That group no longer exists.", 404, "group_not_found");
+    const memberCount = Number(database.prepare("SELECT COUNT(*) AS count FROM online_group_members WHERE group_id = ?").get(group.id).count);
+    if (memberCount >= 5) throw new GameDatabaseError("That group is already full.", 409, "group_full");
+    const now = Date.now();
+    database.prepare(`
+      INSERT INTO online_group_members (group_id, account_id, character_json, role, joined_at)
+      VALUES (?, ?, NULL, NULL, ?)
+    `).run(group.id, accountId, now);
+    database.prepare("UPDATE online_group_invites SET status = 'accepted' WHERE id = ?").run(invite.id);
+    database.prepare(`
+      UPDATE online_group_invites SET status = 'expired'
+      WHERE invitee_account_id = ? AND status = 'pending'
+    `).run(accountId);
+    database.prepare(`
+      UPDATE online_groups SET activity_json = NULL, activity_revision = activity_revision + 1, updated_at = ? WHERE id = ?
+    `).run(now, group.id);
+    return onlineGroupState(accountId);
+  }
+
+  function leaveOnlineGroup(accountId) {
+    const group = groupMembership(accountId);
+    if (!group) return onlineGroupState(accountId);
+    database.prepare("DELETE FROM online_group_members WHERE group_id = ? AND account_id = ?").run(group.id, accountId);
+    const remaining = database.prepare(`
+      SELECT account_id FROM online_group_members WHERE group_id = ? ORDER BY joined_at LIMIT 1
+    `).get(group.id);
+    if (!remaining) {
+      database.prepare("DELETE FROM online_groups WHERE id = ?").run(group.id);
+    } else {
+      database.prepare(`
+        UPDATE online_groups
+        SET leader_account_id = CASE WHEN leader_account_id = ? THEN ? ELSE leader_account_id END,
+          activity_json = NULL, activity_revision = activity_revision + 1, updated_at = ?
+        WHERE id = ?
+      `).run(accountId, remaining.account_id, Date.now(), group.id);
+    }
+    return onlineGroupState(accountId);
+  }
+
+  function removeOnlineGroupMember(accountId, targetAccountId) {
+    const group = groupMembership(accountId);
+    if (!group || group.leader_account_id !== accountId) {
+      throw new GameDatabaseError("Only the group leader can remove players.", 403, "leader_required");
+    }
+    if (targetAccountId === accountId) return leaveOnlineGroup(accountId);
+    const removed = database.prepare(`
+      DELETE FROM online_group_members WHERE group_id = ? AND account_id = ?
+    `).run(group.id, targetAccountId);
+    if (!removed.changes) throw new GameDatabaseError("That player is not in your group.", 404, "member_not_found");
+    database.prepare(`
+      UPDATE online_groups SET activity_json = NULL, activity_revision = activity_revision + 1, updated_at = ? WHERE id = ?
+    `).run(Date.now(), group.id);
+    return onlineGroupState(accountId);
+  }
+
+  function normalizeGroupCharacter(character) {
+    if (!character || typeof character !== "object" || Array.isArray(character)) return null;
+    const id = String(character.id ?? "").slice(0, 100);
+    const name = String(character.name ?? "").trim().slice(0, 30);
+    const classId = String(character.classId ?? "").slice(0, 50);
+    if (!id || !name || !classId) throw new GameDatabaseError("Select a valid character for the group.", 400, "invalid_group_character");
+    let appearance = {};
+    if (character.appearance && typeof character.appearance === "object" && !Array.isArray(character.appearance)) {
+      try {
+        const serialized = JSON.stringify(character.appearance);
+        if (serialized.length <= 8 * 1024) appearance = JSON.parse(serialized);
+      } catch {
+        appearance = {};
+      }
+    }
+    return {
+      id,
+      name,
+      classId,
+      categoryId: String(character.categoryId ?? "wow").slice(0, 20),
+      raceId: String(character.raceId ?? "human").slice(0, 50),
+      gender: character.gender === "female" ? "female" : "male",
+      level: Math.max(1, Math.min(1000, Math.trunc(Number(character.level) || 1))),
+      appearance,
+    };
+  }
+
+  function updateOnlineGroupMember(accountId, character, role) {
+    const group = groupMembership(accountId);
+    if (!group) throw new GameDatabaseError("Join or create a group first.", 409, "group_required");
+    if (!["tank", "healer", "damage"].includes(role)) {
+      throw new GameDatabaseError("Choose a valid party role.", 400, "invalid_party_role");
+    }
+    database.prepare(`
+      UPDATE online_group_members SET character_json = ?, role = ?
+      WHERE group_id = ? AND account_id = ?
+    `).run(JSON.stringify(normalizeGroupCharacter(character)), role, group.id, accountId);
+    database.prepare("UPDATE online_groups SET updated_at = ? WHERE id = ?").run(Date.now(), group.id);
+    return onlineGroupState(accountId);
+  }
+
+  function startOnlineGroupActivity(accountId, input) {
+    const group = groupMembership(accountId);
+    if (!group || group.leader_account_id !== accountId) {
+      throw new GameDatabaseError("Only the group leader can start an activity.", 403, "leader_required");
+    }
+    const type = input?.type;
+    if (type !== "dungeon" && type !== "manastorm") {
+      throw new GameDatabaseError("Choose a Dungeon or Manastorm.", 400, "invalid_activity_type");
+    }
+    const contentId = String(input?.contentId ?? "").trim().slice(0, 120);
+    if (!contentId) throw new GameDatabaseError("Choose content before starting.", 400, "missing_content");
+    const members = database.prepare(`
+      SELECT account_id, character_json, role FROM online_group_members WHERE group_id = ? ORDER BY joined_at
+    `).all(group.id);
+    if (members.some((member) => !member.character_json || !["tank", "healer", "damage"].includes(member.role))) {
+      throw new GameDatabaseError("Every player must select a character and party role before the group can start.", 409, "group_not_ready");
+    }
+    const fillWithAi = input?.fillWithAi !== false;
+    const requestedSize = Math.max(1, Math.min(5, Math.trunc(Number(input?.partySize) || 5)));
+    const partySize = fillWithAi ? Math.max(members.length, requestedSize) : members.length;
+    const activity = {
+      id: `activity-${randomUUID()}`,
+      type,
+      contentId,
+      fillWithAi,
+      partySize,
+      startingLevel: type === "manastorm"
+        ? Math.max(1, Math.trunc(Number(input?.startingLevel) || 1))
+        : null,
+      startedAt: Date.now(),
+    };
+    database.prepare(`
+      UPDATE online_groups
+      SET activity_json = ?, activity_revision = activity_revision + 1, updated_at = ?
+      WHERE id = ?
+    `).run(JSON.stringify(activity), activity.startedAt, group.id);
+    return onlineGroupState(accountId);
+  }
+
+  function clearOnlineGroupActivity(accountId) {
+    const group = groupMembership(accountId);
+    if (!group || group.leader_account_id !== accountId) {
+      throw new GameDatabaseError("Only the group leader can reset the activity.", 403, "leader_required");
+    }
+    database.prepare(`
+      UPDATE online_groups SET activity_json = NULL, activity_revision = activity_revision + 1, updated_at = ? WHERE id = ?
+    `).run(Date.now(), group.id);
+    return onlineGroupState(accountId);
+  }
+
   return {
     databasePath,
     register,
@@ -264,6 +568,14 @@ export function openGameDatabase(options = {}) {
     isGameMaster,
     getManastormConfig,
     putManastormConfig,
+    onlineGroupState,
+    inviteOnlineGroupMember,
+    respondToOnlineGroupInvite,
+    leaveOnlineGroup,
+    removeOnlineGroupMember,
+    updateOnlineGroupMember,
+    startOnlineGroupActivity,
+    clearOnlineGroupActivity,
     pruneExpiredSessions: () => Number(statements.deleteExpiredSessions.run(Date.now()).changes),
     close: () => database.close(),
   };

server/database.test.mjs

@@ -122,3 +122,60 @@ test("persists revisioned Manastorm GM configuration and rejects stale or unauth
     bosses: { "boss:incomplete": { status: "ready" } },
   }), (error) => error instanceof GameDatabaseError && error.status === 400);
 }));
+
+test("creates online groups through invitations and transfers leadership when the leader leaves", () => withDatabase(async (database) => {
+  const leaderAuth = await database.register("GroupLeader", "group-pass");
+  const healerAuth = await database.register("GroupHealer", "healer-pass");
+  const leader = database.authenticate(leaderAuth.token);
+  const healer = database.authenticate(healerAuth.token);
+
+  const invitation = database.inviteOnlineGroupMember(leader, "grouphealer");
+  assert.equal(invitation.state.group.members.length, 1);
+  const incoming = database.onlineGroupState(healer.id).invitations;
+  assert.equal(incoming.length, 1);
+  assert.equal(incoming[0].inviterUsername, "GroupLeader");
+
+  const accepted = database.respondToOnlineGroupInvite(healer.id, incoming[0].id, true);
+  assert.equal(accepted.group.members.length, 2);
+  assert.equal(accepted.group.leaderAccountId, leader.id);
+
+  database.leaveOnlineGroup(leader.id);
+  const transferred = database.onlineGroupState(healer.id);
+  assert.equal(transferred.group.leaderAccountId, healer.id);
+  assert.deepEqual(transferred.group.members.map((member) => member.username), ["GroupHealer"]);
+}));
+
+test("launches players-only and AI-filled group activities only when every member is ready", () => withDatabase(async (database) => {
+  const leaderAuth = await database.register("ReadyLeader", "group-pass");
+  const memberAuth = await database.register("ReadyMember", "member-pass");
+  const leader = database.authenticate(leaderAuth.token);
+  const member = database.authenticate(memberAuth.token);
+  database.inviteOnlineGroupMember(leader, member.username);
+  const invite = database.onlineGroupState(member.id).invitations[0];
+  database.respondToOnlineGroupInvite(member.id, invite.id, true);
+
+  database.updateOnlineGroupMember(leader.id, {
+    id: "leader-character", name: "Leadwell", classId: "warrior", raceId: "human", gender: "male", level: 20,
+  }, "tank");
+  assert.throws(() => database.startOnlineGroupActivity(leader.id, {
+    type: "dungeon", contentId: "wailing-caverns", fillWithAi: true, partySize: 5,
+  }), (error) => error instanceof GameDatabaseError && error.code === "group_not_ready");
+
+  database.updateOnlineGroupMember(member.id, {
+    id: "member-character", name: "Mendwell", classId: "priest", raceId: "human", gender: "female", level: 20,
+  }, "healer");
+  const playersOnly = database.startOnlineGroupActivity(leader.id, {
+    type: "dungeon", contentId: "wailing-caverns", fillWithAi: false, partySize: 5,
+  });
+  assert.equal(playersOnly.group.activity.partySize, 2);
+  assert.equal(playersOnly.group.activity.fillWithAi, false);
+
+  const filled = database.startOnlineGroupActivity(leader.id, {
+    type: "manastorm", contentId: "manastorm", fillWithAi: true, partySize: 5, startingLevel: 10,
+  });
+  assert.equal(filled.group.activity.partySize, 5);
+  assert.equal(filled.group.activity.startingLevel, 10);
+  assert.throws(() => database.startOnlineGroupActivity(member.id, {
+    type: "dungeon", contentId: "wailing-caverns",
+  }), (error) => error instanceof GameDatabaseError && error.status === 403);
+}));

server/online-session.mjs

@@ -0,0 +1,211 @@
+import { GameDatabaseError } from "./database.mjs";
+
+const PLAYER_TIMEOUT_MS = 15_000;
+const ROOM_TIMEOUT_MS = 30 * 60_000;
+const MAX_EVENTS = 256;
+const MAX_BATCH_EVENTS = 48;
+const ALLOWED_EVENT_KINDS = new Set([
+  "damage",
+  "healing",
+  "resurrection",
+  "loot",
+  "portal",
+]);
+const ALLOWED_SCHOOLS = new Set([
+  "physical",
+  "holy",
+  "fire",
+  "nature",
+  "frost",
+  "shadow",
+  "arcane",
+]);
+
+function finite(value, fallback = 0) {
+  const number = Number(value);
+  return Number.isFinite(number) ? number : fallback;
+}
+
+function boundedString(value, maximum = 160) {
+  return String(value ?? "").slice(0, maximum);
+}
+
+function vector3(value) {
+  if (!Array.isArray(value) || value.length < 3) return [0, 0, 0];
+  return value.slice(0, 3).map((entry) => Math.max(-100_000, Math.min(100_000, finite(entry))));
+}
+
+function jsonClone(value, fallback = null) {
+  try {
+    return JSON.parse(JSON.stringify(value));
+  } catch {
+    return fallback;
+  }
+}
+
+function requireActivity(account, snapshot) {
+  const group = snapshot?.group;
+  const activity = group?.activity;
+  const member = group?.members?.find((candidate) => candidate.accountId === account.id);
+  if (!group || !activity || !member) {
+    throw new GameDatabaseError("The shared activity is no longer active.", 409, "online_activity_required");
+  }
+  return { group, activity, member };
+}
+
+function sanitizePresence(input, member, now) {
+  const maximumHealth = Math.max(1, Math.min(1_000_000_000, Math.round(finite(input?.maxHealth, 1))));
+  const maximumResource = Math.max(0, Math.min(1_000_000_000, Math.round(finite(input?.maxResource))));
+  return {
+    accountId: member.accountId,
+    username: member.username,
+    character: member.character,
+    role: member.role,
+    position: vector3(input?.position),
+    yaw: Math.max(-Math.PI * 8, Math.min(Math.PI * 8, finite(input?.yaw))),
+    grounded: input?.grounded !== false,
+    health: Math.max(0, Math.min(maximumHealth, Math.round(finite(input?.health, maximumHealth)))),
+    maxHealth: maximumHealth,
+    resource: Math.max(0, Math.min(maximumResource, finite(input?.resource))),
+    maxResource: maximumResource,
+    resourceName: boundedString(input?.resourceName, 40),
+    selectedTargetId: input?.selectedTargetId ? boundedString(input.selectedTargetId) : null,
+    activeCast: input?.activeCast && typeof input.activeCast === "object"
+      ? jsonClone(input.activeCast)
+      : null,
+    animationEvent: input?.animationEvent && typeof input.animationEvent === "object"
+      ? jsonClone(input.animationEvent)
+      : null,
+    equipment: Array.isArray(input?.equipment)
+      ? jsonClone(input.equipment.slice(0, 24), [])
+      : [],
+    updatedAt: now,
+  };
+}
+
+function sanitizeEvent(input, accountId, leaderAccountId) {
+  const kind = boundedString(input?.kind, 32);
+  if (!ALLOWED_EVENT_KINDS.has(kind)) return null;
+  const targetActorId = boundedString(input?.targetActorId);
+  if (!targetActorId && kind !== "portal") return null;
+  const sourceActorId = boundedString(input?.sourceActorId);
+  const localPlayerActorId = `online-player:${accountId}`;
+  // Non-leaders may submit only their own player actions. Enemy and AI events
+  // are produced by the activity authority and cannot be forged by members.
+  if (accountId !== leaderAccountId && sourceActorId !== localPlayerActorId) return null;
+  const school = boundedString(input?.school, 24);
+  return {
+    clientEventId: boundedString(input?.clientEventId, 200),
+    kind,
+    sourceActorId: sourceActorId || localPlayerActorId,
+    targetActorId,
+    abilityId: input?.abilityId ? boundedString(input.abilityId) : null,
+    school: ALLOWED_SCHOOLS.has(school) ? school : null,
+    rawAmount: Math.max(0, Math.min(1_000_000_000, finite(input?.rawAmount))),
+    effectiveAmount: Math.max(0, Math.min(1_000_000_000, finite(input?.effectiveAmount))),
+    critical: input?.critical === true,
+    occurredAt: Math.max(0, Math.trunc(finite(input?.occurredAt, Date.now()))),
+  };
+}
+
+export function createOnlineSessionManager() {
+  const rooms = new Map();
+
+  function prune(now) {
+    for (const [activityId, room] of rooms) {
+      if (now - room.updatedAt > ROOM_TIMEOUT_MS) rooms.delete(activityId);
+    }
+  }
+
+  function roomFor(group, activity, now) {
+    prune(now);
+    let room = rooms.get(activity.id);
+    if (!room || room.groupId !== group.id) {
+      room = {
+        activityId: activity.id,
+        groupId: group.id,
+        revision: 0,
+        nextEventId: 1,
+        players: new Map(),
+        events: [],
+        eventKeys: new Set(),
+        world: null,
+        updatedAt: now,
+      };
+      rooms.set(activity.id, room);
+    }
+    return room;
+  }
+
+  function sync(account, groupSnapshot, input = {}) {
+    const now = Date.now();
+    const { group, activity, member } = requireActivity(account, groupSnapshot);
+    const room = roomFor(group, activity, now);
+    const presence = sanitizePresence(input.presence, member, now);
+    room.players.set(account.id, presence);
+    room.revision += 1;
+    room.updatedAt = now;
+
+    if (input.world !== undefined) {
+      if (group.leaderAccountId !== account.id) {
+        throw new GameDatabaseError("Only the activity leader can publish shared world state.", 403, "activity_authority_required");
+      }
+      if (!input.world || typeof input.world !== "object" || Array.isArray(input.world)) {
+        throw new GameDatabaseError("Shared world state must be an object.", 400, "invalid_world_state");
+      }
+      room.world = {
+        ...jsonClone(input.world, {}),
+        publishedAt: now,
+        publishedBy: account.id,
+      };
+      room.revision += 1;
+    }
+
+    const batch = Array.isArray(input.events) ? input.events.slice(0, MAX_BATCH_EVENTS) : [];
+    for (const candidate of batch) {
+      const event = sanitizeEvent(candidate, account.id, group.leaderAccountId);
+      if (!event?.clientEventId) continue;
+      const eventKey = `${account.id}:${event.clientEventId}`;
+      if (room.eventKeys.has(eventKey)) continue;
+      room.eventKeys.add(eventKey);
+      room.events.push({
+        ...event,
+        id: room.nextEventId,
+        sourceAccountId: account.id,
+        createdAt: now,
+      });
+      room.nextEventId += 1;
+      room.revision += 1;
+    }
+    if (room.events.length > MAX_EVENTS) {
+      const removed = room.events.splice(0, room.events.length - MAX_EVENTS);
+      for (const event of removed) room.eventKeys.delete(`${event.sourceAccountId}:${event.clientEventId}`);
+    }
+
+    const memberIds = new Set(group.members.map((candidate) => candidate.accountId));
+    for (const [accountId, player] of room.players) {
+      if (!memberIds.has(accountId) || now - player.updatedAt > PLAYER_TIMEOUT_MS) {
+        room.players.delete(accountId);
+      }
+    }
+    const afterEventId = Math.max(0, Math.trunc(finite(input.afterEventId)));
+    return {
+      activity,
+      groupId: group.id,
+      leaderAccountId: group.leaderAccountId,
+      localAccountId: account.id,
+      authority: group.leaderAccountId === account.id,
+      revision: room.revision,
+      serverTime: now,
+      players: [...room.players.values()].sort((left, right) => left.accountId.localeCompare(right.accountId)),
+      world: room.world,
+      events: room.events.filter((event) => event.id > afterEventId),
+      latestEventId: room.nextEventId - 1,
+    };
+  }
+
+  return {
+    sync,
+    clear: () => rooms.clear(),
+  };
+}

server/online-session.test.mjs

@@ -0,0 +1,114 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { GameDatabaseError } from "./database.mjs";
+import { createOnlineSessionManager } from "./online-session.mjs";
+
+function groupSnapshot() {
+  return {
+    invitations: [],
+    group: {
+      id: "group-one",
+      leaderAccountId: "leader",
+      members: [
+        {
+          accountId: "leader",
+          username: "Leader",
+          character: { id: "lead", name: "Bulwark", classId: "warrior", raceId: "human", gender: "male", level: 20 },
+          role: "tank",
+        },
+        {
+          accountId: "healer",
+          username: "Healer",
+          character: { id: "heal", name: "Mendara", classId: "priest", raceId: "human", gender: "female", level: 20 },
+          role: "healer",
+        },
+      ],
+      activity: {
+        id: "activity-one",
+        type: "dungeon",
+        contentId: "wailing-caverns",
+        fillWithAi: false,
+        partySize: 2,
+        startingLevel: null,
+        startedAt: Date.now(),
+      },
+    },
+  };
+}
+
+const presence = {
+  position: [1, 2, 3],
+  yaw: 0.5,
+  health: 900,
+  maxHealth: 1_000,
+  resource: 400,
+  maxResource: 500,
+  resourceName: "Mana",
+};
+
+test("synchronizes player presence, leader world state, and ordered combat events", () => {
+  const manager = createOnlineSessionManager();
+  const snapshot = groupSnapshot();
+  const leader = manager.sync({ id: "leader" }, snapshot, {
+    presence,
+    world: { mobs: { boss: { health: 500, maxHealth: 500 } }, encounter: { phase: "boss" } },
+  });
+  assert.equal(leader.authority, true);
+  assert.equal(leader.players[0].character.name, "Bulwark");
+  assert.equal(leader.world.mobs.boss.health, 500);
+
+  const healer = manager.sync({ id: "healer" }, snapshot, {
+    presence: { ...presence, position: [4, 5, 6] },
+    afterEventId: 0,
+    events: [{
+      clientEventId: "heal:1",
+      kind: "damage",
+      sourceActorId: "online-player:healer",
+      targetActorId: "boss",
+      school: "holy",
+      rawAmount: 75,
+      effectiveAmount: 60,
+      occurredAt: 123,
+    }],
+  });
+  assert.equal(healer.players.length, 2);
+  assert.equal(healer.events.length, 1);
+  assert.equal(healer.events[0].id, 1);
+  assert.equal(healer.events[0].sourceAccountId, "healer");
+
+  const deduplicated = manager.sync({ id: "healer" }, snapshot, {
+    presence,
+    afterEventId: 1,
+    events: [{
+      clientEventId: "heal:1",
+      kind: "damage",
+      sourceActorId: "online-player:healer",
+      targetActorId: "boss",
+      rawAmount: 75,
+      effectiveAmount: 60,
+    }],
+  });
+  assert.equal(deduplicated.events.length, 0);
+  assert.equal(deduplicated.latestEventId, 1);
+});
+
+test("rejects non-leader world updates and forged enemy events", () => {
+  const manager = createOnlineSessionManager();
+  const snapshot = groupSnapshot();
+  assert.throws(() => manager.sync({ id: "healer" }, snapshot, {
+    presence,
+    world: { mobs: {} },
+  }), (error) => error instanceof GameDatabaseError && error.code === "activity_authority_required");
+
+  const state = manager.sync({ id: "healer" }, snapshot, {
+    presence,
+    events: [{
+      clientEventId: "forged",
+      kind: "damage",
+      sourceActorId: "boss",
+      targetActorId: "online-player:leader",
+      rawAmount: 1_000_000,
+    }],
+  });
+  assert.equal(state.events.length, 0);
+});

server/server.mjs

@@ -3,6 +3,7 @@ import { createServer } from "node:http";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 import { GameDatabaseError, openGameDatabase } from "./database.mjs";
+import { createOnlineSessionManager } from "./online-session.mjs";
 
 const MIME_TYPES = new Map([
   [".css", "text/css; charset=utf-8"], [".glb", "model/gltf-binary"],
@@ -148,6 +149,7 @@ export function createGameServer(options = {}) {
   const bodyLimit = Math.max(1024, Number(options.bodyLimit ?? process.env.MAX_JSON_BODY_BYTES ?? 5 * 1024 * 1024));
   const trustProxy = String(options.trustProxy ?? process.env.TRUST_PROXY ?? "").toLowerCase() === "true";
   const gameDatabase = options.database ?? openGameDatabase(options);
+  const onlineSessions = createOnlineSessionManager();
   const allowAuthRequest = createAuthLimiter();
   gameDatabase.pruneExpiredSessions();
 
@@ -209,6 +211,58 @@ export function createGameServer(options = {}) {
         json(response, 200, gameDatabase.putCloudSave(account.id, body.data));
         return;
       }
+      if (url.pathname === "/api/online-group" && request.method === "GET") {
+        const account = gameDatabase.authenticate(bearerToken(request));
+        json(response, 200, gameDatabase.onlineGroupState(account.id));
+        return;
+      }
+      if (url.pathname === "/api/online-group/invite" && request.method === "POST") {
+        const account = gameDatabase.authenticate(bearerToken(request));
+        const body = await readJson(request, 64 * 1024);
+        json(response, 201, gameDatabase.inviteOnlineGroupMember(account, body.username));
+        return;
+      }
+      if (url.pathname === "/api/online-group/invite/respond" && request.method === "POST") {
+        const account = gameDatabase.authenticate(bearerToken(request));
+        const body = await readJson(request, 64 * 1024);
+        json(response, 200, gameDatabase.respondToOnlineGroupInvite(account.id, body.inviteId, body.accept === true));
+        return;
+      }
+      if (url.pathname === "/api/online-group/leave" && request.method === "POST") {
+        const account = gameDatabase.authenticate(bearerToken(request));
+        json(response, 200, gameDatabase.leaveOnlineGroup(account.id));
+        return;
+      }
+      if (url.pathname === "/api/online-group/remove" && request.method === "POST") {
+        const account = gameDatabase.authenticate(bearerToken(request));
+        const body = await readJson(request, 64 * 1024);
+        json(response, 200, gameDatabase.removeOnlineGroupMember(account.id, body.accountId));
+        return;
+      }
+      if (url.pathname === "/api/online-group/member" && request.method === "PUT") {
+        const account = gameDatabase.authenticate(bearerToken(request));
+        const body = await readJson(request, 64 * 1024);
+        json(response, 200, gameDatabase.updateOnlineGroupMember(account.id, body.character, body.role));
+        return;
+      }
+      if (url.pathname === "/api/online-group/activity" && request.method === "POST") {
+        const account = gameDatabase.authenticate(bearerToken(request));
+        const body = await readJson(request, 64 * 1024);
+        json(response, 200, gameDatabase.startOnlineGroupActivity(account.id, body));
+        return;
+      }
+      if (url.pathname === "/api/online-group/activity/clear" && request.method === "POST") {
+        const account = gameDatabase.authenticate(bearerToken(request));
+        json(response, 200, gameDatabase.clearOnlineGroupActivity(account.id));
+        return;
+      }
+      if (url.pathname === "/api/online-session/sync" && request.method === "POST") {
+        const account = gameDatabase.authenticate(bearerToken(request));
+        const body = await readJson(request, bodyLimit);
+        const groupSnapshot = gameDatabase.onlineGroupState(account.id);
+        json(response, 200, onlineSessions.sync(account, groupSnapshot, body));
+        return;
+      }
       if (url.pathname === "/api/manastorm-config" && request.method === "GET") {
         const current = gameDatabase.getManastormConfig();
         json(response, 200, {
@@ -259,7 +313,10 @@ export function createGameServer(options = {}) {
     }
   });
 
-  server.on("close", () => gameDatabase.close());
+  server.on("close", () => {
+    onlineSessions.clear();
+    gameDatabase.close();
+  });
   return { server, database: gameDatabase, staticDir, contentDir };
 }
 

server/server.test.mjs

@@ -65,6 +65,84 @@ test("serves the game and authenticated cloud-save API", async () => {
     });
     assert.equal(denied.status, 403);
 
+    const memberRegistration = await fetch(`${origin}/api/auth/register`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ username: "WebTank", password: "tanking-pass" }),
+    });
+    const memberAuth = await memberRegistration.json();
+    const invited = await fetch(`${origin}/api/online-group/invite`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json", Authorization: `Bearer ${auth.token}` },
+      body: JSON.stringify({ username: "WebTank" }),
+    });
+    assert.equal(invited.status, 201);
+    const memberGroupState = await (await fetch(`${origin}/api/online-group`, {
+      headers: { Authorization: `Bearer ${memberAuth.token}` },
+    })).json();
+    assert.equal(memberGroupState.invitations.length, 1);
+    const accepted = await fetch(`${origin}/api/online-group/invite/respond`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json", Authorization: `Bearer ${memberAuth.token}` },
+      body: JSON.stringify({ inviteId: memberGroupState.invitations[0].id, accept: true }),
+    });
+    assert.equal(accepted.status, 200);
+    assert.equal((await accepted.json()).group.members.length, 2);
+
+    for (const [token, character, role] of [
+      [auth.token, { id: "web-healer", name: "Mendara", classId: "priest", raceId: "human", gender: "female", level: 20 }, "healer"],
+      [memberAuth.token, { id: "web-tank", name: "Bulwarka", classId: "warrior", raceId: "human", gender: "male", level: 20 }, "tank"],
+    ]) {
+      const ready = await fetch(`${origin}/api/online-group/member`, {
+        method: "PUT",
+        headers: { "Content-Type": "application/json", Authorization: `Bearer ${token}` },
+        body: JSON.stringify({ character, role }),
+      });
+      assert.equal(ready.status, 200);
+    }
+    const activityResponse = await fetch(`${origin}/api/online-group/activity`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json", Authorization: `Bearer ${auth.token}` },
+      body: JSON.stringify({
+        type: "dungeon",
+        contentId: "wailing-caverns",
+        fillWithAi: false,
+        partySize: 2,
+      }),
+    });
+    assert.equal(activityResponse.status, 200);
+    const leaderSync = await fetch(`${origin}/api/online-session/sync`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json", Authorization: `Bearer ${auth.token}` },
+      body: JSON.stringify({
+        afterEventId: 0,
+        presence: { position: [1, 0, 2], health: 900, maxHealth: 1_000 },
+        world: { mobs: { boss: { health: 500 } }, mobTransforms: {} },
+      }),
+    });
+    assert.equal(leaderSync.status, 200);
+    assert.equal((await leaderSync.json()).authority, true);
+    const memberSync = await fetch(`${origin}/api/online-session/sync`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json", Authorization: `Bearer ${memberAuth.token}` },
+      body: JSON.stringify({
+        afterEventId: 0,
+        presence: { position: [3, 0, 4], health: 800, maxHealth: 1_000 },
+        events: [{
+          clientEventId: "web-tank-hit-1",
+          kind: "damage",
+          sourceActorId: `online-player:${memberAuth.account.id}`,
+          targetActorId: "boss",
+          rawAmount: 50,
+          effectiveAmount: 45,
+        }],
+      }),
+    });
+    assert.equal(memberSync.status, 200);
+    const memberSession = await memberSync.json();
+    assert.equal(memberSession.players.length, 2);
+    assert.equal(memberSession.events[0].targetActorId, "boss");
+
     const gmRegistration = await fetch(`${origin}/api/auth/register`, {
       method: "POST",
       headers: { "Content-Type": "application/json" },

src/App.tsx

@@ -3,6 +3,7 @@ import { useShellStore } from "./app/shellStore";
 import { useManastormAdminStore } from "./game/manastormAdminStore";
 import { useAuthoritativeDualScreenSync, useForcedThorDisplays } from "./platform/useThorDualScreen";
 import { LoginScreen } from "./ui/LoginScreen";
+import { OnlineGroupCoordinator } from "./app/OnlineGroupCoordinator";
 
 const GameRuntime = lazy(() => import("./GameRuntime"));
 const CharacterCreateScreen = lazy(() => import("./ui/CharacterCreateScreen").then((module) => ({ default: module.CharacterCreateScreen })));
@@ -28,18 +29,15 @@ export default function App() {
     void refreshManastormConfig();
   }, [refreshManastormConfig, sessionOwnerId]);
 
-  if (phase === "login") return <LoginScreen />;
-  if (phase === "characters") return <Suspense fallback={<ShellTransition />}><CharacterSelectScreen /></Suspense>;
-  if (phase === "create-character") return <Suspense fallback={<ShellTransition />}><CharacterCreateScreen /></Suspense>;
-  if (phase === "main-menu") return <Suspense fallback={<ShellTransition />}><MainMenuScreen /></Suspense>;
-  if (phase === "class-hall") return <Suspense fallback={<ShellTransition />}><ClassHallScreen /></Suspense>;
-  if (phase === "dungeons") return <Suspense fallback={<ShellTransition />}><DungeonSelectScreen /></Suspense>;
-  if (phase === "manastorms") return <Suspense fallback={<ShellTransition />}><ManastormSelectScreen /></Suspense>;
-  if (phase === "gm-admin") return <Suspense fallback={<ShellTransition />}><GmAdminScreen /></Suspense>;
-  if (phase !== "game") return null;
-  return (
-    <Suspense fallback={<ShellTransition />}>
-      <GameRuntime />
-    </Suspense>
-  );
+  let screen = null;
+  if (phase === "login") screen = <LoginScreen />;
+  else if (phase === "characters") screen = <Suspense fallback={<ShellTransition />}><CharacterSelectScreen /></Suspense>;
+  else if (phase === "create-character") screen = <Suspense fallback={<ShellTransition />}><CharacterCreateScreen /></Suspense>;
+  else if (phase === "main-menu") screen = <Suspense fallback={<ShellTransition />}><MainMenuScreen /></Suspense>;
+  else if (phase === "class-hall") screen = <Suspense fallback={<ShellTransition />}><ClassHallScreen /></Suspense>;
+  else if (phase === "dungeons") screen = <Suspense fallback={<ShellTransition />}><DungeonSelectScreen /></Suspense>;
+  else if (phase === "manastorms") screen = <Suspense fallback={<ShellTransition />}><ManastormSelectScreen /></Suspense>;
+  else if (phase === "gm-admin") screen = <Suspense fallback={<ShellTransition />}><GmAdminScreen /></Suspense>;
+  else if (phase === "game") screen = <Suspense fallback={<ShellTransition />}><GameRuntime /></Suspense>;
+  return <><OnlineGroupCoordinator />{screen}</>;
 }

src/GameRuntime.tsx

@@ -20,6 +20,7 @@ import { MapPanel } from "./ui/MapPanel";
 import { PauseMenu } from "./ui/PauseMenu";
 import { SceneErrorBoundary } from "./ui/SceneErrorBoundary";
 import { GmWorldEditor } from "./ui/GmWorldEditor";
+import { OnlineSessionBridge } from "./game/OnlineSessionBridge";
 
 function InputBridge() {
   const overlay = useGameStore((state) => state.overlay);
@@ -51,6 +52,9 @@ function InputBridge() {
       useCombatStore.getState().clearTarget();
       usePartyStore.getState().clearSelection();
     },
+    groundTargetActive: () => useCombatStore.getState().pendingGroundTarget !== null,
+    confirmGroundTarget: () => { useCombatStore.getState().confirmGroundTarget(); },
+    cancelGroundTarget: () => useCombatStore.getState().cancelGroundTarget(),
     gameplayActionsBlocked: () => {
       const game = useGameStore.getState();
       return game.overlay !== null || game.companionOpen;
@@ -81,6 +85,7 @@ export default function GameRuntime() {
       top={
         <main className="game-shell">
           <InputBridge />
+          <OnlineSessionBridge />
           <CombatBridge />
           <PartyBridge />
           <ManastormBridge />

src/app/OnlineGroupCoordinator.tsx

@@ -0,0 +1,85 @@
+import { useEffect } from "react";
+import { selectedCharacter, useShellStore } from "./shellStore";
+import { useOnlineGroupStore } from "./onlineGroupStore";
+import {
+  classCanFillPartyRole,
+  defaultPartyRoleForClass,
+  type PartyRole,
+} from "../game/partyRoles";
+import { isManastormPartySize } from "../game/manastormProgress";
+
+const GROUP_POLL_MS = 2_500;
+const ACTIVITY_JOIN_WINDOW_MS = 10 * 60 * 1000;
+
+export function OnlineGroupCoordinator() {
+  const session = useShellStore((state) => state.session);
+  const character = useShellStore(selectedCharacter);
+  const phase = useShellStore((state) => state.phase);
+  const snapshot = useOnlineGroupStore((state) => state.snapshot);
+  const consumedActivityIds = useOnlineGroupStore((state) => state.consumedActivityIds);
+  const refresh = useOnlineGroupStore((state) => state.refresh);
+  const updateMember = useOnlineGroupStore((state) => state.updateMember);
+  const consumeActivity = useOnlineGroupStore((state) => state.consumeActivity);
+  const reset = useOnlineGroupStore((state) => state.reset);
+
+  useEffect(() => {
+    if (!session || session.kind !== "account" || !session.accessToken) {
+      reset();
+      return undefined;
+    }
+    void refresh(session);
+    const timer = window.setInterval(() => void refresh(session, true), GROUP_POLL_MS);
+    const onVisibility = () => {
+      if (document.visibilityState === "visible") void refresh(session, true);
+    };
+    document.addEventListener("visibilitychange", onVisibility);
+    return () => {
+      window.clearInterval(timer);
+      document.removeEventListener("visibilitychange", onVisibility);
+    };
+  }, [refresh, reset, session?.accessToken, session?.ownerId]);
+
+  useEffect(() => {
+    const group = snapshot.group;
+    if (!session || !character || !group || group.activity) return;
+    const member = group.members.find((candidate) => candidate.accountId === session.ownerId);
+    if (!member) return;
+    const role: PartyRole = member.role && classCanFillPartyRole(character.classId, member.role)
+      ? member.role
+      : defaultPartyRoleForClass(character.classId);
+    const characterChanged = member.character?.id !== character.id
+      || member.character?.level !== character.level
+      || member.character?.classId !== character.classId;
+    if (!characterChanged && member.role === role) return;
+    void updateMember(session, character, role);
+  }, [character?.classId, character?.id, character?.level, session?.ownerId, snapshot.group?.id, snapshot.group?.updatedAt, updateMember]);
+
+  useEffect(() => {
+    const activity = snapshot.group?.activity;
+    if (!session || !activity || phase === "game" || consumedActivityIds.includes(activity.id)) return;
+    if (Date.now() - activity.startedAt > ACTIVITY_JOIN_WINDOW_MS) return;
+    const member = snapshot.group?.members.find((candidate) => candidate.accountId === session.ownerId);
+    if (!member?.character || !member.role) return;
+    consumeActivity(activity.id);
+    void (async () => {
+      if (activity.type === "dungeon") {
+        const { installDungeonShellRuntime } = await import("./dungeonShellRuntime");
+        installDungeonShellRuntime();
+        useShellStore.getState().enterDungeon(activity.contentId, member.role ?? undefined);
+        return;
+      }
+      const { installManastormShellRuntime } = await import("./manastormShellRuntime");
+      installManastormShellRuntime();
+      const partySize = isManastormPartySize(activity.partySize) ? activity.partySize : 5;
+      useShellStore.getState().enterManastorm(
+        member.role ?? undefined,
+        partySize,
+        activity.startingLevel ?? undefined,
+      );
+    })().catch((error) => {
+      useShellStore.getState().setNotice(error instanceof Error ? error.message : "The group activity could not be opened.");
+    });
+  }, [consumeActivity, consumedActivityIds, phase, session?.ownerId, snapshot.group?.activity?.id]);
+
+  return null;
+}

src/app/onlineAccountClient.ts

@@ -6,6 +6,8 @@ import {
   type AccountResult,
 } from "./accountRepository";
 import type { CharacterProfile, PlayerSession } from "./types";
+import type { OnlineGroupSnapshot, StartOnlineGroupActivityInput } from "./onlineGroupTypes";
+import type { OnlineSessionSnapshot, OnlineSessionSyncInput } from "./onlineSessionTypes";
 
 const NATIVE_API_ORIGIN = "https://iwanttoheal.phenomrom.com";
 const SAVE_DEBOUNCE_MS = 500;
@@ -159,3 +161,77 @@ export async function logoutOnlineSession(session: PlayerSession | null): Promis
   }
   if (activeSession?.ownerId === session?.ownerId) activeSession = null;
 }
+
+function onlineGroupRequest<T>(session: PlayerSession, pathname: string, init: RequestInit = {}): Promise<T> {
+  if (!session.accessToken) throw new OnlineApiError("Online grouping requires a signed-in account.", 401);
+  return requestOnlineJson<T>(pathname, init, session.accessToken);
+}
+
+export function fetchOnlineGroup(session: PlayerSession): Promise<OnlineGroupSnapshot> {
+  return onlineGroupRequest(session, "/api/online-group");
+}
+
+export async function inviteOnlineGroupPlayer(session: PlayerSession, username: string): Promise<OnlineGroupSnapshot> {
+  const response = await onlineGroupRequest<{ state: OnlineGroupSnapshot }>(session, "/api/online-group/invite", {
+    method: "POST",
+    body: JSON.stringify({ username }),
+  });
+  return response.state;
+}
+
+export function respondToOnlineGroupInvite(
+  session: PlayerSession,
+  inviteId: string,
+  accept: boolean,
+): Promise<OnlineGroupSnapshot> {
+  return onlineGroupRequest(session, "/api/online-group/invite/respond", {
+    method: "POST",
+    body: JSON.stringify({ inviteId, accept }),
+  });
+}
+
+export function leaveOnlineGroup(session: PlayerSession): Promise<OnlineGroupSnapshot> {
+  return onlineGroupRequest(session, "/api/online-group/leave", { method: "POST" });
+}
+
+export function removeOnlineGroupPlayer(session: PlayerSession, accountId: string): Promise<OnlineGroupSnapshot> {
+  return onlineGroupRequest(session, "/api/online-group/remove", {
+    method: "POST",
+    body: JSON.stringify({ accountId }),
+  });
+}
+
+export function updateOnlineGroupMember(
+  session: PlayerSession,
+  character: CharacterProfile,
+  role: string,
+): Promise<OnlineGroupSnapshot> {
+  return onlineGroupRequest(session, "/api/online-group/member", {
+    method: "PUT",
+    body: JSON.stringify({ character, role }),
+  });
+}
+
+export function startOnlineGroupActivity(
+  session: PlayerSession,
+  activity: StartOnlineGroupActivityInput,
+): Promise<OnlineGroupSnapshot> {
+  return onlineGroupRequest(session, "/api/online-group/activity", {
+    method: "POST",
+    body: JSON.stringify(activity),
+  });
+}
+
+export function clearOnlineGroupActivity(session: PlayerSession): Promise<OnlineGroupSnapshot> {
+  return onlineGroupRequest(session, "/api/online-group/activity/clear", { method: "POST" });
+}
+
+export function synchronizeOnlineSession(
+  session: PlayerSession,
+  input: OnlineSessionSyncInput,
+): Promise<OnlineSessionSnapshot> {
+  return onlineGroupRequest(session, "/api/online-session/sync", {
+    method: "POST",
+    body: JSON.stringify(input),
+  });
+}

src/app/onlineGroupStore.test.ts

@@ -0,0 +1,35 @@
+import { beforeEach, describe, expect, it } from "vitest";
+import { onlineGroupAiPartySize, useOnlineGroupStore } from "./onlineGroupStore";
+
+describe("online group AI fill sizing", () => {
+  beforeEach(() => useOnlineGroupStore.getState().reset());
+
+  it("reserves one simulated slot for every grouped human other than the local player", () => {
+    useOnlineGroupStore.setState({
+      snapshot: {
+        invitations: [],
+        group: {
+          id: "group-test",
+          leaderAccountId: "one",
+          activity: null,
+          activityRevision: 0,
+          createdAt: 1,
+          updatedAt: 1,
+          members: [
+            { accountId: "one", username: "One", character: null, role: null, joinedAt: 1 },
+            { accountId: "two", username: "Two", character: null, role: null, joinedAt: 2 },
+            { accountId: "three", username: "Three", character: null, role: null, joinedAt: 3 },
+          ],
+        },
+      },
+    });
+
+    expect(onlineGroupAiPartySize(5)).toBe(3);
+    expect(onlineGroupAiPartySize(3)).toBe(1);
+  });
+
+  it("keeps ordinary solo activity sizes unchanged", () => {
+    expect(onlineGroupAiPartySize(5)).toBe(5);
+    expect(onlineGroupAiPartySize(1)).toBe(1);
+  });
+});

src/app/onlineGroupStore.ts

@@ -0,0 +1,177 @@
+import { create } from "zustand";
+import type { CharacterProfile, PlayerSession } from "./types";
+import type { PartyRole } from "../game/partyRoles";
+import type { PartySize } from "../game/partyRoles";
+import {
+  clearOnlineGroupActivity,
+  fetchOnlineGroup,
+  inviteOnlineGroupPlayer,
+  leaveOnlineGroup,
+  removeOnlineGroupPlayer,
+  respondToOnlineGroupInvite,
+  startOnlineGroupActivity,
+  updateOnlineGroupMember,
+} from "./onlineAccountClient";
+import type { OnlineGroupActivity, OnlineGroupSnapshot, StartOnlineGroupActivityInput } from "./onlineGroupTypes";
+
+const EMPTY_SNAPSHOT: OnlineGroupSnapshot = Object.freeze({ group: null, invitations: Object.freeze([]) });
+
+interface OnlineGroupState {
+  snapshot: OnlineGroupSnapshot;
+  loading: boolean;
+  busy: boolean;
+  error: string;
+  fillWithAi: boolean;
+  activeActivity: OnlineGroupActivity | null;
+  consumedActivityIds: readonly string[];
+  refresh: (session: PlayerSession, silent?: boolean) => Promise<void>;
+  invite: (session: PlayerSession, username: string) => Promise<boolean>;
+  respond: (session: PlayerSession, inviteId: string, accept: boolean) => Promise<boolean>;
+  leave: (session: PlayerSession) => Promise<boolean>;
+  remove: (session: PlayerSession, accountId: string) => Promise<boolean>;
+  updateMember: (session: PlayerSession, character: CharacterProfile, role: PartyRole) => Promise<boolean>;
+  startActivity: (session: PlayerSession, input: Omit<StartOnlineGroupActivityInput, "fillWithAi">) => Promise<boolean>;
+  clearActivity: (session: PlayerSession) => Promise<boolean>;
+  setFillWithAi: (fillWithAi: boolean) => void;
+  consumeActivity: (activityId: string) => void;
+  reset: () => void;
+}
+
+function messageFor(error: unknown): string {
+  return error instanceof Error ? error.message : "The online group could not be updated.";
+}
+
+export const useOnlineGroupStore = create<OnlineGroupState>((set, get) => ({
+  snapshot: EMPTY_SNAPSHOT,
+  loading: false,
+  busy: false,
+  error: "",
+  fillWithAi: true,
+  activeActivity: null,
+  consumedActivityIds: [],
+
+  refresh: async (session, silent = false) => {
+    if (session.kind !== "account" || !session.accessToken) {
+      set({ snapshot: EMPTY_SNAPSHOT, loading: false, busy: false, error: "" });
+      return;
+    }
+    if (!silent) set({ loading: true });
+    try {
+      const snapshot = await fetchOnlineGroup(session);
+      set({ snapshot, loading: false, error: "" });
+    } catch (error) {
+      set({ loading: false, error: messageFor(error) });
+    }
+  },
+
+  invite: async (session, username) => {
+    set({ busy: true, error: "" });
+    try {
+      const snapshot = await inviteOnlineGroupPlayer(session, username);
+      set({ snapshot, busy: false, activeActivity: null });
+      return true;
+    } catch (error) {
+      set({ busy: false, error: messageFor(error) });
+      return false;
+    }
+  },
+
+  respond: async (session, inviteId, accept) => {
+    set({ busy: true, error: "" });
+    try {
+      const snapshot = await respondToOnlineGroupInvite(session, inviteId, accept);
+      set({ snapshot, busy: false, activeActivity: null });
+      return true;
+    } catch (error) {
+      set({ busy: false, error: messageFor(error) });
+      return false;
+    }
+  },
+
+  leave: async (session) => {
+    set({ busy: true, error: "" });
+    try {
+      const snapshot = await leaveOnlineGroup(session);
+      set({ snapshot, busy: false, activeActivity: null });
+      return true;
+    } catch (error) {
+      set({ busy: false, error: messageFor(error) });
+      return false;
+    }
+  },
+
+  remove: async (session, accountId) => {
+    set({ busy: true, error: "" });
+    try {
+      const snapshot = await removeOnlineGroupPlayer(session, accountId);
+      set({ snapshot, busy: false, activeActivity: null });
+      return true;
+    } catch (error) {
+      set({ busy: false, error: messageFor(error) });
+      return false;
+    }
+  },
+
+  updateMember: async (session, character, role) => {
+    set({ busy: true, error: "" });
+    try {
+      const snapshot = await updateOnlineGroupMember(session, character, role);
+      set({ snapshot, busy: false, activeActivity: null });
+      return true;
+    } catch (error) {
+      set({ busy: false, error: messageFor(error) });
+      return false;
+    }
+  },
+
+  startActivity: async (session, input) => {
+    set({ busy: true, error: "" });
+    try {
+      const snapshot = await startOnlineGroupActivity(session, { ...input, fillWithAi: get().fillWithAi });
+      set({ snapshot, busy: false });
+      return true;
+    } catch (error) {
+      set({ busy: false, error: messageFor(error) });
+      return false;
+    }
+  },
+
+  clearActivity: async (session) => {
+    set({ busy: true, error: "" });
+    try {
+      const snapshot = await clearOnlineGroupActivity(session);
+      set({ snapshot, busy: false, activeActivity: null });
+      return true;
+    } catch (error) {
+      set({ busy: false, error: messageFor(error) });
+      return false;
+    }
+  },
+
+  setFillWithAi: (fillWithAi) => set({ fillWithAi }),
+  consumeActivity: (activityId) => set((state) => {
+    if (state.consumedActivityIds.includes(activityId)) return state;
+    return {
+      activeActivity: state.snapshot.group?.activity?.id === activityId
+        ? state.snapshot.group.activity
+        : state.activeActivity,
+      consumedActivityIds: [...state.consumedActivityIds.slice(-7), activityId],
+    };
+  }),
+  reset: () => set({
+    snapshot: EMPTY_SNAPSHOT,
+    loading: false,
+    busy: false,
+    error: "",
+    activeActivity: null,
+    consumedActivityIds: [],
+  }),
+}));
+
+export function onlineGroupHumanCount(): number {
+  return useOnlineGroupStore.getState().snapshot.group?.members.length ?? 1;
+}
+
+export function onlineGroupAiPartySize(activityPartySize: number): PartySize {
+  return Math.max(1, Math.min(5, activityPartySize - Math.max(0, onlineGroupHumanCount() - 1))) as PartySize;
+}

src/app/onlineGroupTypes.ts

@@ -0,0 +1,63 @@
+import type { PartyRole } from "../game/partyRoles";
+import type { CharacterAppearance } from "./characterCatalog";
+
+export interface OnlineGroupCharacter {
+  readonly id: string;
+  readonly name: string;
+  readonly classId: string;
+  readonly categoryId: string;
+  readonly raceId: string;
+  readonly gender: "female" | "male";
+  readonly level: number;
+  readonly appearance?: CharacterAppearance;
+}
+
+export interface OnlineGroupMember {
+  readonly accountId: string;
+  readonly username: string;
+  readonly character: OnlineGroupCharacter | null;
+  readonly role: PartyRole | null;
+  readonly joinedAt: number;
+}
+
+export interface OnlineGroupActivity {
+  readonly id: string;
+  readonly type: "dungeon" | "manastorm";
+  readonly contentId: string;
+  readonly fillWithAi: boolean;
+  readonly partySize: number;
+  readonly startingLevel: number | null;
+  readonly startedAt: number;
+}
+
+export interface OnlineGroup {
+  readonly id: string;
+  readonly leaderAccountId: string;
+  readonly members: readonly OnlineGroupMember[];
+  readonly activity: OnlineGroupActivity | null;
+  readonly activityRevision: number;
+  readonly createdAt: number;
+  readonly updatedAt: number;
+}
+
+export interface OnlineGroupInvitation {
+  readonly id: string;
+  readonly groupId: string;
+  readonly inviterAccountId: string;
+  readonly inviterUsername: string;
+  readonly createdAt: number;
+  readonly expiresAt: number;
+}
+
+export interface OnlineGroupSnapshot {
+  readonly group: OnlineGroup | null;
+  readonly invitations: readonly OnlineGroupInvitation[];
+}
+
+export interface StartOnlineGroupActivityInput {
+  readonly type: OnlineGroupActivity["type"];
+  readonly contentId: string;
+  readonly fillWithAi: boolean;
+  readonly partySize: number;
+  readonly startingLevel?: number;
+}

src/app/onlineSessionStore.ts

@@ -0,0 +1,24 @@
+import { create } from "zustand";
+import type { OnlineSessionSnapshot } from "./onlineSessionTypes";
+
+interface OnlineSessionState {
+  snapshot: OnlineSessionSnapshot | null;
+  connected: boolean;
+  synchronizing: boolean;
+  error: string;
+  setSynchronizing: (synchronizing: boolean) => void;
+  accept: (snapshot: OnlineSessionSnapshot) => void;
+  fail: (message: string) => void;
+  reset: () => void;
+}
+
+export const useOnlineSessionStore = create<OnlineSessionState>((set) => ({
+  snapshot: null,
+  connected: false,
+  synchronizing: false,
+  error: "",
+  setSynchronizing: (synchronizing) => set({ synchronizing }),
+  accept: (snapshot) => set({ snapshot, connected: true, synchronizing: false, error: "" }),
+  fail: (error) => set({ connected: false, synchronizing: false, error }),
+  reset: () => set({ snapshot: null, connected: false, synchronizing: false, error: "" }),
+}));

src/app/onlineSessionTypes.ts

@@ -0,0 +1,108 @@
+import type { CharacterCombatAnimationEvent } from "../game/combatAnimation";
+import type { ActiveCast, MobCombatState } from "../game/combatStore";
+import type { DamageSchool } from "../game/combatAuras";
+import type { InventoryItem } from "../game/lootTypes";
+import type { PartyMember } from "../game/partyStore";
+import type { OnlineGroupActivity, OnlineGroupCharacter } from "./onlineGroupTypes";
+import type { PartyRole } from "../game/partyRoles";
+
+export type OnlineSessionVector = readonly [number, number, number];
+
+export interface OnlineSessionPlayer {
+  readonly accountId: string;
+  readonly username: string;
+  readonly character: OnlineGroupCharacter | null;
+  readonly role: PartyRole | null;
+  readonly position: OnlineSessionVector;
+  readonly yaw: number;
+  readonly grounded: boolean;
+  readonly health: number;
+  readonly maxHealth: number;
+  readonly resource: number;
+  readonly maxResource: number;
+  readonly resourceName: string;
+  readonly selectedTargetId: string | null;
+  readonly activeCast: ActiveCast | null;
+  readonly animationEvent: CharacterCombatAnimationEvent | null;
+  readonly equipment: readonly InventoryItem[];
+  readonly updatedAt: number;
+}
+
+export interface OnlineMobTransform {
+  readonly position: OnlineSessionVector;
+  readonly yaw: number;
+}
+
+export interface OnlineSharedWorld {
+  readonly mobs: Readonly<Record<string, MobCombatState>>;
+  readonly mobTransforms: Readonly<Record<string, OnlineMobTransform>>;
+  readonly partyMembers: readonly PartyMember[];
+  readonly partyPositions: Readonly<Record<string, OnlineSessionVector>>;
+  readonly partyRuntime: {
+    readonly command: string;
+    readonly activeMobId: string | null;
+    readonly objectiveBossId: string | null;
+    readonly memberTargetIds: Readonly<Record<string, string>>;
+  };
+  readonly wailing: Readonly<Record<string, unknown>> | null;
+  readonly manastorm: Readonly<Record<string, unknown>> | null;
+  readonly publishedAt?: number;
+  readonly publishedBy?: string;
+}
+
+export type OnlineRelayEventKind = "damage" | "healing" | "resurrection" | "loot" | "portal";
+
+export interface OnlineRelayEventInput {
+  readonly clientEventId: string;
+  readonly kind: OnlineRelayEventKind;
+  readonly sourceActorId: string;
+  readonly targetActorId: string;
+  readonly abilityId?: string | null;
+  readonly school?: DamageSchool | null;
+  readonly rawAmount?: number;
+  readonly effectiveAmount?: number;
+  readonly critical?: boolean;
+  readonly occurredAt?: number;
+}
+
+export interface OnlineRelayEvent extends OnlineRelayEventInput {
+  readonly id: number;
+  readonly sourceAccountId: string;
+  readonly createdAt: number;
+}
+
+export interface OnlineSessionSnapshot {
+  readonly activity: OnlineGroupActivity;
+  readonly groupId: string;
+  readonly leaderAccountId: string;
+  readonly localAccountId: string;
+  readonly authority: boolean;
+  readonly revision: number;
+  readonly serverTime: number;
+  readonly players: readonly OnlineSessionPlayer[];
+  readonly world: OnlineSharedWorld | null;
+  readonly events: readonly OnlineRelayEvent[];
+  readonly latestEventId: number;
+}
+
+export interface OnlinePresenceInput {
+  readonly position: OnlineSessionVector;
+  readonly yaw: number;
+  readonly grounded: boolean;
+  readonly health: number;
+  readonly maxHealth: number;
+  readonly resource: number;
+  readonly maxResource: number;
+  readonly resourceName: string;
+  readonly selectedTargetId: string | null;
+  readonly activeCast: ActiveCast | null;
+  readonly animationEvent: CharacterCombatAnimationEvent | null;
+  readonly equipment: readonly InventoryItem[];
+}
+
+export interface OnlineSessionSyncInput {
+  readonly afterEventId: number;
+  readonly presence: OnlinePresenceInput;
+  readonly world?: OnlineSharedWorld;
+  readonly events?: readonly OnlineRelayEventInput[];
+}

src/game/CombatBridge.tsx

@@ -6,6 +6,10 @@ import { useGameStore } from "./store";
 import { activateManastormActiveSpellLoadout } from "./manastormSpellLoadout";
 import { useManastormStore } from "./manastormStore";
 import { useWailingEncounterStore } from "./wailingCavernsEncounter";
+import {
+  onlineSessionIsActive,
+  onlineSessionOwnsWorldSimulation,
+} from "./onlineSessionRuntime";
 
 /**
  * Connects the pure combat runtime to the active character and persistent
@@ -21,6 +25,7 @@ export function CombatBridge() {
   useEffect(() => {
     if (!character) return;
     useCombatStore.getState().initializeCharacter(character);
+    useCombatStore.getState().synchronizeActors();
     if (gameMode === "manastorm") {
       activateManastormActiveSpellLoadout(
         useManastormStore.getState().activeSpellLoadout,
@@ -108,17 +113,25 @@ export function CombatBridge() {
       const delta = Math.min(0.25, Math.max(0, (now - previous) / 1_000));
       previous = now;
       const game = useGameStore.getState();
-      if (!game.paused && !game.companionOpen) {
+      const sharedOnline = onlineSessionIsActive();
+      if ((!game.paused || sharedOnline) && (!game.companionOpen || sharedOnline)) {
         const epochNow = Date.now();
         const combat = useCombatStore.getState();
         combat.setPlayerPosition(game.playerPosition);
         combat.tick(delta, epochNow);
-        if (game.gameMode === "dungeon") {
+        if (onlineSessionOwnsWorldSimulation() && game.gameMode === "dungeon") {
           useCombatStore.getState().engageNearbyMobs(epochNow, game.playerPosition);
         }
+        if (onlineSessionOwnsWorldSimulation()) {
           useCombatStore.getState().advanceMobCombat(epochNow, game.playerPosition);
           advanceDungeonPartyCombat(epochNow);
-        if (game.gameMode === "dungeon" && game.activeDungeonId === "wailing-caverns") {
+        }
+        useCombatStore.getState().synchronizeActors();
+        if (
+          onlineSessionOwnsWorldSimulation()
+          && game.gameMode === "dungeon"
+          && game.activeDungeonId === "wailing-caverns"
+        ) {
           useWailingEncounterStore.getState().advance(
             useCombatStore.getState().mobs,
             epochNow,

src/game/ManastormBridge.tsx

@@ -14,6 +14,7 @@ import { getManastormCatalog, manastormEncounterById } from "./manastorm";
 import { synchronizeManastormProgress } from "./manastormProgressSync";
 import { synchronizeManastormAffixes } from "./manastormAffixRuntime";
 import { preloadManastormStage } from "./manastormStageLoader";
+import { onlineSessionIsActive, onlineSessionOwnsWorldSimulation } from "./onlineSessionRuntime";
 
 /** Connects staged combat, party sizing, and shared resurrections to Manastorm state. */
 export function ManastormBridge() {
@@ -30,11 +31,12 @@ export function ManastormBridge() {
 
   useEffect(() => {
     if (gameMode !== "manastorm") return;
+    if (!onlineSessionOwnsWorldSimulation()) return;
     synchronizeManastormPartySize();
   }, [gameMode, partyMemberCount, partySize]);
 
   useEffect(() => {
-    if (gameMode !== "manastorm" || status !== "entering" || !encounter) return;
+    if (gameMode !== "manastorm" || status !== "entering" || !encounter || !onlineSessionOwnsWorldSimulation()) return;
     useManastormStore.getState().enterStage();
   }, [encounter, gameMode, status]);
 
@@ -42,12 +44,14 @@ export function ManastormBridge() {
     if (
       gameMode !== "manastorm"
       || !encounter
+      || !onlineSessionOwnsWorldSimulation()
     ) return;
     synchronizeManastormCombat();
   }, [encounter, gameMode, mobs, status]);
 
   useEffect(() => {
     if (gameMode !== "manastorm") return;
+    if (!onlineSessionOwnsWorldSimulation()) return;
     const timer = window.setInterval(() => synchronizeManastormAffixes(Date.now()), 250);
     return () => window.clearInterval(timer);
   }, [gameMode]);
@@ -71,6 +75,7 @@ export function ManastormBridge() {
       || previous.health <= 0
       || useGameStore.getState().gameMode !== "manastorm"
       || resolvingDefeatRef.current
+      || onlineSessionIsActive()
     ) return;
     resolvingDefeatRef.current = true;
     try {
@@ -82,7 +87,11 @@ export function ManastormBridge() {
   }), []);
 
   useEffect(() => usePartyStore.subscribe((state, previous) => {
-    if (useGameStore.getState().gameMode !== "manastorm" || resolvingDefeatRef.current) return;
+    if (
+      useGameStore.getState().gameMode !== "manastorm"
+      || resolvingDefeatRef.current
+      || !onlineSessionOwnsWorldSimulation()
+    ) return;
     const previousById = new Map(previous.members.map((member) => [member.id, member]));
     const downedMemberIds = state.members.filter((member) => (
       member.health <= 0 && (previousById.get(member.id)?.health ?? 0) > 0

src/game/OnlineSessionBridge.tsx

@@ -0,0 +1,319 @@
+import { useEffect, useRef } from "react";
+import { synchronizeOnlineSession } from "../app/onlineAccountClient";
+import { useOnlineGroupStore } from "../app/onlineGroupStore";
+import { useOnlineSessionStore } from "../app/onlineSessionStore";
+import type {
+  OnlineRelayEvent,
+  OnlineRelayEventInput,
+  OnlineSessionSnapshot,
+  OnlineSharedWorld,
+} from "../app/onlineSessionTypes";
+import { useShellStore } from "../app/shellStore";
+import { PLAYER_AGGRO_ID } from "./aggro";
+import { useCombatStore } from "./combatStore";
+import { equipmentItemsForOwner, PLAYER_EQUIPMENT_OWNER_ID } from "./equipment";
+import { getMobRuntimeTransform } from "./mobRuntimeRegistry";
+import {
+  configureOnlineSessionRuntime,
+  drainOnlineInteractions,
+  isOnlinePlayerActorId,
+  onlineAccountIdFromActor,
+  onlinePlayerActorId,
+} from "./onlineSessionRuntime";
+import {
+  getPartyRuntimePosition,
+  removePartyRuntimePosition,
+  updatePartyRuntimePosition,
+} from "./partyRuntimeRegistry";
+import { usePartyStore } from "./partyStore";
+import { useGameStore } from "./store";
+import { useManastormStore } from "./manastormStore";
+import { advanceManastormSession } from "./manastormSession";
+import { useWailingEncounterStore } from "./wailingCavernsEncounter";
+
+const SYNC_INTERVAL_MS = 100;
+const WORLD_INTERVAL_MS = 200;
+
+function serializableState<T extends object>(state: T): Readonly<Record<string, unknown>> {
+  return JSON.parse(JSON.stringify(state)) as Readonly<Record<string, unknown>>;
+}
+
+function sharedWorld(): OnlineSharedWorld {
+  const combat = useCombatStore.getState();
+  const party = usePartyStore.getState();
+  const game = useGameStore.getState();
+  const mobTransforms = Object.fromEntries(
+    Object.keys(combat.mobs).flatMap((id) => {
+      const transform = getMobRuntimeTransform(id);
+      return transform ? [[id, transform]] : [];
+    }),
+  );
+  const partyPositions = Object.fromEntries(
+    party.members.flatMap((member) => {
+      const position = getPartyRuntimePosition(member.id);
+      return position ? [[member.id, position]] : [];
+    }),
+  );
+  return {
+    mobs: combat.mobs,
+    mobTransforms,
+    partyMembers: party.members,
+    partyPositions,
+    partyRuntime: {
+      command: party.command,
+      activeMobId: party.activeMobId,
+      objectiveBossId: party.objectiveBossId,
+      memberTargetIds: party.memberTargetIds,
+    },
+    wailing: game.gameMode === "dungeon"
+      ? serializableState(useWailingEncounterStore.getState())
+      : null,
+    manastorm: game.gameMode === "manastorm"
+      ? serializableState(useManastormStore.getState())
+      : null,
+  };
+}
+
+function applySharedWorld(world: OnlineSharedWorld): void {
+  useCombatStore.setState({ mobs: world.mobs });
+  usePartyStore.setState({
+    members: world.partyMembers,
+    command: world.partyRuntime.command as ReturnType<typeof usePartyStore.getState>["command"],
+    activeMobId: world.partyRuntime.activeMobId,
+    objectiveBossId: world.partyRuntime.objectiveBossId,
+    memberTargetIds: world.partyRuntime.memberTargetIds,
+  });
+  for (const [id, position] of Object.entries(world.partyPositions)) {
+    updatePartyRuntimePosition(id, position[0], position[1], position[2]);
+  }
+  if (world.wailing) useWailingEncounterStore.setState(world.wailing as never);
+  if (world.manastorm) useManastormStore.setState(world.manastorm as never);
+}
+
+function eventForRelay(
+  event: ReturnType<typeof useCombatStore.getState>["combatEvents"][number],
+  localAccountId: string,
+  authority: boolean,
+): OnlineRelayEventInput | null {
+  if (!["damage", "healing", "resurrection"].includes(event.kind)) return null;
+  const combat = useCombatStore.getState();
+  const playerOwnedSummon = combat.summons.some((summon) => (
+    summon.id === event.sourceActorId && summon.ownerActorId === PLAYER_AGGRO_ID
+  ));
+  const sourceIsLocal = event.sourceActorId === PLAYER_AGGRO_ID || playerOwnedSummon;
+  const targetsRemotePlayer = isOnlinePlayerActorId(event.targetActorId);
+  if (!sourceIsLocal && !(authority && targetsRemotePlayer)) return null;
+  const localActorId = onlinePlayerActorId(localAccountId);
+  const targetActorId = event.targetActorId === PLAYER_AGGRO_ID
+    ? localActorId
+    : event.targetActorId;
+  if (sourceIsLocal && targetActorId === localActorId) return null;
+  return {
+    clientEventId: `combat:${localAccountId}:${event.occurredAt}:${event.id}:${event.kind}`,
+    kind: event.kind as "damage" | "healing" | "resurrection",
+    sourceActorId: sourceIsLocal ? localActorId : event.sourceActorId,
+    targetActorId,
+    abilityId: event.abilityId,
+    school: event.school,
+    rawAmount: event.rawAmount,
+    effectiveAmount: event.effectiveAmount,
+    critical: event.critical,
+    occurredAt: event.occurredAt,
+  };
+}
+
+function applyRelayEvent(
+  event: OnlineRelayEvent,
+  snapshot: OnlineSessionSnapshot,
+  applyingRef: React.MutableRefObject<boolean>,
+): void {
+  if (event.sourceAccountId === snapshot.localAccountId) return;
+  const localActorId = onlinePlayerActorId(snapshot.localAccountId);
+  applyingRef.current = true;
+  try {
+    if (event.kind === "portal" && snapshot.authority) {
+      advanceManastormSession();
+      return;
+    }
+    if (event.kind === "loot" && snapshot.authority && event.targetActorId) {
+      useCombatStore.getState().lootMob(event.targetActorId, event.occurredAt || Date.now());
+      return;
+    }
+    if (event.targetActorId === localActorId) {
+      if (event.kind === "damage") {
+        const sourceLevel = useCombatStore.getState().mobs[event.sourceActorId]?.level;
+        useCombatStore.getState().damagePlayer(
+          event.rawAmount ?? event.effectiveAmount ?? 0,
+          event.school ?? "physical",
+          sourceLevel,
+        );
+      } else if (event.kind === "healing") {
+        useCombatStore.getState().healActor(PLAYER_AGGRO_ID, event.effectiveAmount ?? 0, {
+          sourceActorId: event.sourceActorId,
+          abilityId: event.abilityId ?? undefined,
+          school: event.school ?? undefined,
+          now: event.occurredAt,
+          amountAlreadyModified: true,
+        });
+      } else if (event.kind === "resurrection") {
+        const combat = useCombatStore.getState();
+        combat.revivePlayer((event.effectiveAmount ?? 1) / Math.max(1, combat.maxHealth));
+      }
+      return;
+    }
+    if (!snapshot.authority) return;
+    const partyMember = usePartyStore.getState().members.find((member) => member.id === event.targetActorId);
+    if (partyMember) {
+      if (event.kind === "healing") {
+        useCombatStore.getState().healActor(event.targetActorId, event.effectiveAmount ?? 0, {
+          sourceActorId: event.sourceActorId,
+          abilityId: event.abilityId ?? undefined,
+          school: event.school ?? undefined,
+          now: event.occurredAt,
+          amountAlreadyModified: true,
+        });
+      } else if (event.kind === "resurrection") {
+        useCombatStore.getState().reviveActor(
+          event.targetActorId,
+          (event.effectiveAmount ?? 1) / Math.max(1, partyMember.maxHealth),
+          event.sourceActorId,
+          event.abilityId ?? undefined,
+          event.occurredAt,
+        );
+      }
+      return;
+    }
+    const mob = useCombatStore.getState().mobs[event.targetActorId];
+    if (mob && event.kind === "damage") {
+      const sourceMember = snapshot.players.find((player) => player.accountId === event.sourceAccountId);
+      useCombatStore.getState().damageMob(
+        mob.id,
+        event.rawAmount ?? event.effectiveAmount ?? 0,
+        event.occurredAt,
+        {
+          actorId: event.sourceActorId,
+          role: sourceMember?.role ?? "damage",
+          abilityId: event.abilityId ?? undefined,
+        },
+        event.school ?? "physical",
+      );
+    }
+  } finally {
+    applyingRef.current = false;
+  }
+}
+
+export function OnlineSessionBridge() {
+  const session = useShellStore((state) => state.session);
+  const activeActivity = useOnlineGroupStore((state) => state.activeActivity);
+  const group = useOnlineGroupStore((state) => state.snapshot.group);
+  const accept = useOnlineSessionStore((state) => state.accept);
+  const fail = useOnlineSessionStore((state) => state.fail);
+  const reset = useOnlineSessionStore((state) => state.reset);
+  const pendingEventsRef = useRef<OnlineRelayEventInput[]>([]);
+  const applyingRef = useRef(false);
+
+  useEffect(() => {
+    if (!session?.accessToken || !activeActivity || !group) {
+      configureOnlineSessionRuntime({ active: false, authority: true, localAccountId: null });
+      reset();
+      return undefined;
+    }
+    const localAccountId = session.ownerId;
+    const immediateAuthority = group.leaderAccountId === localAccountId;
+    configureOnlineSessionRuntime({
+      active: true,
+      authority: immediateAuthority,
+      localAccountId,
+    });
+    let disposed = false;
+    let syncing = false;
+    let latestEventId = 0;
+    let lastWorldSentAt = 0;
+    const remotePositionIds = new Set<string>();
+
+    const unsubscribeCombat = useCombatStore.subscribe((state, previous) => {
+      if (applyingRef.current || state.combatEvents === previous.combatEvents) return;
+      const previousKeys = new Set(previous.combatEvents.map((event) => `${event.id}:${event.occurredAt}:${event.kind}`));
+      for (const event of state.combatEvents) {
+        if (previousKeys.has(`${event.id}:${event.occurredAt}:${event.kind}`)) continue;
+        const relay = eventForRelay(event, localAccountId, group.leaderAccountId === localAccountId);
+        if (relay) pendingEventsRef.current.push(relay);
+      }
+    });
+
+    const synchronize = async () => {
+      if (disposed || syncing) return;
+      syncing = true;
+      const combat = useCombatStore.getState();
+      const game = useGameStore.getState();
+      const outgoingEvents = [...pendingEventsRef.current.splice(0), ...drainOnlineInteractions()];
+      const now = Date.now();
+      const publishWorld = group.leaderAccountId === localAccountId && now - lastWorldSentAt >= WORLD_INTERVAL_MS;
+      if (publishWorld) lastWorldSentAt = now;
+      try {
+        const snapshot = await synchronizeOnlineSession(session, {
+          afterEventId: latestEventId,
+          presence: {
+            position: game.playerPosition,
+            yaw: game.cameraYaw,
+            grounded: game.playerGrounded,
+            health: combat.health,
+            maxHealth: combat.maxHealth,
+            resource: combat.resource,
+            maxResource: combat.maxResource,
+            resourceName: combat.resourceName,
+            selectedTargetId: combat.selectedTargetId,
+            activeCast: combat.activeCast,
+            animationEvent: combat.playerAnimationEvent,
+            equipment: equipmentItemsForOwner(
+              combat.equipment,
+              combat.inventory,
+              PLAYER_EQUIPMENT_OWNER_ID,
+            ),
+          },
+          ...(publishWorld ? { world: sharedWorld() } : {}),
+          ...(outgoingEvents.length ? { events: outgoingEvents } : {}),
+        });
+        if (disposed) return;
+        latestEventId = Math.max(latestEventId, snapshot.latestEventId);
+        configureOnlineSessionRuntime({
+          active: true,
+          authority: snapshot.authority,
+          localAccountId,
+          players: snapshot.players,
+          mobTransforms: snapshot.world?.mobTransforms,
+        });
+        for (const player of snapshot.players) {
+          if (player.accountId === localAccountId) continue;
+          const actorId = onlinePlayerActorId(player.accountId);
+          remotePositionIds.add(actorId);
+          updatePartyRuntimePosition(actorId, player.position[0], player.position[1], player.position[2]);
+        }
+        if (!snapshot.authority && snapshot.world) applySharedWorld(snapshot.world);
+        for (const event of snapshot.events) applyRelayEvent(event, snapshot, applyingRef);
+        useCombatStore.getState().synchronizeActors();
+        accept(snapshot);
+      } catch (error) {
+        if (outgoingEvents.length) pendingEventsRef.current.unshift(...outgoingEvents);
+        if (!disposed) fail(error instanceof Error ? error.message : "The shared activity lost connection.");
+      } finally {
+        syncing = false;
+      }
+    };
+
+    void synchronize();
+    const timer = window.setInterval(() => void synchronize(), SYNC_INTERVAL_MS);
+    return () => {
+      disposed = true;
+      window.clearInterval(timer);
+      unsubscribeCombat();
+      for (const id of remotePositionIds) removePartyRuntimePosition(id);
+      pendingEventsRef.current = [];
+      configureOnlineSessionRuntime({ active: false, authority: true, localAccountId: null });
+      reset();
+    };
+  }, [accept, activeActivity?.id, fail, group?.id, group?.leaderAccountId, reset, session?.accessToken, session?.ownerId]);
+
+  return null;
+}

src/game/PartyBridge.tsx

@@ -5,6 +5,7 @@ import { resetPartyRuntimeClock } from "./partyRuntime";
 import { usePartyStore } from "./partyStore";
 import { useGameStore } from "./store";
 import { useManastormStore } from "./manastormStore";
+import { onlineGroupAiPartySize, useOnlineGroupStore } from "../app/onlineGroupStore";
 
 /** Owns party lifecycle; the combat interval itself remains in CombatBridge. */
 export function PartyBridge() {
@@ -12,6 +13,7 @@ export function PartyBridge() {
   const playerRole = useShellStore((state) => state.activeDungeonRole);
   const gameMode = useGameStore((state) => state.gameMode);
   const manastormPartySize = useManastormStore((state) => state.partySize);
+  const onlineActivity = useOnlineGroupStore((state) => state.activeActivity);
   const level = useCombatStore((state) => state.level);
   const resetRevision = useGameStore((state) => state.resetRevision);
   const mountedResetRevision = useRef(resetRevision);
@@ -20,17 +22,22 @@ export function PartyBridge() {
     if (!character) return;
     const combat = useCombatStore.getState();
     const party = usePartyStore.getState();
+    const requestedPartySize = gameMode === "manastorm" ? manastormPartySize : 5;
+    const aiPartySize = onlineActivity
+      && onlineActivity.type === (gameMode === "manastorm" ? "manastorm" : "dungeon")
+      ? onlineGroupAiPartySize(onlineActivity.partySize)
+      : requestedPartySize;
     party.initializeParty(
       character.id,
       combat.level,
       combat.health,
       playerRole,
-      gameMode === "manastorm" ? manastormPartySize : 5,
+      aiPartySize,
       character.categoryId ?? "wow",
     );
     usePartyStore.getState().syncEquipment(combat.equipment, combat.inventory);
     resetPartyRuntimeClock();
-  }, [character?.id, gameMode, manastormPartySize, playerRole]);
+  }, [character?.id, gameMode, manastormPartySize, onlineActivity?.id, playerRole]);
 
   useEffect(() => {
     usePartyStore.getState().syncLevel(level);

src/game/abilityCatalog.test.ts

@@ -38,7 +38,20 @@ describe("baseline ability catalog", () => {
         const iconPath = path.join(process.cwd(), "public", ability.icon.slice(1));
         expect(existsSync(iconPath), `${ability.name} icon should exist at ${iconPath}`).toBe(true);
         expect(statSync(iconPath).size, `${ability.name} icon should not be empty`).toBeGreaterThan(0);
-        expect(ability.cost.resource).toBe(resource.type);
+        if (characterClass.mode !== "classic" || ability.cost.amount > 0) {
+          const classicResources: Partial<Record<typeof characterClass.id, readonly string[]>> = {
+            warrior: ["rage", "health"],
+            rogue: ["energy"],
+            "death-knight": ["runic-power", "health"],
+            druid: ["mana", "rage", "energy"],
+            warlock: ["mana", "health"],
+          };
+          expect(
+            characterClass.mode === "classic"
+              ? classicResources[characterClass.id] ?? [resource.type]
+              : ["mana", "rage", "energy", "runic-power", "focus", "health"],
+          ).toContain(ability.cost.resource);
+        }
         expect(ability.cost.amount).toBeGreaterThanOrEqual(0);
         expect(ability.effects.length).toBeGreaterThan(0);
         expect(allIds.has(ability.id)).toBe(false);

src/game/abilityCatalog.ts

@@ -6,11 +6,68 @@ import {
 import { WOW335_ABILITIES_BY_CLASS } from "./wow335AbilityCatalog";
 import { ROM_ALL_ABILITIES, ROM_ELITE_ABILITIES, ROM_ORDINARY_ABILITIES_BY_CLASS, type RomSkillGroup } from "./romAbilityCatalog";
 import { registerAbilityAnimationLookup } from "./abilityAnimationLookup";
-import type { AuraDefinition, DispelCategory } from "./combatAuras";
+import type { AuraDefinition, DamageSchool, DispelCategory } from "./combatAuras";
 
-export type ResourceType = "mana" | "rage" | "energy" | "runic-power" | "focus" | "nature-power" | "psi" | "health";
-export type AbilityTarget = "hostile" | "friendly" | "self";
+export type ResourceType =
+  | "mana"
+  | "rage"
+  | "energy"
+  | "runic-power"
+  | "focus"
+  | "nature-power"
+  | "psi"
+  | "health"
+  | "holy-power"
+  | "chi"
+  | "soul-power"
+  | `custom:${string}`;
+export type AbilityTarget = "hostile" | "friendly" | "any" | "self";
 export type AbilityCastMode = "instant" | "cast" | "channel";
+export type AbilityTargetShape = "unit" | "circle" | "cone" | "chain" | "ground";
+
+export interface AbilityTargetingRules {
+  readonly shape: AbilityTargetShape;
+  readonly requiresLineOfSight?: boolean;
+  readonly requiresFacing?: boolean;
+  readonly requiresBehindTarget?: boolean;
+  readonly attackArcRadians?: number;
+  readonly radius?: number;
+  readonly maximumTargets?: number;
+  readonly jumpRange?: number;
+  readonly groundRange?: number;
+}
+
+export interface AbilityCastRules {
+  readonly school?: DamageSchool;
+  readonly canCastWhileMoving?: boolean;
+  readonly pushbackImmune?: boolean;
+  /** A fraction from zero to one, applied independently to each pushback hit. */
+  readonly pushbackResistance?: number;
+}
+
+export interface AbilityRuneCost {
+  readonly blood?: number;
+  readonly frost?: number;
+  readonly unholy?: number;
+}
+
+export interface AbilityAiHints {
+  readonly categories: readonly (
+    | "damage"
+    | "execute"
+    | "heal"
+    | "emergency-heal"
+    | "area-heal"
+    | "mitigation"
+    | "taunt"
+    | "interrupt"
+    | "dispel"
+    | "resurrection"
+    | "control"
+    | "debuff"
+  )[];
+  readonly priority?: number;
+}
 export type MobStatusKind =
   | "slow"
   | "stun"
@@ -63,6 +120,8 @@ export interface AbilityAmountScaling {
   readonly basePoints?: number;
   readonly dieSides?: number;
   readonly pointsPerLevel?: number;
+  /** Additional power coefficient gained per source skill level. */
+  readonly coefficientPerLevel?: number;
   readonly bonusPowerCoefficient?: number;
   readonly sourceLevel?: number;
   readonly maxScalingLevel?: number;
@@ -77,15 +136,17 @@ export type AbilityEffect =
   | ({ readonly kind: "hot"; readonly coefficient: number; readonly ticks: number; readonly intervalMs: number } & AbilityAmountScaling)
   | { readonly kind: "resurrection"; readonly percentMaxHealth: number }
   | { readonly kind: "summon"; readonly creatureId: number; readonly coefficient: number; readonly durationMs: number }
-  | { readonly kind: "resource"; readonly amount: number; readonly resource?: ResourceType }
+  | { readonly kind: "resource"; readonly amount: number; readonly resource?: ResourceType; readonly percentage?: boolean }
   | { readonly kind: "combo"; readonly amount: number }
   | { readonly kind: "taunt"; readonly durationMs: number; readonly maxTargets?: number }
-  | { readonly kind: "status"; readonly status: MobStatusKind; readonly durationMs: number; readonly magnitude?: number; readonly maxTargets?: number }
+  | { readonly kind: "status"; readonly status: MobStatusKind; readonly durationMs: number; readonly magnitude?: number; readonly maxTargets?: number; readonly breakOnDamage?: boolean }
   | {
     readonly kind: "apply-aura";
     readonly aura: AuraDefinition;
     /** Some hostile spells apply their beneficial rider to the caster. */
     readonly recipient?: "ability-target" | "caster";
+    /** Party/raid area auras are applied to the player and every active party member. */
+    readonly scope?: "target" | "party";
     readonly control?: AbilityAuraControl;
     readonly sourceEffectType: number;
     readonly sourceAuraType: number;
@@ -109,6 +170,7 @@ export type AbilityEffect =
     readonly kind: "threat";
     readonly mode: "flat" | "percent" | "redirect";
     readonly amount: number;
+    readonly recipient?: "caster" | "ability-target";
   }
   | {
     readonly kind: "movement";
@@ -119,7 +181,14 @@ export type AbilityEffect =
   | { readonly kind: "pet"; readonly action: "summon" | "call" | "recall" | "dismiss" | "resurrect" | "feed" | "tame"; readonly creatureId?: number }
   | { readonly kind: "totem"; readonly action: "destroy-all" }
   | { readonly kind: "rune"; readonly action: "activate"; readonly count: number }
-  | { readonly kind: "cooldown-reset"; readonly mode: "reset" | "reduce"; readonly abilityName?: string; readonly amountMs?: number }
+  | {
+    readonly kind: "cooldown-reset";
+    readonly mode: "reset" | "reduce";
+    readonly abilityName?: string;
+    readonly amountMs?: number;
+    /** Fraction of the target ability's remaining cooldown removed at execution time. */
+    readonly amountPercent?: number;
+  }
   | { readonly kind: "trigger-spell"; readonly spellId: number; readonly withValue?: number }
   | {
     /** A known combat-side DBC script hook that requires a spell-specific handler. */
@@ -140,6 +209,7 @@ export type AbilityEffect =
   }
   | {
     readonly kind: "utility";
+    readonly action?: "create-item" | "open-lock" | "portal" | "weapon-enchant" | "pickpocket" | "farsight" | "class-script";
     readonly effectType: number;
     readonly auraType: number;
     readonly miscValue: number;
@@ -165,6 +235,9 @@ export interface AbilityRankDefinition {
   readonly cost: AbilityCost;
   readonly costs?: readonly AbilityCost[];
   readonly effects: readonly AbilityEffect[];
+  readonly targeting?: AbilityTargetingRules;
+  readonly castRules?: AbilityCastRules;
+  readonly runeCost?: AbilityRuneCost;
 }
 
 export interface AbilityDefinition {
@@ -188,6 +261,10 @@ export interface AbilityDefinition {
   readonly cost: AbilityCost;
   readonly costs?: readonly AbilityCost[];
   readonly effects: readonly AbilityEffect[];
+  readonly targeting?: AbilityTargetingRules;
+  readonly castRules?: AbilityCastRules;
+  readonly runeCost?: AbilityRuneCost;
+  readonly ai?: AbilityAiHints;
   readonly passive?: boolean;
   readonly source?: "core" | "wow335-progression" | "ascension-progression" | "coa-starter" | "coa-progression" | "coa-tree" | "runewaker";
   readonly romSkillGroup?: RomSkillGroup;
@@ -793,6 +870,9 @@ export function abilityAtLevel(
     cost: rank.cost,
     costs: rank.costs ?? [rank.cost],
     effects: rank.effects,
+    targeting: rank.targeting ?? ability.targeting,
+    castRules: rank.castRules ?? ability.castRules,
+    runeCost: rank.runeCost ?? ability.runeCost,
   };
 }
 

src/game/abilityRules.ts

@@ -0,0 +1,104 @@
+import type {
+  AbilityAiHints,
+  AbilityDefinition,
+  AbilityRuneCost,
+  AbilityTargetingRules,
+} from "./abilityCatalog";
+
+const CHAIN_ABILITIES = new Set(["chain heal", "chain lightning", "prayer of mending"]);
+const GROUND_ABILITIES = new Set([
+  "blizzard", "rain of fire", "flamestrike", "death and decay", "consecration",
+  "volley", "hurricane", "earthquake", "meteor", "healing rain",
+]);
+const CONE_ABILITIES = new Set([
+  "cone of cold", "dragon's breath", "dragons breath", "shockwave", "cleave",
+  "swipe", "swipe (cat)", "fan of knives", "whirlwind",
+]);
+const BEHIND_ABILITIES = new Set(["backstab", "ambush", "garrote", "ravage", "shred", "pounce"]);
+const MOVEMENT_CAST_ABILITIES = new Set(["scorch", "steady shot", "spiritwalker's grace"]);
+const EMERGENCY_HEAL_ABILITIES = new Set([
+  "flash heal", "flash of light", "swiftmend", "lay on hands", "nature's swiftness",
+]);
+
+const RUNE_COSTS_BY_SPELL_ID: Readonly<Record<number, AbilityRuneCost>> = Object.freeze({
+  49909: { frost: 1 }, 45524: { frost: 1 }, 49184: { frost: 1 }, 47528: { frost: 1 },
+  49921: { unholy: 1 }, 55271: { unholy: 1 }, 49222: { unholy: 1 }, 51052: { unholy: 1 },
+  49930: { blood: 1 }, 55262: { blood: 1 }, 49941: { blood: 1 }, 50842: { blood: 1 },
+  48982: { blood: 1 }, 49005: { blood: 1 },
+  49924: { frost: 1, unholy: 1 }, 51425: { frost: 1, unholy: 1 },
+  49938: { blood: 1, frost: 1, unholy: 1 },
+});
+const RUNE_COSTS_BY_NAME: Readonly<Record<string, AbilityRuneCost>> = Object.freeze({
+  "icy touch": { frost: 1 }, "chains of ice": { frost: 1 }, "howling blast": { frost: 1 }, "mind freeze": { frost: 1 },
+  "plague strike": { unholy: 1 }, "scourge strike": { unholy: 1 }, "bone shield": { unholy: 1 }, "anti-magic zone": { unholy: 1 },
+  "blood strike": { blood: 1 }, "heart strike": { blood: 1 }, "blood boil": { blood: 1 }, "pestilence": { blood: 1 },
+  "rune tap": { blood: 1 }, "mark of blood": { blood: 1 },
+  "death strike": { frost: 1, unholy: 1 }, "obliterate": { frost: 1, unholy: 1 },
+  "death and decay": { blood: 1, frost: 1, unholy: 1 },
+});
+
+export function targetingRulesForAbility(ability: AbilityDefinition): AbilityTargetingRules {
+  if (ability.targeting) return ability.targeting;
+  const name = ability.name.toLowerCase();
+  const shape = CHAIN_ABILITIES.has(name)
+    ? "chain"
+    : GROUND_ABILITIES.has(name) || name.endsWith(" trap")
+      ? "ground"
+      : CONE_ABILITIES.has(name) || name.endsWith(" breath")
+        ? "cone"
+        : ability.radius && ability.radius > 0
+          ? "circle"
+          : "unit";
+  const hostile = ability.target === "hostile" || ability.target === "any";
+  return Object.freeze({
+    shape,
+    requiresLineOfSight: ability.target !== "self",
+    // WoW friendly spells are deliberately facing independent.
+    requiresFacing: hostile && shape !== "circle" && shape !== "ground",
+    requiresBehindTarget: hostile && BEHIND_ABILITIES.has(name),
+    attackArcRadians: shape === "cone" ? Math.PI / 2 : Math.PI,
+    ...(ability.radius ? { radius: ability.radius } : {}),
+    ...(shape === "chain" ? { maximumTargets: 3, jumpRange: 12 } : {}),
+    ...(shape === "ground" ? { groundRange: ability.range.max, radius: ability.radius ?? 8 } : {}),
+  });
+}
+
+export function canAbilityCastWhileMoving(ability: AbilityDefinition): boolean {
+  return ability.castRules?.canCastWhileMoving ?? MOVEMENT_CAST_ABILITIES.has(ability.name.toLowerCase());
+}
+
+export function abilityPushbackResistance(ability: AbilityDefinition): number {
+  if (ability.castRules?.pushbackImmune) return 1;
+  return Math.max(0, Math.min(1, ability.castRules?.pushbackResistance ?? 0));
+}
+
+/** WotLK 3.3.5 rune costs for the active DK toolkit imported by the game. */
+export function runeCostForAbility(ability: AbilityDefinition): AbilityRuneCost | null {
+  if (ability.runeCost) return ability.runeCost;
+  return RUNE_COSTS_BY_SPELL_ID[ability.dbcSpellId]
+    ?? RUNE_COSTS_BY_NAME[ability.name.toLowerCase()]
+    ?? null;
+}
+
+export function aiHintsForAbility(ability: AbilityDefinition): AbilityAiHints {
+  if (ability.ai) return ability.ai;
+  const name = ability.name.toLowerCase();
+  const categories = new Set<AbilityAiHints["categories"][number]>();
+  for (const effect of ability.effects) {
+    if (["damage", "dot", "finisher-damage"].includes(effect.kind)) categories.add("damage");
+    if (effect.kind === "execute") categories.add("execute");
+    if (effect.kind === "heal" || effect.kind === "hot") categories.add("heal");
+    if (effect.kind === "shield") categories.add("mitigation");
+    if (effect.kind === "taunt") categories.add("taunt");
+    if (effect.kind === "interrupt") categories.add("interrupt");
+    if (effect.kind === "dispel" || effect.kind === "dispel-mechanic") categories.add("dispel");
+    if (effect.kind === "resurrection") categories.add("resurrection");
+    if (effect.kind === "status") {
+      categories.add(effect.status === "interrupt" ? "interrupt" : "control");
+    }
+    if (effect.kind === "dot" || (effect.kind === "apply-aura" && effect.aura.disposition === "debuff")) categories.add("debuff");
+  }
+  if (EMERGENCY_HEAL_ABILITIES.has(name)) categories.add("emergency-heal");
+  if ((ability.radius ?? 0) > 0 && categories.has("heal")) categories.add("area-heal");
+  return Object.freeze({ categories: Object.freeze([...categories]) });
+}

src/game/coaAbilityCatalog.test.ts

@@ -0,0 +1,188 @@
+import { describe, expect, it } from "vitest";
+import { COA_CLASS_IDS, type CoaClassId } from "../app/characterCatalog";
+import type { AbilityDefinition, AbilityEffect, AbilityRankDefinition } from "./abilityCatalog";
+import {
+  COA_ABILITIES_BY_CLASS,
+  COA_CLASS_RESOURCES,
+  COA_TRIGGERED_ABILITIES_BY_SPELL_ID,
+} from "./coaAbilityCatalog";
+import {
+  COA_PROGRESSION_CHAINS,
+  COA_TREE_ENTRIES,
+  coaClassIdFromDbcId,
+  coaSpellById,
+} from "./coaLiveCatalog";
+
+const abilities = Object.values(COA_ABILITIES_BY_CLASS).flat();
+const ranksFor = (ability: AbilityDefinition): readonly AbilityRankDefinition[] => ability.ranks ?? [{
+  rank: 1,
+  spellId: ability.dbcSpellId,
+  level: ability.unlockLevel,
+  description: ability.description,
+  castMode: ability.castMode,
+  castTimeMs: ability.castTimeMs,
+  cooldownMs: ability.cooldownMs,
+  gcdMs: ability.gcdMs,
+  cost: ability.cost,
+  effects: ability.effects,
+}];
+const ranks = abilities.flatMap((ability) => ranksFor(ability).map((rank) => ({ ability, rank })));
+const byName = (classId: CoaClassId, name: string): AbilityDefinition => {
+  const ability = COA_ABILITIES_BY_CLASS[classId].find((candidate) => candidate.name === name);
+  if (!ability) throw new Error(`Missing ${classId} ability ${name}`);
+  return ability;
+};
+const rankEffectsForSpell = (spellId: number): readonly AbilityEffect[] => ranks
+  .find(({ rank }) => rank.spellId === spellId)?.rank.effects ?? [];
+
+describe("Ascension Conquest ability catalog", () => {
+  it("covers every class, source family, and playable rank", () => {
+    expect(Object.keys(COA_ABILITIES_BY_CLASS).sort()).toEqual([...COA_CLASS_IDS].sort());
+    expect(Object.keys(COA_CLASS_RESOURCES).sort()).toEqual([...COA_CLASS_IDS].sort());
+    expect(abilities).toHaveLength(1_275);
+    expect(ranks).toHaveLength(3_394);
+    expect(new Set(ranks.map(({ rank }) => rank.spellId)).size).toBe(3_347);
+
+    const runtimeSpellIds = new Set(ranks.map(({ rank }) => rank.spellId));
+    for (const chain of COA_PROGRESSION_CHAINS) {
+      const classId = coaClassIdFromDbcId(chain.classId);
+      expect(classId, chain.name).not.toBeNull();
+      for (const rank of chain.ranks) {
+        expect(runtimeSpellIds.has(rank.spellId), `${classId}: ${chain.name} rank ${rank.rank}`).toBe(true);
+      }
+    }
+    for (const entry of COA_TREE_ENTRIES.filter((candidate) => candidate.entryType === "Ability")) {
+      const classId = coaClassIdFromDbcId(entry.classId);
+      if (!classId) continue;
+      for (const rank of entry.rankDescriptions) {
+        expect(runtimeSpellIds.has(rank.spellId), `${classId}: ${entry.name} rank ${rank.rank}`).toBe(true);
+      }
+    }
+  });
+
+  it("gives every family and rank finite, executable runtime data", () => {
+    expect(new Set(abilities.map((ability) => ability.id)).size).toBe(abilities.length);
+    for (const ability of abilities) {
+      expect(ability.classId, ability.id).toBeTruthy();
+      expect(ability.name.length, ability.id).toBeGreaterThan(0);
+      expect(ability.icon.startsWith("/assets/ui/spells/"), ability.id).toBe(true);
+      expect(Number.isFinite(ability.range.min), ability.id).toBe(true);
+      expect(Number.isFinite(ability.range.max), ability.id).toBe(true);
+      expect(ability.range.max, ability.id).toBeGreaterThanOrEqual(ability.range.min);
+      expect(ability.cooldownMs, ability.id).toBeGreaterThanOrEqual(0);
+      for (const rank of ranksFor(ability)) {
+        const label = `${ability.id} rank ${rank.rank} (${rank.spellId})`;
+        expect(rank.spellId, label).toBeGreaterThan(0);
+        expect(rank.level, label).toBeGreaterThan(0);
+        expect(rank.description.length, label).toBeGreaterThan(0);
+        expect(rank.castTimeMs, label).toBeGreaterThanOrEqual(0);
+        expect(rank.cooldownMs, label).toBeGreaterThanOrEqual(0);
+        expect(rank.gcdMs, label).toBeGreaterThanOrEqual(0);
+        expect(Number.isFinite(rank.cost.amount), label).toBe(true);
+        expect(rank.cost.amount, label).toBeGreaterThanOrEqual(0);
+        expect(rank.effects.length, label).toBeGreaterThan(0);
+        expect(rank.effects.some((effect) => effect.kind === "scripted" || effect.kind === "unsupported"), label).toBe(false);
+        if (!ability.passive) {
+          expect(rank.effects.some((effect) => effect.kind !== "utility" || effect.action !== "class-script"), label).toBe(true);
+        }
+      }
+    }
+  });
+
+  it("translates every standard DBC combat effect into its executable semantic", () => {
+    const applyAuraTypes = new Set([0, 3, 6, 27, 35, 65, 119, 128, 129, 143, 190]);
+    const triggerTypes = new Set([32, 64, 140, 141, 142, 148, 151, 160, 165, 169, 175, 178, 183]);
+    const movementTypes = new Set([5, 29, 41, 42, 43, 79, 96, 98, 138, 144, 149]);
+    for (const { ability, rank } of ranks) {
+      const dbc = coaSpellById(rank.spellId)?.dbc;
+      if (!dbc) continue;
+      const kinds = new Set(rank.effects.map((effect) => effect.kind));
+      for (const effect of dbc.effects) {
+        const label = `${ability.classId}: ${ability.name} rank ${rank.rank}, DBC ${effect.effectType}/${effect.auraType}`;
+        if (effect.effectType === 2 || [17, 31, 58, 121].includes(effect.effectType)) expect(kinds.has("damage"), label).toBe(true);
+        if ([10, 67, 136].includes(effect.effectType)) expect(kinds.has("heal"), label).toBe(true);
+        if (applyAuraTypes.has(effect.effectType) && effect.auraType > 0) expect(kinds.has("apply-aura"), label).toBe(true);
+        if (effect.auraType === 3 && effect.periodMs > 0) expect(kinds.has("dot"), label).toBe(true);
+        if ([8, 20].includes(effect.auraType) && effect.periodMs > 0) expect(kinds.has("hot"), label).toBe(true);
+        if (triggerTypes.has(effect.effectType) && effect.triggerSpellId > 0) expect(kinds.has("trigger-spell"), label).toBe(true);
+        if (movementTypes.has(effect.effectType)) expect(kinds.has("movement"), label).toBe(true);
+        if (effect.effectType === 38) expect(kinds.has("dispel"), label).toBe(true);
+        if (effect.effectType === 68) expect(kinds.has("interrupt"), label).toBe(true);
+        if ([18, 94, 113, 117].includes(effect.effectType)) expect(kinds.has("resurrection"), label).toBe(true);
+        if ([192, 195].includes(effect.effectType)) expect(kinds.has("cooldown-reset"), label).toBe(true);
+      }
+    }
+  });
+
+  it("preserves percentages, actual power pools, and shared cooldown groups", () => {
+    const percentageCosts = ranks.filter(({ rank }) => rank.cost.percentage);
+    expect(percentageCosts.length).toBeGreaterThan(1_500);
+    expect(ranks.some(({ rank }) => rank.cost.resource === "health")).toBe(true);
+    expect(ranks.some(({ rank }) => rank.cost.resource === "energy")).toBe(true);
+    expect(ranks.some(({ rank }) => rank.cost.resource === "rage")).toBe(true);
+    expect(ranks.some(({ rank }) => rank.cost.resource === "runic-power")).toBe(true);
+
+    const ascension = byName("sun-cleric", "Solar Invocation: Ascension");
+    const revelation = byName("sun-cleric", "Solar Invocation: Revelation");
+    expect(ascension.cooldownGroup).toBe("coa:solar-invocation-spells");
+    expect(revelation.cooldownGroup).toBe(ascension.cooldownGroup);
+    expect(revelation.target).toBe("any");
+
+    const profound = byName("templar", "Profound Enlightenment");
+    expect(profound.effects.filter((effect) => effect.kind === "cooldown-reset")).toEqual([
+      expect.objectContaining({ mode: "reduce", amountPercent: 0.5 }),
+      expect.objectContaining({ mode: "reduce", amountPercent: 0.5 }),
+      expect.objectContaining({ mode: "reduce", amountPercent: 0.5 }),
+    ]);
+  });
+
+  it("keeps representative healing, protection, control, proc, trigger, and reset spells functional", () => {
+    expect(byName("sun-cleric", "Solar Invocation: Ascension")).toMatchObject({ target: "self", radius: 40 });
+    expect(byName("guardian", "Feats of Strength")).toMatchObject({ target: "friendly" });
+    expect(byName("knight-of-xoroth", "Black Shield").ranks?.every((rank) => rank.effects.some((effect) => effect.kind === "shield"))).toBe(true);
+    expect(byName("witch-hunter", "Brand of the Unworthy").effects).toContainEqual(expect.objectContaining({ kind: "status", status: "sleep" }));
+    expect(byName("necromancer", "Plaguestorm").ranks?.every((rank) => rank.effects.some((effect) => effect.kind === "dot"))).toBe(true);
+    expect(byName("templar", "Profound Enlightenment").effects.filter((effect) => effect.kind === "cooldown-reset")).toHaveLength(3);
+    expect(byName("sun-cleric", "New Day").effects.filter((effect) => effect.kind === "cooldown-reset")).toHaveLength(3);
+
+    const gaze = byName("cultist", "Gaze of C'Thun");
+    expect(gaze.target).toBe("any");
+    expect(gaze.effects.some((effect) => effect.kind === "trigger-spell")).toBe(true);
+    expect(gaze.effects.some((effect) => effect.kind === "damage")).toBe(true);
+    expect(gaze.effects.some((effect) => effect.kind === "heal")).toBe(true);
+
+    const razorice = byName("necromancer", "Razorice");
+    const procs = razorice.effects
+      .filter((effect): effect is Extract<AbilityEffect, { kind: "apply-aura" }> => effect.kind === "apply-aura")
+      .flatMap((effect) => effect.aura.procs ?? []);
+    expect(procs.length).toBeGreaterThan(0);
+    expect(procs.every((proc) => proc.action.kind === "damage" || proc.action.kind === "custom")).toBe(true);
+  });
+
+  it("keeps every rank spell lookup executable, including recursively expanded trigger spells", () => {
+    for (const { ability, rank } of ranks) {
+      expect(rankEffectsForSpell(rank.spellId).length, `${ability.name} ${rank.spellId}`).toBeGreaterThan(0);
+    }
+    const gaze = byName("cultist", "Gaze of C'Thun");
+    expect(gaze.effects.filter((effect) => effect.kind === "trigger-spell")).toEqual(expect.arrayContaining([
+      expect.objectContaining({ spellId: 520334 }),
+      expect.objectContaining({ spellId: 520335 }),
+    ]));
+  });
+
+  it("ships executable hidden payloads for proc-triggered DBC spell IDs", () => {
+    expect(Object.keys(COA_TRIGGERED_ABILITIES_BY_SPELL_ID)).toHaveLength(585);
+    expect(COA_TRIGGERED_ABILITIES_BY_SPELL_ID[800951]).toMatchObject({
+      name: "Battle Rhythm",
+      effects: expect.arrayContaining([{ kind: "resource", amount: 5 }]),
+    });
+    expect(Object.values(COA_TRIGGERED_ABILITIES_BY_SPELL_ID).filter((ability) => (
+      ability.effects.some((effect) => effect.kind !== "utility")
+    ))).toHaveLength(547);
+    for (const [spellId, ability] of Object.entries(COA_TRIGGERED_ABILITIES_BY_SPELL_ID)) {
+      expect(ability.dbcSpellId, spellId).toBe(Number(spellId));
+      expect(ability.effects.length, spellId).toBeGreaterThan(0);
+      expect(ability.effects.some((effect) => effect.kind === "scripted" || effect.kind === "unsupported"), spellId).toBe(false);
+    }
+  });
+});

src/game/coaAbilityRuntimeCatalog.ts

@@ -6,10 +6,15 @@ interface CoaAbilityRuntimeSnapshot {
   readonly schemaVersion: 1;
   readonly abilitiesByClass: Readonly<Record<CoaClassId, readonly AbilityDefinition[]>>;
   readonly resourcesByClass: Readonly<Record<CoaClassId, ClassResourceProfile>>;
+  readonly triggeredAbilitiesBySpellId: Readonly<Record<number, AbilityDefinition>>;
 }
 
 const snapshot = generated as unknown as CoaAbilityRuntimeSnapshot;
 
 export const COA_RUNTIME_ABILITIES_BY_CLASS = snapshot.abilitiesByClass;
 export const COA_RUNTIME_CLASS_RESOURCES = snapshot.resourcesByClass;
+export const COA_RUNTIME_TRIGGERED_ABILITIES_BY_SPELL_ID = snapshot.triggeredAbilitiesBySpellId;
 
+export function coaTriggeredAbilityBySpellId(spellId: number): AbilityDefinition | null {
+  return COA_RUNTIME_TRIGGERED_ABILITIES_BY_SPELL_ID[spellId] ?? null;
+}

src/game/coaCombatRuntime.test.ts

@@ -0,0 +1,55 @@
+import { beforeEach, describe, expect, it } from "vitest";
+import { clearMobRuntimeRegistry, setMobPosition } from "./mobRuntimeRegistry";
+import { clearPartyRuntimeRegistry, registerPartyRuntimePosition } from "./partyRuntimeRegistry";
+import { useCombatStore } from "./combatStore";
+import { usePartyStore } from "./partyStore";
+
+describe("Ascension Conquest combat runtime", () => {
+  beforeEach(() => {
+    clearMobRuntimeRegistry();
+    clearPartyRuntimeRegistry();
+  });
+
+  it("heals a selected ally with an enemy-or-ally spell", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "cultist", raceId: "human", level: 20 });
+    usePartyStore.getState().initializeParty("coa-any-friendly", 20, useCombatStore.getState().health, "healer", 2, "coa");
+    const member = usePartyStore.getState().members[0]!;
+    usePartyStore.getState().damageMember(member.id, 500);
+    registerPartyRuntimePosition(member.id, [3, 0, 0]);
+    usePartyStore.getState().selectMember(member.id);
+    const injuredHealth = usePartyStore.getState().members[0]!.health;
+
+    expect(useCombatStore.getState().castAbility("cultist-gaze-of-cthun", undefined, 1_000)).toMatchObject({ ok: true });
+
+    expect(usePartyStore.getState().members[0]!.health).toBeGreaterThan(injuredHealth);
+  });
+
+  it("damages a selected enemy with the same enemy-or-ally spell", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "cultist", raceId: "human", level: 20 });
+    usePartyStore.getState().clearSelection();
+    useCombatStore.getState().registerMob("gaze-dummy", { name: "Gaze Dummy", maxHealth: 5_000 });
+    setMobPosition("gaze-dummy", [3, 0, 0]);
+    useCombatStore.getState().selectMob("gaze-dummy");
+
+    expect(useCombatStore.getState().castAbility("cultist-gaze-of-cthun", undefined, 1_000)).toMatchObject({ ok: true });
+
+    expect(useCombatStore.getState().mobs["gaze-dummy"]!.health).toBeLessThan(5_000);
+  });
+
+  it("executes a hidden DBC payload when a passive proc fires", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "pyromancer", raceId: "human", level: 20 });
+    usePartyStore.getState().initializeParty("coa-hidden-proc", 20, useCombatStore.getState().health, "healer", 2, "coa");
+    const member = usePartyStore.getState().members[0]!;
+    usePartyStore.getState().damageMember(member.id, 500);
+    registerPartyRuntimePosition(member.id, [3, 0, 0]);
+    usePartyStore.getState().selectMember(member.id);
+    expect(useCombatStore.getState().auras.some((aura) => aura.definition.name.includes("Phoenix Handler"))).toBe(true);
+
+    expect(useCombatStore.getState().castAbility("coa-24-cinderheart-476-502044", undefined, 1_000)).toMatchObject({ ok: true });
+    useCombatStore.getState().tick(0.1, 4_100);
+
+    expect(useCombatStore.getState().auras.some((aura) => (
+      aura.definition.id === "coa:704865:effect:0:aura:23"
+    ))).toBe(true);
+  });
+});

src/game/combatActorAuthority.ts

@@ -0,0 +1,105 @@
+import { resourceProfileForClass, type ResourceType } from "./abilityCatalog";
+import {
+  normalizeActorResourcePool,
+  type CombatActorState,
+} from "./combatActors";
+import type { PartyMember } from "./partyStore";
+
+/**
+ * Creates the authoritative companion actor. Existing actor values win over
+ * the party-frame compatibility record once the actor has entered combat.
+ */
+export function companionActorFromMember(
+  member: PartyMember,
+  absorb = 0,
+  existing?: CombatActorState | null,
+): CombatActorState {
+  const profile = resourceProfileForClass(member.classId);
+  const resources = existing?.kind === "companion"
+    ? existing.resources
+    : Object.fromEntries(Object.entries(member.resourcePools).map(([id, current]) => [id,
+        normalizeActorResourcePool(
+          id,
+          current ?? 0,
+          id === member.resourceType ? member.maxResource : 100,
+          id === member.resourceType ? profile.regenerationPerSecond : 0,
+          member.lastResourceSpentAt[id as ResourceType] ?? 0,
+        ),
+      ]));
+  const actor = existing?.kind === "companion" ? existing : null;
+  return Object.freeze({
+    id: member.id,
+    threatActorId: member.id,
+    kind: "companion" as const,
+    classId: member.classId,
+    level: member.level,
+    health: actor?.health ?? member.health,
+    maxHealth: actor?.maxHealth ?? member.maxHealth,
+    absorb,
+    resources,
+    cooldowns: actor?.cooldowns ?? member.cooldowns,
+    globalCooldownEndsAt: actor?.globalCooldownEndsAt ?? member.globalCooldownEndsAt,
+    cast: actor?.cast ?? member.activeCast,
+    controlledUntil: actor?.controlledUntil ?? member.controlledUntil,
+    schoolLockedUntil: actor?.schoolLockedUntil ?? member.schoolLockedUntil,
+    comboPoints: actor?.comboPoints ?? 0,
+    comboTargetId: actor?.comboTargetId ?? null,
+    runes: actor?.runes ?? member.runes,
+    abilityIds: actor?.abilityIds,
+    alive: (actor?.health ?? member.health) > 0,
+  });
+}
+
+/** Party and scene consumers receive a read-compatible mirror of actor state. */
+export function memberFromCompanionActor(member: PartyMember, actor?: CombatActorState | null): PartyMember {
+  if (!actor || actor.kind !== "companion") return member;
+  const resourcePools = Object.fromEntries(Object.entries(actor.resources).map(([id, pool]) => [id, pool.current])) as Partial<Record<ResourceType, number>>;
+  const lastResourceSpentAt = Object.fromEntries(Object.entries(actor.resources).map(([id, pool]) => [id, pool.lastSpentAt])) as Partial<Record<ResourceType, number>>;
+  const primary = actor.resources[member.resourceType];
+  return {
+    ...member,
+    health: actor.health,
+    maxHealth: actor.maxHealth,
+    resource: primary?.current ?? member.resource,
+    maxResource: primary?.maximum ?? member.maxResource,
+    resourcePools,
+    lastResourceSpentAt,
+    cooldowns: actor.cooldowns,
+    globalCooldownEndsAt: actor.globalCooldownEndsAt,
+    activeCast: actor.cast,
+    activeCastTargetId: actor.cast?.targetId ?? member.activeCastTargetId,
+    schoolLockedUntil: actor.schoolLockedUntil,
+    runes: actor.runes,
+    controlledUntil: actor.controlledUntil,
+    status: actor.health <= 0 ? "down" : member.status,
+  };
+}
+
+export function companionActorWithMemberRuntime(
+  actor: CombatActorState,
+  member: PartyMember,
+): CombatActorState {
+  const profile = resourceProfileForClass(member.classId);
+  const resources = Object.fromEntries(Object.entries(member.resourcePools).map(([id, current]) => [id,
+    normalizeActorResourcePool(
+      id,
+      current ?? 0,
+      id === member.resourceType ? member.maxResource : actor.resources[id]?.maximum ?? 100,
+      id === member.resourceType ? profile.regenerationPerSecond : actor.resources[id]?.regenerationPerSecond ?? 0,
+      member.lastResourceSpentAt[id as ResourceType] ?? actor.resources[id]?.lastSpentAt ?? 0,
+    ),
+  ]));
+  return Object.freeze({
+    ...actor,
+    health: member.health,
+    maxHealth: member.maxHealth,
+    resources,
+    cooldowns: member.cooldowns,
+    globalCooldownEndsAt: member.globalCooldownEndsAt,
+    cast: member.activeCast ? { ...member.activeCast, targetId: member.activeCastTargetId } : null,
+    controlledUntil: member.controlledUntil,
+    schoolLockedUntil: member.schoolLockedUntil,
+    runes: member.runes,
+    alive: member.health > 0,
+  });
+}

src/game/combatActors.ts

@@ -0,0 +1,117 @@
+import type { ClassId } from "../app/characterCatalog";
+import type { DamageSchool } from "./combatAuras";
+
+export type CombatActorKind = "player" | "companion" | "enemy" | "pet" | "totem" | "summon";
+export type CombatResourceId = string;
+export type DeathKnightRuneType = "blood" | "frost" | "unholy" | "death";
+export type CombatActorPosition = readonly [number, number, number];
+
+export interface CombatResourcePoolState {
+  readonly id: CombatResourceId;
+  readonly current: number;
+  readonly maximum: number;
+  readonly regenerationPerSecond: number;
+  /** Mana regeneration observes the five-second rule from this timestamp. */
+  readonly lastSpentAt: number;
+}
+
+export interface DeathKnightRuneState {
+  readonly slot: number;
+  readonly baseType: Exclude<DeathKnightRuneType, "death">;
+  readonly type: DeathKnightRuneType;
+  readonly readyAt: number;
+}
+
+export interface CombatActorCastState {
+  readonly abilityId: string;
+  readonly school: DamageSchool;
+  readonly mode: "cast" | "channel";
+  readonly startedAt: number;
+  readonly completesAt: number;
+  readonly originalDurationMs: number;
+  readonly pushbackHits: number;
+  /** Simulation-space origin used for movement cancellation and completion validation. */
+  readonly origin?: CombatActorPosition;
+  readonly targetId?: string | null;
+}
+
+/**
+ * Renderer-free snapshot shared by every combatant. Specialized player, party,
+ * and mob records may retain presentation fields, but combat rules consume
+ * this common contract.
+ */
+export interface CombatActorState {
+  readonly id: string;
+  /** Stable id used by threat tables even when a renderer entity is replaced. */
+  readonly threatActorId?: string;
+  readonly kind: CombatActorKind;
+  readonly ownerId?: string;
+  readonly classId?: ClassId;
+  readonly level: number;
+  readonly health: number;
+  readonly maxHealth: number;
+  readonly absorb: number;
+  readonly resources: Readonly<Record<CombatResourceId, CombatResourcePoolState>>;
+  readonly cooldowns: Readonly<Record<string, number>>;
+  readonly globalCooldownEndsAt: number;
+  readonly cast: CombatActorCastState | null;
+  readonly controlledUntil: number;
+  readonly schoolLockedUntil: Readonly<Partial<Record<DamageSchool, number>>>;
+  readonly comboPoints: number;
+  readonly comboTargetId: string | null;
+  readonly runes: readonly DeathKnightRuneState[];
+  /** Executable catalog abilities owned by pets, summons, and companions. */
+  readonly abilityIds?: readonly string[];
+  readonly alive: boolean;
+}
+
+export function createDeathKnightRunes(now = 0): readonly DeathKnightRuneState[] {
+  const types = ["blood", "blood", "frost", "frost", "unholy", "unholy"] as const;
+  return Object.freeze(types.map((type, slot) => Object.freeze({
+    slot,
+    baseType: type,
+    type,
+    readyAt: Math.max(0, now),
+  })));
+}
+
+export function normalizeActorResourcePool(
+  id: CombatResourceId,
+  current: number,
+  maximum: number,
+  regenerationPerSecond = 0,
+  lastSpentAt = 0,
+): CombatResourcePoolState {
+  const safeMaximum = Math.max(0, Number.isFinite(maximum) ? maximum : 0);
+  return Object.freeze({
+    id,
+    current: Math.max(0, Math.min(safeMaximum, Number.isFinite(current) ? current : 0)),
+    maximum: safeMaximum,
+    regenerationPerSecond: Math.max(0, Number.isFinite(regenerationPerSecond) ? regenerationPerSecond : 0),
+    lastSpentAt: Math.max(0, Number.isFinite(lastSpentAt) ? lastSpentAt : 0),
+  });
+}
+
+export function spendActorResource(
+  pool: CombatResourcePoolState,
+  amount: number,
+  now: number,
+): CombatResourcePoolState | null {
+  const requested = Math.max(0, Number.isFinite(amount) ? amount : 0);
+  if (pool.current + Number.EPSILON < requested) return null;
+  return Object.freeze({
+    ...pool,
+    current: Math.max(0, pool.current - requested),
+    lastSpentAt: Math.max(pool.lastSpentAt, Number.isFinite(now) ? now : 0),
+  });
+}
+
+export function restoreActorResource(
+  pool: CombatResourcePoolState,
+  amount: number,
+): CombatResourcePoolState {
+  return Object.freeze({
+    ...pool,
+    current: Math.min(pool.maximum, pool.current + Math.max(0, Number.isFinite(amount) ? amount : 0)),
+  });
+}

src/game/combatAuras.ts

@@ -143,6 +143,16 @@ export interface AuraDefinition {
   readonly stackBehavior?: AuraStackBehavior;
   /** Defaults to true. False makes applications from all sources share one aura. */
   readonly uniqueBySource?: boolean;
+  /** A target can have only one aura from an exclusive stance/form/seal/etc. group. */
+  readonly exclusiveGroup?: string;
+  /** Explicit non-numeric gameplay state such as stealth, tracking, flight, or water walking. */
+  readonly utilityTags?: readonly string[];
+  /** Enemy control mechanics ignored while this aura is active. */
+  readonly controlImmunities?: readonly ("fear" | "sleep" | "root" | "stun" | "silence")[];
+  /** Chance from 0 through 1 to reflect an incoming spell. */
+  readonly reflectSpellChance?: number;
+  /** Portion of incoming target damage transferred to the aura source. */
+  readonly redirectDamagePercent?: number;
   readonly dispelCategory?: DispelCategory;
   readonly dispelPriority?: number;
   readonly modifiers?: readonly AuraModifier[];
@@ -309,14 +319,25 @@ export function applyAura(
   const maxStacks = boundedPositiveInteger(definition.maxStacks, 1);
   const requestedStacks = Math.min(maxStacks, boundedPositiveInteger(request.stacks, 1));
   const instanceId = auraIdentity(definition, request.sourceId, request.targetId);
-  const existingIndex = current.findIndex((aura) => aura.instanceId === instanceId);
+  const exclusive = definition.exclusiveGroup
+    ? current.filter((aura) => (
+        aura.targetId === request.targetId
+        && aura.definition.exclusiveGroup === definition.exclusiveGroup
+        && aura.instanceId !== instanceId
+      ))
+    : [];
+  const exclusiveIds = new Set(exclusive.map((aura) => aura.instanceId));
+  const base = exclusiveIds.size > 0
+    ? current.filter((aura) => !exclusiveIds.has(aura.instanceId))
+    : current;
+  const existingIndex = base.findIndex((aura) => aura.instanceId === instanceId);
 
   if (existingIndex < 0) {
     const aura = makeAura(request, requestedStacks);
-    return { auras: [...current, aura], aura };
+    return { auras: [...base, aura], aura, ...(exclusive[0] ? { replaced: exclusive[0] } : {}) };
   }
 
-  const existing = current[existingIndex];
+  const existing = base[existingIndex];
   const behavior = definition.stackBehavior ?? "refresh";
   const stacks = behavior === "add"
     ? Math.min(maxStacks, existing.stacks + requestedStacks)
@@ -333,7 +354,7 @@ export function applyAura(
         procStates: existing.procStates,
       }
     : replacement;
-  const auras = [...current];
+  const auras = [...base];
   auras[existingIndex] = aura;
   return { auras, aura, replaced: existing };
 }

src/game/combatEvents.ts

@@ -0,0 +1,49 @@
+import type { DamageSchool } from "./combatAuras";
+
+export type StructuredCombatEventKind =
+  | "damage"
+  | "healing"
+  | "absorb"
+  | "resource"
+  | "aura"
+  | "cast"
+  | "interrupt"
+  | "death"
+  | "resurrection";
+
+export interface StructuredCombatEvent {
+  readonly id: number;
+  readonly occurredAt: number;
+  readonly kind: StructuredCombatEventKind;
+  readonly sourceActorId: string;
+  readonly targetActorId: string;
+  readonly abilityId?: string;
+  readonly school?: DamageSchool;
+  readonly rawAmount: number;
+  readonly effectiveAmount: number;
+  readonly overheal: number;
+  readonly absorbed: number;
+  readonly critical: boolean;
+  readonly outcome?: string;
+}
+export type CombatEventInput = Omit<StructuredCombatEvent, "id">;
+
+export const MAX_COMBAT_EVENT_HISTORY = 200;
+
+export function appendCombatEvent(
+  events: readonly StructuredCombatEvent[],
+  event: CombatEventInput,
+  id: number,
+  maximum = MAX_COMBAT_EVENT_HISTORY,
+): readonly StructuredCombatEvent[] {
+  const next = Object.freeze({
+    ...event,
+    id,
+    occurredAt: Math.max(0, Number.isFinite(event.occurredAt) ? event.occurredAt : 0),
+    rawAmount: Math.max(0, Number.isFinite(event.rawAmount) ? event.rawAmount : 0),
+    effectiveAmount: Math.max(0, Number.isFinite(event.effectiveAmount) ? event.effectiveAmount : 0),
+    overheal: Math.max(0, Number.isFinite(event.overheal) ? event.overheal : 0),
+    absorbed: Math.max(0, Number.isFinite(event.absorbed) ? event.absorbed : 0),
+  });
+  return Object.freeze([...events, next].slice(-Math.max(1, Math.trunc(maximum))));
+}

src/game/combatHealing.test.ts

@@ -0,0 +1,18 @@
+import { describe, expect, it } from "vitest";
+import { resolveHealing } from "./combatHealing";
+
+describe("combat healing resolution", () => {
+  it("reports critical raw healing, effective healing, and overheal independently", () => {
+    expect(resolveHealing(100, 950, 1_000, 0.25, 0.1)).toEqual({
+      rawAmount: 150,
+      effectiveAmount: 50,
+      overheal: 100,
+      critical: true,
+    });
+  });
+
+  it("does not resurrect a zero-health actor implicitly", () => {
+    const result = resolveHealing(100, 0, 1_000, 0, 1);
+    expect(result).toMatchObject({ rawAmount: 100, effectiveAmount: 100, overheal: 0, critical: false });
+  });
+});

src/game/combatHealing.ts

@@ -0,0 +1,28 @@
+export interface HealingResolution {
+  readonly rawAmount: number;
+  readonly effectiveAmount: number;
+  readonly overheal: number;
+  readonly critical: boolean;
+}
+export function resolveHealing(
+  amount: number,
+  currentHealth: number,
+  maximumHealth: number,
+  criticalChance = 0,
+  roll = 1,
+  criticalMultiplier = 1.5,
+): HealingResolution {
+  const critical = Number.isFinite(roll) && roll < Math.max(0, Math.min(1, criticalChance));
+  const rawAmount = Math.max(0, Math.round(
+    (Number.isFinite(amount) ? amount : 0) * (critical ? Math.max(1, criticalMultiplier) : 1),
+  ));
+  const missing = Math.max(0, (Number.isFinite(maximumHealth) ? maximumHealth : 0)
+    - (Number.isFinite(currentHealth) ? currentHealth : 0));
+  const effectiveAmount = Math.min(rawAmount, missing);
+  return Object.freeze({
+    rawAmount,
+    effectiveAmount,
+    overheal: rawAmount - effectiveAmount,
+    critical,
+  });
+}

src/game/combatResources.test.ts

@@ -0,0 +1,47 @@
+import { describe, expect, it } from "vitest";
+import { createDeathKnightRunes, normalizeActorResourcePool } from "./combatActors";
+import {
+  activateDeathKnightRunes,
+  advanceCombatResourcePool,
+  spendDeathKnightRunes,
+} from "./combatResources";
+
+describe("authentic combat resources", () => {
+  it("suppresses spirit mana regeneration for five seconds after spending", () => {
+    const mana = normalizeActorResourcePool("mana", 50, 100, 12, 1_000);
+    const insideRule = advanceCombatResourcePool(mana, {
+      inCombat: true,
+      actorLevel: 80,
+      now: 5_999,
+      deltaSeconds: 1,
+      manaSpiritRegenerationPerSecond: 8,
+    });
+    const outsideRule = advanceCombatResourcePool(mana, {
+      inCombat: true,
+      actorLevel: 80,
+      now: 6_000,
+      deltaSeconds: 1,
+      manaSpiritRegenerationPerSecond: 8,
+    });
+    expect(insideRule.current).toBe(54);
+    expect(outsideRule.current).toBe(62);
+  });
+
+  it("decays rage and runic power only out of combat", () => {
+    const rage = normalizeActorResourcePool("rage", 20, 100);
+    const runic = normalizeActorResourcePool("runic-power", 20, 100);
+    expect(advanceCombatResourcePool(rage, { inCombat: false, actorLevel: 80, now: 1, deltaSeconds: 1 }).current).toBe(17);
+    expect(advanceCombatResourcePool(runic, { inCombat: false, actorLevel: 80, now: 1, deltaSeconds: 1 }).current).toBe(17.5);
+    expect(advanceCombatResourcePool(rage, { inCombat: true, actorLevel: 80, now: 1, deltaSeconds: 1 }).current).toBe(20);
+  });
+
+  it("recharges six Death Knight runes independently", () => {
+    const initial = createDeathKnightRunes();
+    const first = spendDeathKnightRunes(initial, { frost: 1, unholy: 1 }, 1_000)!;
+    expect(first).toHaveLength(6);
+    expect(first.filter((rune) => rune.readyAt === 11_000)).toHaveLength(2);
+    expect(spendDeathKnightRunes(first, { frost: 2 }, 1_001)).toBeNull();
+    const activated = activateDeathKnightRunes(first, 1);
+    expect(activated.filter((rune) => rune.readyAt === 0)).toHaveLength(5);
+  });
+});

src/game/combatResources.ts

@@ -0,0 +1,89 @@
+import {
+  createDeathKnightRunes,
+  type CombatResourcePoolState,
+  type DeathKnightRuneState,
+  type DeathKnightRuneType,
+} from "./combatActors";
+
+export const MANA_FIVE_SECOND_RULE_MS = 5_000;
+export const DEATH_KNIGHT_RUNE_RECHARGE_MS = 10_000;
+
+export interface CombatResourceAdvanceRules {
+  readonly inCombat: boolean;
+  readonly actorLevel: number;
+  readonly now: number;
+  readonly deltaSeconds: number;
+  readonly manaSpiritRegenerationPerSecond?: number;
+}
+export function advanceCombatResourcePool(
+  pool: CombatResourcePoolState,
+  rules: CombatResourceAdvanceRules,
+): CombatResourcePoolState {
+  const delta = Math.max(0, Math.min(1, Number.isFinite(rules.deltaSeconds) ? rules.deltaSeconds : 0));
+  let rate = pool.regenerationPerSecond;
+  if (pool.id === "mana" && rules.now - pool.lastSpentAt < MANA_FIVE_SECOND_RULE_MS) {
+    rate = Math.max(0, rate - Math.max(0, rules.manaSpiritRegenerationPerSecond ?? 0));
+  }
+  if ((pool.id === "rage" || pool.id === "runic-power") && !rules.inCombat) {
+    rate = pool.id === "rage" ? -3 : -2.5;
+  }
+  return Object.freeze({
+    ...pool,
+    current: Math.max(0, Math.min(pool.maximum, pool.current + rate * delta)),
+  });
+}
+
+export interface RuneCost {
+  readonly blood?: number;
+  readonly frost?: number;
+  readonly unholy?: number;
+}
+
+export function availableDeathKnightRunes(
+  runes: readonly DeathKnightRuneState[],
+  now: number,
+): readonly DeathKnightRuneState[] {
+  return runes.filter((rune) => rune.readyAt <= now);
+}
+
+function runeMatches(rune: DeathKnightRuneState, type: Exclude<DeathKnightRuneType, "death">): boolean {
+  return rune.type === type || rune.type === "death";
+}
+
+export function spendDeathKnightRunes(
+  runes: readonly DeathKnightRuneState[] | undefined,
+  cost: RuneCost,
+  now: number,
+  rechargeMs = DEATH_KNIGHT_RUNE_RECHARGE_MS,
+): readonly DeathKnightRuneState[] | null {
+  const current = runes?.length === 6 ? [...runes] : [...createDeathKnightRunes(now)];
+  const spent = new Set<number>();
+  for (const type of ["blood", "frost", "unholy"] as const) {
+    const count = Math.max(0, Math.trunc(cost[type] ?? 0));
+    for (let index = 0; index < count; index += 1) {
+      const candidate = current.find((rune) => (
+        !spent.has(rune.slot) && rune.readyAt <= now && runeMatches(rune, type)
+      ));
+      if (!candidate) return null;
+      spent.add(candidate.slot);
+    }
+  }
+  return Object.freeze(current.map((rune) => spent.has(rune.slot)
+    ? Object.freeze({ ...rune, readyAt: now + Math.max(1, rechargeMs) })
+    : rune));
+}
+
+export function activateDeathKnightRunes(
+  runes: readonly DeathKnightRuneState[],
+  count: number,
+): readonly DeathKnightRuneState[] {
+  let remaining = Math.max(0, Math.trunc(count));
+  return Object.freeze([...runes]
+    .sort((left, right) => right.readyAt - left.readyAt || left.slot - right.slot)
+    .map((rune) => {
+      if (remaining <= 0 || rune.readyAt <= 0) return rune;
+      remaining -= 1;
+      return Object.freeze({ ...rune, readyAt: 0 });
+    })
+    .sort((left, right) => left.slot - right.slot));
+}

src/game/combatRuntimeCatalog.test.ts

@@ -1,9 +1,14 @@
 import { describe, expect, it } from "vitest";
 import { CLASSES, type ClassId } from "../app/characterCatalog";
-import { COA_ABILITIES_BY_CLASS, COA_CLASS_RESOURCES } from "./coaAbilityCatalog";
+import {
+  COA_ABILITIES_BY_CLASS,
+  COA_CLASS_RESOURCES,
+  COA_TRIGGERED_ABILITIES_BY_SPELL_ID,
+} from "./coaAbilityCatalog";
 import {
   COA_RUNTIME_ABILITIES_BY_CLASS,
   COA_RUNTIME_CLASS_RESOURCES,
+  COA_RUNTIME_TRIGGERED_ABILITIES_BY_SPELL_ID,
 } from "./coaAbilityRuntimeCatalog";
 import generatedTalentRuntime from "./generated/talentRuntimeCatalog.json";
 import {
@@ -21,6 +26,7 @@ describe("compact combat runtime catalogs", () => {
   it("preserves every derived COA ability and resource profile", () => {
     expect(COA_RUNTIME_ABILITIES_BY_CLASS).toEqual(COA_ABILITIES_BY_CLASS);
     expect(COA_RUNTIME_CLASS_RESOURCES).toEqual(COA_CLASS_RESOURCES);
+    expect(COA_RUNTIME_TRIGGERED_ABILITIES_BY_SPELL_ID).toEqual(COA_TRIGGERED_ABILITIES_BY_SPELL_ID);
   });
 
   it("preserves every talent field used by runtime allocation and modifiers", () => {

src/game/combatSpatial.test.ts

@@ -0,0 +1,33 @@
+import { afterEach, describe, expect, it } from "vitest";
+import {
+  combatHasLineOfSight,
+  isPositionInFacingArc,
+  isSourceBehindTarget,
+  projectCombatGroundPoint,
+  registerCombatSpatialProvider,
+  resetCombatSpatialProvider,
+} from "./combatSpatial";
+
+describe("renderer-independent combat spatial queries", () => {
+  afterEach(resetCombatSpatialProvider);
+
+  it("validates facing and behind arcs", () => {
+    const actor = { id: "actor", position: [0, 0, 0] as const, yaw: 0 };
+    expect(isPositionInFacingArc(actor, [0, 0, 5])).toBe(true);
+    expect(isPositionInFacingArc(actor, [0, 0, -5])).toBe(false);
+    expect(isSourceBehindTarget([0, 0, -2], actor)).toBe(true);
+    expect(isSourceBehindTarget([0, 0, 2], actor)).toBe(false);
+  });
+
+  it("delegates line of sight and collision-safe ground projection", () => {
+    registerCombatSpatialProvider({
+      actor: () => null,
+      hasLineOfSight: (_source, target) => target[0] >= 0,
+      projectGroundPoint: (requested) => requested[1] > 5 ? null : [requested[0], 0, requested[2]],
+    });
+    expect(combatHasLineOfSight([0, 0, 0], [2, 0, 0])).toBe(true);
+    expect(combatHasLineOfSight([0, 0, 0], [-2, 0, 0])).toBe(false);
+    expect(projectCombatGroundPoint([2, 3, 4], 10)).toEqual([2, 0, 4]);
+    expect(projectCombatGroundPoint([2, 8, 4], 10)).toBeNull();
+  });
+});

src/game/combatSpatial.ts

@@ -0,0 +1,86 @@
+export type CombatSpatialPosition = readonly [x: number, y: number, z: number];
+
+export interface CombatSpatialActorSnapshot {
+  readonly id: string;
+  readonly position: CombatSpatialPosition;
+  /** World-space yaw in radians; +Z is forward. */
+  readonly yaw: number;
+}
+
+export interface CombatSpatialProvider {
+  readonly actor: (actorId: string) => CombatSpatialActorSnapshot | null;
+  readonly hasLineOfSight: (
+    source: CombatSpatialPosition,
+    target: CombatSpatialPosition,
+  ) => boolean;
+  readonly projectGroundPoint: (
+    requested: CombatSpatialPosition,
+    maximumDistance: number,
+    origin?: CombatSpatialPosition,
+  ) => CombatSpatialPosition | null;
+}
+
+let provider: CombatSpatialProvider | null = null;
+
+/** Registers the loaded dungeon's read-only spatial query seam. */
+export function registerCombatSpatialProvider(next: CombatSpatialProvider): () => void {
+  provider = next;
+  return () => {
+    if (provider === next) provider = null;
+  };
+}
+
+export function resetCombatSpatialProvider(): void {
+  provider = null;
+}
+
+export function combatSpatialActor(actorId: string): CombatSpatialActorSnapshot | null {
+  return provider?.actor(actorId) ?? null;
+}
+
+export function combatHasLineOfSight(
+  source: CombatSpatialPosition,
+  target: CombatSpatialPosition,
+): boolean {
+  return provider?.hasLineOfSight(source, target) ?? true;
+}
+
+export function projectCombatGroundPoint(
+  requested: CombatSpatialPosition,
+  maximumDistance: number,
+  origin?: CombatSpatialPosition,
+): CombatSpatialPosition | null {
+  if (!requested.every(Number.isFinite) || !Number.isFinite(maximumDistance) || maximumDistance < 0) return null;
+  return provider ? provider.projectGroundPoint(requested, maximumDistance, origin) : requested;
+}
+
+function normalizedPlanarDirection(
+  from: CombatSpatialPosition,
+  to: CombatSpatialPosition,
+): readonly [number, number] | null {
+  const dx = to[0] - from[0];
+  const dz = to[2] - from[2];
+  const length = Math.hypot(dx, dz);
+  return length > 1e-5 ? [dx / length, dz / length] : null;
+}
+
+export function isPositionInFacingArc(
+  source: CombatSpatialActorSnapshot,
+  target: CombatSpatialPosition,
+  arcRadians = Math.PI,
+): boolean {
+  const direction = normalizedPlanarDirection(source.position, target);
+  if (!direction) return true;
+  const forwardX = Math.sin(source.yaw);
+  const forwardZ = Math.cos(source.yaw);
+  const cosine = forwardX * direction[0] + forwardZ * direction[1];
+  return cosine >= Math.cos(Math.max(0, Math.min(Math.PI * 2, arcRadians)) / 2);
+}
+
+export function isSourceBehindTarget(
+  source: CombatSpatialPosition,
+  target: CombatSpatialActorSnapshot,
+  rearArcRadians = Math.PI,
+): boolean {
+  return !isPositionInFacingArc(target, source, Math.PI * 2 - rearArcRadians);
+}

src/game/combatStore.test.ts

@@ -12,6 +12,7 @@ import {
   EMPTY_CORPSE_DESPAWN_MS,
   MINIMUM_CORPSE_VISIBLE_MS,
   MOB_WOUND_ANIMATION_COOLDOWN_MS,
+  PLAYER_AURA_ENTITY_ID,
   selectedMob,
   useCombatStore,
 } from "./combatStore";
@@ -90,7 +91,7 @@ describe("combat store", () => {
     expect(useCombatStore.getState().mobs.ravager.health).toBe(100);
     useCombatStore.getState().tick(0.1, 2500);
     expect(useCombatStore.getState().mobs.ravager.health).toBeLessThan(100);
-    expect(useCombatStore.getState().resource).toBe(startingResource - 14);
+    expect(useCombatStore.getState().resource).toBe(startingResource - Math.round(startingResource * 0.14));
     expect(useCombatStore.getState().activeCast).toBeNull();
     expect(useCombatStore.getState().mobs.ravager.engaged).toBe(true);
   });
@@ -950,7 +951,7 @@ describe("combat store", () => {
     expect(useCombatStore.getState().castSlot(0, undefined, 10_000).ok).toBe(true);
     const boltCompletion = useCombatStore.getState().activeCast!.completesAt;
     useCombatStore.getState().tick(0.1, boltCompletion);
-    expect(useCombatStore.getState().resource).toBe(startingMana - 9);
+    expect(useCombatStore.getState().resource).toBe(startingMana - Math.round(startingMana * 0.1 * 0.85));
   });
 
   it("routes a cast-time direct heal to the selected living party member", () => {
@@ -972,6 +973,154 @@ describe("combat store", () => {
     expect(useCombatStore.getState().selectedTargetId).toBe("hostile-selection");
   });
 
+  it("fully heals the selected ally with Lay on Hands and starts its cooldown", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "paladin", level: 10 });
+    usePartyStore.getState().initializeParty("lay-on-hands-test", 10, useCombatStore.getState().health);
+    const memberId = preparePartyMember(0, [10, 0, 0], 1, true);
+    const memberBefore = usePartyStore.getState().members.find((member) => member.id === memberId)!;
+
+    expect(useCombatStore.getState().castAbility(
+      "wow335-paladin-lay-on-hands",
+      [0, 0, 0],
+      1_000,
+    )).toMatchObject({
+      ok: true,
+      healing: memberBefore.maxHealth - 1,
+    });
+    expect(usePartyStore.getState().members.find((member) => member.id === memberId)?.health)
+      .toBe(memberBefore.maxHealth);
+    expect(useCombatStore.getState().cooldowns["wow335-paladin-lay-on-hands"])
+      .toBe(1_201_000);
+    expect(useCombatStore.getState().castAbility(
+      "wow335-paladin-lay-on-hands",
+      [0, 0, 0],
+      2_500,
+    )).toMatchObject({ ok: false, reason: "cooldown" });
+  });
+
+  it("makes the selected ally immune to physical attacks with Hand of Protection", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "paladin", level: 10 });
+    usePartyStore.getState().initializeParty("hand-of-protection-test", 10, useCombatStore.getState().health);
+    const memberId = preparePartyMember(0, [0, 0, 0], 1, true);
+    const memberBefore = usePartyStore.getState().members.find((member) => member.id === memberId)!;
+
+    expect(useCombatStore.getState().castAbility(
+      "wow335-paladin-hand-of-protection",
+      [0, 0, 0],
+      1_000,
+    )).toMatchObject({ ok: true });
+    expect(useCombatStore.getState().auras).toContainEqual(expect.objectContaining({
+      targetId: memberId,
+      expiresAt: 7_000,
+      definition: expect.objectContaining({ name: expect.stringContaining("Hand of Protection") }),
+    }));
+    expect(useCombatStore.getState().cooldowns["wow335-paladin-hand-of-protection"])
+      .toBe(301_000);
+
+    useCombatStore.getState().registerMob("party-victim", {
+      name: "Party victim",
+      maxHealth: 200,
+      xpReward: 0,
+    });
+    setMobPosition("party-victim", [2, 0, 0]);
+    useCombatStore.getState().damageMob("party-victim", 5, 1_000, {
+      actorId: memberId,
+      role: "tank",
+    });
+
+    expect(useCombatStore.getState().advanceMobCombat(1_450)).toBe(0);
+    expect(usePartyStore.getState().members.find((member) => member.id === memberId)?.health)
+      .toBe(memberBefore.health);
+  });
+
+  it("clears roots with Hand of Freedom and replaces mutually exclusive seals", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "paladin", level: 80 });
+    usePartyStore.getState().initializeParty("paladin-aura-test", 80, useCombatStore.getState().health);
+    const memberId = preparePartyMember(0, [0, 0, 0], Number.MAX_SAFE_INTEGER, true);
+    usePartyStore.getState().controlMember(memberId, "root", 30_000);
+
+    expect(useCombatStore.getState().castAbility("wow335-paladin-hand-of-freedom", [0, 0, 0], 1_000).ok).toBe(true);
+    expect(usePartyStore.getState().members.find((member) => member.id === memberId)).toMatchObject({
+      controlledUntil: 0,
+      controlMechanic: null,
+    });
+
+    usePartyStore.getState().selectSelf();
+    expect(useCombatStore.getState().castAbility("wow335-paladin-seal-of-righteousness", [0, 0, 0], 3_000).ok).toBe(true);
+    expect(useCombatStore.getState().castAbility("wow335-paladin-seal-of-wisdom", [0, 0, 0], 5_000).ok).toBe(true);
+    const seals = useCombatStore.getState().auras.filter((aura) => (
+      aura.targetId === PLAYER_AURA_ENTITY_ID && aura.definition.exclusiveGroup === "paladin:seal"
+    ));
+    expect(seals).toHaveLength(1);
+    expect(seals[0].definition.name).toContain("Seal of Wisdom");
+  });
+
+  it("redirects Hand of Sacrifice damage to the paladin", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "paladin", level: 80 });
+    usePartyStore.getState().initializeParty("hand-of-sacrifice-test", 80, useCombatStore.getState().health);
+    const memberId = preparePartyMember(0, [0, 0, 0], Number.MAX_SAFE_INTEGER, true);
+    const memberBefore = usePartyStore.getState().members.find((member) => member.id === memberId)!;
+    const playerBefore = useCombatStore.getState().health;
+
+    expect(useCombatStore.getState().castAbility("wow335-paladin-hand-of-sacrifice", [0, 0, 0], 1_000).ok).toBe(true);
+    useCombatStore.getState().registerMob("sacrifice-attacker", { name: "Sacrifice attacker", maxHealth: 200, xpReward: 0 });
+    setMobPosition("sacrifice-attacker", [2, 0, 0]);
+    useCombatStore.getState().damageMob("sacrifice-attacker", 5, 1_000, { actorId: memberId, role: "tank" });
+    expect(useCombatStore.getState().advanceMobCombat(1_450)).toBeGreaterThan(0);
+
+    const memberLoss = memberBefore.health - usePartyStore.getState().members.find((member) => member.id === memberId)!.health;
+    const playerLoss = playerBefore - useCombatStore.getState().health;
+    expect(memberLoss).toBeGreaterThan(0);
+    expect(playerLoss).toBeGreaterThan(0);
+    expect(playerLoss).toBeLessThan(memberLoss);
+  });
+
+  it("taunts up to three attackers off an ally with Righteous Defense", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "paladin", level: 80 });
+    usePartyStore.getState().initializeParty("righteous-defense-test", 80, useCombatStore.getState().health);
+    const memberId = preparePartyMember(0, [0, 0, 0], Number.MAX_SAFE_INTEGER, true);
+    for (const id of ["attacker-a", "attacker-b", "attacker-c", "attacker-d"]) {
+      useCombatStore.getState().registerMob(id, { name: id, maxHealth: 100, xpReward: 0 });
+      setMobPosition(id, [2, 0, 0]);
+    }
+    useCombatStore.setState((state) => ({
+      mobs: Object.fromEntries(Object.entries(state.mobs).map(([id, mob]) => [id, {
+        ...mob,
+        engaged: true,
+        targetActorId: memberId,
+        threatByActor: { [memberId]: 10 },
+      }])),
+    }));
+
+    expect(useCombatStore.getState().castAbility("wow335-paladin-righteous-defense", [0, 0, 0], 1_000).ok).toBe(true);
+    expect(Object.values(useCombatStore.getState().mobs).filter((mob) => mob.forcedTarget?.actorId === PLAYER_AURA_ENTITY_ID)).toHaveLength(3);
+  });
+
+  it("channels party-wide classic healing without requiring an enemy target", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "priest", level: 80 });
+    usePartyStore.getState().initializeParty("divine-hymn-test", 80, useCombatStore.getState().health);
+    const memberId = preparePartyMember(0, [4, 0, 0], 1);
+    useCombatStore.getState().damagePlayer(500);
+    const playerBefore = useCombatStore.getState().health;
+
+    expect(useCombatStore.getState().castAbility("wow335-priest-divine-hymn", [0, 0, 0], 1_000).ok).toBe(true);
+    const completion = useCombatStore.getState().activeCast?.completesAt;
+    if (completion) useCombatStore.getState().tick(1, completion);
+    expect(useCombatStore.getState().activeCast).toBeNull();
+    expect(useCombatStore.getState().health).toBeGreaterThan(playerBefore);
+    expect(usePartyStore.getState().members.find((member) => member.id === memberId)!.health).toBeGreaterThan(1);
+  });
+
+  it("executes intentional classic utility spells instead of rejecting them", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "mage", level: 80 });
+    useCombatStore.getState().damagePlayer(500);
+    const before = useCombatStore.getState().health;
+    expect(useCombatStore.getState().castAbility("wow335-mage-conjure-food", [0, 0, 0], 1_000).ok).toBe(true);
+    const completion = useCombatStore.getState().activeCast?.completesAt;
+    if (completion) useCombatStore.getState().tick(1, completion);
+    expect(useCombatStore.getState().health).toBeGreaterThan(before);
+  });
+
   it("falls back to the player and snapshots an explicit null friendly target", () => {
     registerTarget("enemy", [10, 0, 0], 100, 0);
     const memberId = preparePartyMember(0, [8, 0, 0], 1);

src/game/deathRespawn.test.ts

@@ -24,7 +24,7 @@ describe("death respawn", () => {
     useCombatStore.getState().selectMob("respawn-pack:a");
     useCombatStore.getState().damageMob("respawn-pack:a", 1, 1000);
     expect(useCombatStore.getState().castAbility("priest-psychic-scream", [10, -50, 20], 2000).ok).toBe(true);
-    expect(useCombatStore.getState().resource).toBe(startingResource - 15);
+    expect(useCombatStore.getState().resource).toBe(startingResource - Math.round(startingResource * 0.15));
 
     const revisionBefore = useGameStore.getState().resetRevision;
     useWailingEncounterStore.setState({ phase: "mutanus", phaseStartedAt: 5_000 });

src/game/dungeonCombatFidelity.test.ts

@@ -0,0 +1,105 @@
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
+import { PLAYER_AGGRO_ID } from "./aggro";
+import { useCombatStore } from "./combatStore";
+import { registerCombatSpatialProvider, resetCombatSpatialProvider } from "./combatSpatial";
+import { clearMobRuntimeRegistry, getMobPosition, setMobPosition } from "./mobRuntimeRegistry";
+import { clearPartyRuntimeRegistry, registerPartyRuntimePosition } from "./partyRuntimeRegistry";
+import { usePartyStore } from "./partyStore";
+
+function registerTarget(id = "target", position: readonly [number, number, number] = [0, 0, 10]) {
+  useCombatStore.getState().registerMob(id, { name: id, maxHealth: 1_000, xpReward: 0 });
+  setMobPosition(id, position);
+  useCombatStore.getState().selectMob(id);
+}
+
+describe("dungeon combat fidelity integration", () => {
+  beforeEach(() => {
+    resetCombatSpatialProvider();
+    clearMobRuntimeRegistry();
+    clearPartyRuntimeRegistry();
+    useCombatStore.getState().initializeCharacter({ classId: "mage", level: 10 });
+    useCombatStore.getState().setPlayerPosition([0, 0, 0]);
+    usePartyStore.getState().initializeParty("fidelity", 10, useCombatStore.getState().health);
+  });
+  afterEach(resetCombatSpatialProvider);
+
+  it("rejects obstructed and rear-arc hostile casts while friendly healing ignores facing", () => {
+    registerTarget();
+    let blocked = true;
+    registerCombatSpatialProvider({
+      actor: (id) => id === PLAYER_AGGRO_ID
+        ? { id, position: [0, 0, 0], yaw: Math.PI }
+        : { id, position: getMobPosition(id) ?? [0, 0, 0], yaw: 0 },
+      hasLineOfSight: () => !blocked,
+      projectGroundPoint: (point) => point,
+    });
+    expect(useCombatStore.getState().castAbility("mage-frostbolt", { now: 1_000 })).toMatchObject({ ok: false, reason: "line-of-sight" });
+    blocked = false;
+    expect(useCombatStore.getState().castAbility("mage-frostbolt", { now: 1_000 })).toMatchObject({ ok: false, reason: "not-facing" });
+
+    useCombatStore.getState().initializeCharacter({ classId: "priest", level: 10 });
+    const ally = usePartyStore.getState().members[0];
+    registerPartyRuntimePosition(ally.id, [0, 0, 10]);
+    usePartyStore.getState().selectMember(ally.id);
+    usePartyStore.setState((state) => ({ members: state.members.map((member) => member.id === ally.id ? { ...member, health: 1 } : member) }));
+    const friendlyResult = useCombatStore.getState().castAbility("wow335-priest-lesser-heal", { now: 2_000 });
+    expect(friendlyResult.reason).toBeUndefined();
+  });
+
+  it("applies only the first two direct-damage pushbacks and ignores fully absorbed hits", () => {
+    registerTarget();
+    expect(useCombatStore.getState().castAbility("mage-frostbolt", { now: 1_000 }).ok).toBe(true);
+    const original = useCombatStore.getState().activeCast!.completesAt;
+    useCombatStore.getState().damagePlayer(1);
+    useCombatStore.getState().damagePlayer(1);
+    useCombatStore.getState().damagePlayer(1);
+    expect(useCombatStore.getState().activeCast).toMatchObject({ completesAt: original + 1_000, pushbackHits: 2 });
+
+    useCombatStore.getState().cancelCast();
+    useCombatStore.setState({ globalCooldownEndsAt: 0, shield: 10_000, shieldExpiresAt: Number.MAX_SAFE_INTEGER });
+    expect(useCombatStore.getState().castAbility("mage-frostbolt", { now: 5_000 }).ok).toBe(true);
+    const absorbedOriginal = useCombatStore.getState().activeCast!.completesAt;
+    useCombatStore.getState().damagePlayer(100);
+    expect(useCombatStore.getState().activeCast!.completesAt).toBe(absorbedOriginal);
+  });
+
+  it("creates persistent collision-safe ground effects and dynamically ticks actors in their radius", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "paladin", level: 80 });
+    registerTarget("late-target", [20, 0, 0]);
+    registerCombatSpatialProvider({
+      actor: (id) => ({ id, position: id === PLAYER_AGGRO_ID ? [0, 0, 0] : getMobPosition(id) ?? [0, 0, 0], yaw: 0 }),
+      hasLineOfSight: () => true,
+      projectGroundPoint: (point) => [point[0], 0, point[2]],
+    });
+    const groundResult = useCombatStore.getState().castAbility("paladin-consecration", { now: 1_000, groundPosition: [0, 3, 0] });
+    expect(groundResult.reason).toBeUndefined();
+    expect(useCombatStore.getState().areaEffects).toHaveLength(1);
+    setMobPosition("late-target", [2, 0, 0]);
+    const before = useCombatStore.getState().mobs["late-target"].health;
+    useCombatStore.getState().tick(1, 2_000);
+    expect(useCombatStore.getState().mobs["late-target"].health).toBeLessThan(before);
+  });
+
+  it("spends independent Death Knight runes and exposes every combatant through actor snapshots", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "death-knight", level: 10 });
+    registerTarget("rune-target", [0, 0, 10]);
+    expect(useCombatStore.getState().castAbility("death-knight-icy-touch", { now: 1_000 }).ok).toBe(true);
+    expect(useCombatStore.getState().deathKnightRunes.filter((rune) => rune.readyAt > 1_000)).toHaveLength(1);
+    useCombatStore.getState().synchronizeActors();
+    const actors = useCombatStore.getState().actors;
+    expect(actors[PLAYER_AGGRO_ID].runes).toHaveLength(6);
+    expect(actors["rune-target"].kind).toBe("enemy");
+    for (const member of usePartyStore.getState().members) expect(actors[member.id].kind).toBe("companion");
+  });
+
+  it("emits structured effective damage and healing records", () => {
+    registerTarget("event-target", [0, 0, 10]);
+    useCombatStore.getState().damageMob("event-target", 25, 1_000);
+    useCombatStore.getState().damagePlayer(10);
+    useCombatStore.getState().healPlayer(100);
+    const events = useCombatStore.getState().combatEvents;
+    expect(events.some((event) => event.kind === "damage" && event.targetActorId === "event-target" && event.effectiveAmount > 0)).toBe(true);
+    expect(events.some((event) => event.kind === "healing" && event.overheal >= 0)).toBe(true);
+    expect(events.every((event) => event.rawAmount >= event.effectiveAmount)).toBe(true);
+  });
+});

src/game/dungeonCombatFidelityExtended.test.ts

@@ -0,0 +1,195 @@
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
+import { abilitiesForClass, abilityAtLevel, abilityById, type AbilityDefinition } from "./abilityCatalog";
+import { PLAYER_AGGRO_ID } from "./aggro";
+import { useCombatStore } from "./combatStore";
+import { registerCombatSpatialProvider, resetCombatSpatialProvider } from "./combatSpatial";
+import { targetingRulesForAbility } from "./abilityRules";
+import { clearMobRuntimeRegistry, getMobPosition, setMobPosition } from "./mobRuntimeRegistry";
+import { clearPartyRuntimeRegistry } from "./partyRuntimeRegistry";
+import { usePartyStore } from "./partyStore";
+
+function registerMob(id: string, position: readonly [number, number, number], boss = false): void {
+  useCombatStore.getState().registerMob(id, { name: id, maxHealth: 10_000, xpReward: 0, boss });
+  setMobPosition(id, position);
+}
+
+describe("extended dungeon combat fidelity", () => {
+  beforeEach(() => {
+    resetCombatSpatialProvider();
+    clearMobRuntimeRegistry();
+    clearPartyRuntimeRegistry();
+    useCombatStore.getState().initializeCharacter({ classId: "priest", level: 80 });
+    useCombatStore.getState().setPlayerPosition([0, 0, 0]);
+    usePartyStore.getState().initializeParty("actor-authority", 80, useCombatStore.getState().health);
+    useCombatStore.getState().synchronizeActors();
+  });
+
+  afterEach(resetCombatSpatialProvider);
+
+  it("keeps companion vitals authoritative when compatibility party records are stale", () => {
+    const member = usePartyStore.getState().members[0];
+    const actor = useCombatStore.getState().actors[member.id];
+    useCombatStore.setState((state) => ({
+      actors: { ...state.actors, [member.id]: { ...actor, health: 7, alive: true } },
+    }));
+    usePartyStore.setState((state) => ({
+      members: state.members.map((candidate) => candidate.id === member.id
+        ? { ...candidate, health: candidate.maxHealth }
+        : candidate),
+    }));
+
+    useCombatStore.getState().synchronizeActors();
+
+    expect(useCombatStore.getState().actors[member.id].health).toBe(7);
+    expect(usePartyStore.getState().members.find((candidate) => candidate.id === member.id)?.health).toBe(7);
+  });
+
+  it("binds combo points to the enemy that generated them", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "rogue", level: 20 });
+    registerMob("combo-a", [0, 0, 3]);
+    registerMob("combo-b", [1, 0, 2]);
+    useCombatStore.getState().selectMob("combo-a");
+    expect(useCombatStore.getState().castAbility("rogue-sinister-strike", { now: 1_000 }).ok).toBe(true);
+    expect(useCombatStore.getState()).toMatchObject({ comboPoints: 1, comboTargetId: "combo-a" });
+
+    useCombatStore.setState((state) => ({
+      globalCooldownEndsAt: 0,
+      cooldowns: {},
+      resource: state.maxResource,
+      resourcePools: { ...state.resourcePools, energy: state.maxResource },
+    }));
+    useCombatStore.getState().selectMob("combo-b");
+    const secondStrike = useCombatStore.getState().castAbility("rogue-sinister-strike", { now: 2_000 });
+    expect(secondStrike.ok, secondStrike.reason).toBe(true);
+    expect(useCombatStore.getState()).toMatchObject({ comboPoints: 1, comboTargetId: "combo-b" });
+  });
+
+  it("applies boss control and taunt diminishing returns through immunity", () => {
+    registerMob("dr-boss", [0, 0, 3], true);
+    const durations: number[] = [];
+    for (const now of [1_000, 2_000, 3_000]) {
+      expect(useCombatStore.getState().controlMob("dr-boss", `stun-${now}`, "stun", 8_000, now)).toBe(true);
+      const status = useCombatStore.getState().mobs["dr-boss"].statuses.find((entry) => entry.kind === "stun")!;
+      durations.push(status.endsAt - now);
+    }
+    expect(durations).toEqual([3_000, 1_500, 750]);
+    expect(useCombatStore.getState().controlMob("dr-boss", "stun-immune", "stun", 8_000, 4_000)).toBe(false);
+
+    const tauntDurations: number[] = [];
+    for (const now of [5_000, 6_000, 7_000]) {
+      expect(useCombatStore.getState().tauntMob("dr-boss", { actorId: PLAYER_AGGRO_ID, role: "tank" }, 3_000, now)).toBe(true);
+      tauntDurations.push(useCombatStore.getState().mobs["dr-boss"].forcedTarget!.endsAt - now);
+    }
+    expect(tauntDurations).toEqual([3_000, 1_950, 1_268]);
+    expect(useCombatStore.getState().tauntMob("dr-boss", { actorId: PLAYER_AGGRO_ID, role: "tank" }, 3_000, 8_000)).toBe(false);
+  });
+
+  it("moves and confirms a collision-projected ground reticle", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "mage", level: 80 });
+    const groundAbility = abilitiesForClass("mage")
+      .map((ability) => abilityAtLevel(ability, 80))
+      .find((ability) => targetingRulesForAbility(ability).shape === "ground" && ability.range.max > 1)!;
+    expect(groundAbility).toBeDefined();
+    registerCombatSpatialProvider({
+      actor: (id) => ({ id, position: [0, 0, 0], yaw: 0 }),
+      hasLineOfSight: () => true,
+      projectGroundPoint: (point, maximumDistance, origin = [0, 0, 0]) => {
+        const dx = point[0] - origin[0];
+        const dz = point[2] - origin[2];
+        const distance = Math.hypot(dx, dz);
+        const scale = distance > maximumDistance ? maximumDistance / distance : 1;
+        return [origin[0] + dx * scale, 0, origin[2] + dz * scale];
+      },
+    });
+    expect(useCombatStore.getState().beginGroundTarget(groundAbility.id)).toBe(true);
+    const before = useCombatStore.getState().pendingGroundTarget!;
+    expect(before.valid).toBe(true);
+    useCombatStore.getState().moveGroundTarget(1, 0, 0, 0.1);
+    const moved = useCombatStore.getState().pendingGroundTarget!;
+    expect(moved.position).not.toEqual(before.position);
+    expect(Math.hypot(moved.position[0], moved.position[2])).toBeLessThanOrEqual(moved.maximumRange);
+    expect(useCombatStore.getState().confirmGroundTarget(undefined, 1_000).ok).toBe(true);
+    expect(useCombatStore.getState().pendingGroundTarget).toBeNull();
+    const activeCast = useCombatStore.getState().activeCast;
+    if (activeCast) useCombatStore.getState().tick(0.1, activeCast.completesAt);
+    expect(useCombatStore.getState().areaEffects).toHaveLength(1);
+  });
+
+  it("keeps summons targetable, credits their owner, replaces totems, and expires them", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "rom-warden", raceId: "rom-elf", level: 20 });
+    useCombatStore.getState().synchronizeActors();
+    registerMob("summon-target", [0, 0, 3]);
+    useCombatStore.getState().selectMob("summon-target");
+    expect(useCombatStore.getState().castAbility("rom-warden-primary-1", { now: 1_000 }).ok).toBe(true);
+    useCombatStore.getState().tick(0.1, 5_000);
+    const summon = useCombatStore.getState().summons[0];
+    expect(summon).toBeDefined();
+    expect(useCombatStore.getState().actors[summon.id]).toMatchObject({ kind: "summon", ownerId: PLAYER_AGGRO_ID, alive: true });
+    expect(useCombatStore.getState().selectFriendlyActor(summon.id)).toBe(true);
+
+    const beforeDamage = summon.health;
+    expect(useCombatStore.getState().damageSummon(summon.id, 5)).toBe(5);
+    expect(useCombatStore.getState().actors[summon.id].health).toBe(beforeDamage - 5);
+    expect(useCombatStore.getState().healActor(summon.id, 5, { sourceActorId: PLAYER_AGGRO_ID }).effectiveAmount).toBe(5);
+
+    const baseAbility = abilityById("rom-warden-primary-1")!;
+    const combatSummonAbility: AbilityDefinition = { ...baseAbility, id: "test-guardian", name: "Test Guardian" };
+    useCombatStore.getState().summonActor(
+      PLAYER_AGGRO_ID,
+      combatSummonAbility,
+      { kind: "summon", creatureId: 2, coefficient: 0.5, durationMs: 10_000 },
+      [0, 0, 0],
+      "summon-target",
+      6_000,
+    );
+    useCombatStore.getState().tick(1, 7_500);
+    expect(useCombatStore.getState().mobs["summon-target"].threatByActor[PLAYER_AGGRO_ID]).toBeGreaterThan(0);
+    expect(useCombatStore.getState().mobs["summon-target"].threatByActor[summon.id] ?? 0).toBe(0);
+
+    const totemAbility: AbilityDefinition = { ...baseAbility, id: "test-totem", name: "Test Totem" };
+    const totemEffect = { kind: "summon" as const, creatureId: 1, coefficient: 0.2, durationMs: 10_000 };
+    useCombatStore.getState().summonActor(PLAYER_AGGRO_ID, totemAbility, totemEffect, [0, 0, 0], null, 8_000);
+    useCombatStore.getState().summonActor(PLAYER_AGGRO_ID, totemAbility, totemEffect, [1, 0, 0], null, 8_100);
+    expect(useCombatStore.getState().summons.filter((candidate) => candidate.exclusiveGroup === `${PLAYER_AGGRO_ID}:totem`)).toHaveLength(1);
+
+    useCombatStore.getState().tick(0.1, 20_001);
+    expect(useCombatStore.getState().summons.some((candidate) => candidate.id === summon.id)).toBe(false);
+    expect(useCombatStore.getState().actors[summon.id]).toBeUndefined();
+  });
+
+  it("executes damaging abilities from Classic, RuneWaker, and CoA catalogs through one runtime", () => {
+    const cases = [
+      { classId: "mage" as const, level: 20, source: "classic" },
+      { classId: "rom-mage" as const, level: 20, source: "runewaker" },
+      { classId: "stormbringer" as const, level: 60, source: "coa" },
+    ];
+    registerCombatSpatialProvider({
+      actor: (id) => ({ id, position: id === PLAYER_AGGRO_ID ? [0, 0, 0] : getMobPosition(id) ?? [0, 0, 0], yaw: 0 }),
+      hasLineOfSight: () => true,
+      projectGroundPoint: (point) => point,
+    });
+    for (const entry of cases) {
+      useCombatStore.getState().initializeCharacter({ classId: entry.classId, level: entry.level });
+      const ability = abilitiesForClass(entry.classId)
+        .map((candidate) => abilityAtLevel(candidate, entry.level))
+        .find((candidate) => (
+          !candidate.passive
+          && candidate.target === "hostile"
+          && candidate.talentEntryId === undefined
+          && candidate.effects.some((effect) => effect.kind === "damage")
+        ));
+      expect(ability, `${entry.source} executable damage ability`).toBeDefined();
+      const id = `${entry.source}-target`;
+      const range = Math.max(1, Math.min(10, ability!.range.max));
+      registerMob(id, [0, 0, range]);
+      useCombatStore.getState().selectMob(id);
+      const before = useCombatStore.getState().mobs[id].health;
+      const cast = useCombatStore.getState().castAbility(ability!.id, { now: 1_000 });
+      expect(cast.ok, `${entry.source} cast: ${cast.reason ?? "ok"}`).toBe(true);
+      const activeCast = useCombatStore.getState().activeCast;
+      if (activeCast) useCombatStore.getState().tick(0.1, activeCast.completesAt);
+      expect(useCombatStore.getState().mobs[id].health, `${entry.source} damage`).toBeLessThan(before);
+      clearMobRuntimeRegistry();
+    }
+  });
+});

src/game/enemyAttacks.ts

@@ -15,7 +15,7 @@ export type EnemyDamageSchool =
   | "shadow"
   | "holy";
 
-export type EnemyControlMechanic = "fear" | "sleep" | "root" | "stun";
+export type EnemyControlMechanic = "fear" | "sleep" | "root" | "stun" | "silence";
 
 export type EnemyAbilityEffect =
   | { readonly kind: "damage"; readonly multiplier: number }

src/game/inputManager.test.ts

@@ -48,6 +48,9 @@ function inputActionSpies(blocked = false): InputActions {
     setPartyCommand: vi.fn(),
     recallParty: vi.fn(),
     clearTarget: vi.fn(),
+    groundTargetActive: vi.fn(() => false),
+    confirmGroundTarget: vi.fn(),
+    cancelGroundTarget: vi.fn(),
     gameplayActionsBlocked: vi.fn(() => blocked),
     setCameraLookActive: vi.fn(),
     setInputMode: vi.fn(),
@@ -90,6 +93,24 @@ describe("gameplay input bindings", () => {
     dispose();
   });
 
+  it("confirms and cancels an active ground reticle before face-button casts", () => {
+    stubInputEventTargets();
+    const nextActions = inputActionSpies();
+    (nextActions.groundTargetActive as ReturnType<typeof vi.fn>).mockReturnValue(true);
+    const dispose = installInput(nextActions);
+
+    emitControllerToken({ token: "Button0", repeat: false, pressed: true });
+    emitControllerToken({ token: "Button0", repeat: false, pressed: false });
+    emitControllerToken({ token: "Button1", repeat: false, pressed: true });
+
+    expect(nextActions.confirmGroundTarget).toHaveBeenCalledTimes(1);
+    expect(nextActions.cancelGroundTarget).toHaveBeenCalledTimes(1);
+    expect(nextActions.lootActiveBoss).not.toHaveBeenCalled();
+    expect(nextActions.castActionBinding).not.toHaveBeenCalled();
+
+    dispose();
+  });
+
   it("maps Thor controls without stealing Select from display routing", () => {
     expect(controllerCommandForToken("Button9")).toBe("pause");
     expect(controllerCommandForToken("Button11")).toBe("target-next");

src/game/inputManager.ts

@@ -34,6 +34,9 @@ export interface InputActions {
   setPartyCommand: (command: PartyCommand) => void;
   recallParty: () => void;
   clearTarget: () => void;
+  groundTargetActive: () => boolean;
+  confirmGroundTarget: () => void;
+  cancelGroundTarget: () => void;
   gameplayActionsBlocked: () => boolean;
   setCameraLookActive: (active: boolean) => void;
   setInputMode: (mode: "keyboard" | "gamepad") => void;
@@ -246,6 +249,16 @@ export function installInput(nextActions: InputActions): () => void {
     if (!isPressed) return;
     nextActions.setInputMode("gamepad");
     if (repeat) return;
+    if (nextActions.groundTargetActive()) {
+      if (token === "Button0") {
+        nextActions.confirmGroundTarget();
+        return;
+      }
+      if (token === "Button1" || token === CONTROLLER_SYSTEM_BACK_TOKEN) {
+        nextActions.cancelGroundTarget();
+        return;
+      }
+    }
     if (
       token === "Button0"
       && !nextActions.gameplayActionsBlocked()
@@ -292,6 +305,13 @@ export function installInput(nextActions: InputActions): () => void {
       actions?.setInputMode("keyboard");
     }
     if (event.repeat) return;
+    if (nextActions.groundTargetActive() && (event.code === "Escape" || event.code === "Enter")) {
+      event.preventDefault();
+      nextActions.setInputMode("keyboard");
+      if (event.code === "Enter") nextActions.confirmGroundTarget();
+      else nextActions.cancelGroundTarget();
+      return;
+    }
     const actionControl = actionControlForKeyboardCode(event.code);
     if (actionControl) {
       if (nextActions.gameplayActionsBlocked()) return;

src/game/manastormLoot.ts

@@ -3,6 +3,7 @@ import { LOOT_CATALOG, rollBossLoot } from "./lootCatalog";
 import { useManastormStore } from "./manastormStore";
 import { useGameStore } from "./store";
 import { getManastormCatalog, manastormScaling } from "./manastorm";
+import { requestOnlineInteraction } from "./onlineSessionRuntime";
 
 /** Shared keyboard, controller, touch, and HUD interaction for the active corpse. */
 export function lootCurrentManastormBoss(now = Date.now()): boolean {
@@ -11,6 +12,7 @@ export function lootCurrentManastormBoss(now = Date.now()): boolean {
   if (game.gameMode !== "manastorm" || manastorm.status !== "awaiting-loot") return false;
   const bossId = manastorm.currentEncounter?.bossRuntimeId;
   if (!bossId) return false;
+  if (requestOnlineInteraction("loot", bossId)) return true;
   return useCombatStore.getState().lootMob(bossId, now);
 }
 

src/game/onlineCombatSync.test.ts

@@ -0,0 +1,102 @@
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
+import type { OnlineSessionPlayer } from "../app/onlineSessionTypes";
+import { useCombatStore } from "./combatStore";
+import { clearMobRuntimeRegistry, registerMobRuntime } from "./mobRuntimeRegistry";
+import {
+  configureOnlineSessionRuntime,
+  onlinePlayerActorId,
+} from "./onlineSessionRuntime";
+import {
+  clearPartyRuntimeRegistry,
+  registerPartyRuntimePosition,
+} from "./partyRuntimeRegistry";
+import { usePartyStore } from "./partyStore";
+
+function remotePlayer(health = 1): OnlineSessionPlayer {
+  return {
+    accountId: "remote",
+    username: "Remote",
+    character: {
+      id: "remote-character",
+      name: "Bulwarka",
+      classId: "warrior",
+      categoryId: "wow",
+      raceId: "human",
+      gender: "female",
+      level: 20,
+    },
+    role: "tank",
+    position: [8, 0, 0],
+    yaw: 0,
+    grounded: true,
+    health,
+    maxHealth: 1_000,
+    resource: 0,
+    maxResource: 100,
+    resourceName: "Rage",
+    selectedTargetId: null,
+    activeCast: null,
+    animationEvent: null,
+    equipment: [],
+    updatedAt: 1,
+  };
+}
+
+beforeEach(() => {
+  clearMobRuntimeRegistry();
+  clearPartyRuntimeRegistry();
+  useCombatStore.getState().initializeCharacter({ classId: "priest", level: 20 });
+  useCombatStore.getState().resetEncounter();
+  usePartyStore.setState({ members: [], selectedMemberId: null, selfSelected: false });
+});
+
+afterEach(() => {
+  configureOnlineSessionRuntime({ active: false, authority: true, localAccountId: null });
+  clearMobRuntimeRegistry();
+  clearPartyRuntimeRegistry();
+});
+
+describe("shared online combat actors", () => {
+  it("casts a normal player heal on a remote online player", () => {
+    const player = remotePlayer();
+    const actorId = onlinePlayerActorId(player.accountId);
+    configureOnlineSessionRuntime({
+      active: true,
+      authority: true,
+      localAccountId: "local",
+      players: [player],
+    });
+    registerPartyRuntimePosition(actorId, player.position);
+    useCombatStore.getState().synchronizeActors();
+    expect(useCombatStore.getState().selectFriendlyActor(actorId)).toBe(true);
+    expect(useCombatStore.getState().castAbility("wow335-priest-lesser-heal", [0, 0, 0], 1_000).ok).toBe(true);
+    const completion = useCombatStore.getState().activeCast?.completesAt ?? 1_000;
+    useCombatStore.getState().tick(0.1, completion);
+    expect(useCombatStore.getState().actors[actorId]?.health).toBeGreaterThan(1);
+    expect(useCombatStore.getState().combatEvents).toContainEqual(
+      expect.objectContaining({ kind: "healing", targetActorId: actorId }),
+    );
+  });
+
+  it("lets the leader's enemies acquire a nearby remote player", () => {
+    const player = { ...remotePlayer(1_000), position: [1, 0, 0] as const };
+    const actorId = onlinePlayerActorId(player.accountId);
+    configureOnlineSessionRuntime({
+      active: true,
+      authority: true,
+      localAccountId: "local",
+      players: [player],
+    });
+    registerPartyRuntimePosition(actorId, player.position);
+    registerMobRuntime("shared-enemy", [0, 0, 0]);
+    useCombatStore.getState().setPlayerPosition([100, 0, 100]);
+    useCombatStore.getState().registerMob("shared-enemy", {
+      name: "Shared enemy",
+      maxHealth: 100,
+      aggroRange: 5,
+      leashRange: 20,
+    });
+    expect(useCombatStore.getState().engageNearbyMobs(1_000)).toBe(1);
+    expect(useCombatStore.getState().mobs["shared-enemy"].targetActorId).toBe(actorId);
+  });
+});

src/game/onlineSessionRuntime.test.ts

@@ -0,0 +1,78 @@
+import { afterEach, describe, expect, it } from "vitest";
+import type { OnlineSessionPlayer } from "../app/onlineSessionTypes";
+import {
+  configureOnlineSessionRuntime,
+  drainOnlineInteractions,
+  onlinePlayerActorId,
+  onlinePlayerRuntimeActor,
+  onlineSessionIsActive,
+  onlineSessionOwnsWorldSimulation,
+  onlineSynchronizedMobTransform,
+  requestOnlineInteraction,
+} from "./onlineSessionRuntime";
+
+const remotePlayer: OnlineSessionPlayer = {
+  accountId: "remote",
+  username: "Remote",
+  character: {
+    id: "remote-character",
+    name: "Mendara",
+    classId: "priest",
+    categoryId: "wow",
+    raceId: "human",
+    gender: "female",
+    level: 20,
+  },
+  role: "healer",
+  position: [4, 0, 6],
+  yaw: 1,
+  grounded: true,
+  health: 800,
+  maxHealth: 1_000,
+  resource: 400,
+  maxResource: 500,
+  resourceName: "Mana",
+  selectedTargetId: null,
+  activeCast: null,
+  animationEvent: null,
+  equipment: [],
+  updatedAt: 1,
+};
+
+afterEach(() => configureOnlineSessionRuntime({
+  active: false,
+  authority: true,
+  localAccountId: null,
+}));
+
+describe("online session runtime", () => {
+  it("exposes remote players as live combat actors", () => {
+    configureOnlineSessionRuntime({
+      active: true,
+      authority: true,
+      localAccountId: "local",
+      players: [remotePlayer],
+    });
+    const actor = onlinePlayerRuntimeActor(onlinePlayerActorId("remote"));
+    expect(actor).toMatchObject({ health: 800, maxHealth: 1_000, alive: true, kind: "companion" });
+    expect(onlineSessionIsActive()).toBe(true);
+    expect(onlineSessionOwnsWorldSimulation()).toBe(true);
+  });
+
+  it("uses leader transforms and queues follower interactions", () => {
+    configureOnlineSessionRuntime({
+      active: true,
+      authority: false,
+      localAccountId: "local",
+      players: [remotePlayer],
+      mobTransforms: { boss: { position: [7, 0, 9], yaw: 0.75 } },
+    });
+    expect(onlineSessionOwnsWorldSimulation()).toBe(false);
+    expect(onlineSynchronizedMobTransform("boss")?.position).toEqual([7, 0, 9]);
+    expect(requestOnlineInteraction("loot", "boss")).toBe(true);
+    expect(drainOnlineInteractions()).toEqual([
+      expect.objectContaining({ kind: "loot", targetActorId: "boss", sourceActorId: onlinePlayerActorId("local") }),
+    ]);
+    expect(drainOnlineInteractions()).toEqual([]);
+  });
+});

src/game/onlineSessionRuntime.ts

@@ -0,0 +1,137 @@
+import type { ClassId } from "../app/characterCatalog";
+import type {
+  OnlineMobTransform,
+  OnlineRelayEventInput,
+  OnlineSessionPlayer,
+} from "../app/onlineSessionTypes";
+import {
+  normalizeActorResourcePool,
+  type CombatActorState,
+} from "./combatActors";
+
+const ONLINE_PLAYER_PREFIX = "online-player:";
+let active = false;
+let authority = true;
+let localAccountId: string | null = null;
+let playerActors = new Map<string, CombatActorState>();
+let players = new Map<string, OnlineSessionPlayer>();
+let mobTransforms = new Map<string, OnlineMobTransform>();
+let interactionSequence = 0;
+let interactions: OnlineRelayEventInput[] = [];
+
+export function onlinePlayerActorId(accountId: string): string {
+  return `${ONLINE_PLAYER_PREFIX}${accountId}`;
+}
+
+export function onlineAccountIdFromActor(actorId: string): string | null {
+  return actorId.startsWith(ONLINE_PLAYER_PREFIX)
+    ? actorId.slice(ONLINE_PLAYER_PREFIX.length)
+    : null;
+}
+
+export function isOnlinePlayerActorId(actorId: string): boolean {
+  return actorId.startsWith(ONLINE_PLAYER_PREFIX);
+}
+
+export function configureOnlineSessionRuntime(input: {
+  readonly active: boolean;
+  readonly authority: boolean;
+  readonly localAccountId: string | null;
+  readonly players?: readonly OnlineSessionPlayer[];
+  readonly mobTransforms?: Readonly<Record<string, OnlineMobTransform>>;
+}): void {
+  active = input.active;
+  authority = !input.active || input.authority;
+  localAccountId = input.localAccountId;
+  players = new Map((input.players ?? []).map((player) => [player.accountId, player]));
+  mobTransforms = new Map(Object.entries(input.mobTransforms ?? {}));
+  const nextActors = new Map<string, CombatActorState>();
+  for (const player of input.players ?? []) {
+    if (player.accountId === input.localAccountId || !player.character) continue;
+    const id = onlinePlayerActorId(player.accountId);
+    const maximum = Math.max(0, player.maxResource);
+    const resourceId = player.resourceName.toLowerCase() || "resource";
+    nextActors.set(id, {
+      id,
+      threatActorId: id,
+      kind: "companion",
+      ownerId: player.accountId,
+      classId: player.character.classId as ClassId,
+      level: player.character.level,
+      health: player.health,
+      maxHealth: player.maxHealth,
+      absorb: 0,
+      resources: maximum > 0
+        ? { [resourceId]: normalizeActorResourcePool(resourceId, player.resource, maximum) }
+        : {},
+      cooldowns: {},
+      globalCooldownEndsAt: 0,
+      cast: player.activeCast ? {
+        abilityId: player.activeCast.abilityId,
+        school: player.activeCast.school,
+        mode: player.activeCast.mode,
+        startedAt: player.activeCast.startedAt,
+        completesAt: player.activeCast.completesAt,
+        originalDurationMs: player.activeCast.originalDurationMs,
+        pushbackHits: player.activeCast.pushbackHits,
+        origin: player.activeCast.origin,
+        targetId: player.activeCast.targetId,
+      } : null,
+      controlledUntil: 0,
+      schoolLockedUntil: {},
+      comboPoints: 0,
+      comboTargetId: null,
+      runes: [],
+      alive: player.health > 0,
+    });
+  }
+  playerActors = nextActors;
+  if (!input.active) interactions = [];
+}
+
+export function onlineSessionIsActive(): boolean {
+  return active;
+}
+
+export function onlineSessionOwnsWorldSimulation(): boolean {
+  return !active || authority;
+}
+
+export function onlineSessionLocalAccountId(): string | null {
+  return localAccountId;
+}
+
+export function onlinePlayerRuntimeActors(): readonly CombatActorState[] {
+  return [...playerActors.values()];
+}
+
+export function onlinePlayerRuntimeActor(actorId: string): CombatActorState | null {
+  return playerActors.get(actorId) ?? null;
+}
+
+export function onlineSessionPlayer(accountId: string): OnlineSessionPlayer | null {
+  return players.get(accountId) ?? null;
+}
+
+export function onlineSynchronizedMobTransform(id: string): OnlineMobTransform | null {
+  return active && !authority ? mobTransforms.get(id) ?? null : null;
+}
+
+export function requestOnlineInteraction(kind: "loot" | "portal", targetActorId = ""): boolean {
+  if (!active || authority) return false;
+  interactionSequence += 1;
+  interactions.push({
+    clientEventId: `interaction:${kind}:${Date.now()}:${interactionSequence}`,
+    kind,
+    sourceActorId: localAccountId ? onlinePlayerActorId(localAccountId) : "",
+    targetActorId,
+    occurredAt: Date.now(),
+  });
+  return true;
+}
+
+export function drainOnlineInteractions(): readonly OnlineRelayEventInput[] {
+  const pending = interactions;
+  interactions = [];
+  return pending;
+}

src/game/partyAbilityAi.test.ts

@@ -0,0 +1,82 @@
+import { beforeEach, describe, expect, it } from "vitest";
+import { abilitiesForClass, abilityAtLevel, resourceProfileForClass } from "./abilityCatalog";
+import { aiHintsForAbility } from "./abilityRules";
+import { useCombatStore } from "./combatStore";
+import { commitPartyAbilityUse, choosePartyAbility, partyAbilityIsReady } from "./partyAbilityAi";
+import { usePartyStore, type PartyMember } from "./partyStore";
+
+function memberFor(classId: PartyMember["classId"], role: PartyMember["role"]): PartyMember {
+  const base = usePartyStore.getState().members[0];
+  const profile = resourceProfileForClass(classId);
+  return {
+    ...base,
+    classId,
+    role,
+    level: 80,
+    resourceType: profile.type,
+    resourceName: profile.name,
+    resource: profile.maximum,
+    maxResource: profile.maximum,
+    resourcePools: { [profile.type]: profile.maximum },
+    cooldowns: {},
+    globalCooldownEndsAt: 0,
+    nextActionAt: 0,
+    tauntReadyAt: 0,
+  };
+}
+
+describe("catalog-driven party rotations", () => {
+  beforeEach(() => {
+    useCombatStore.getState().initializeCharacter({ classId: "priest", level: 80 });
+    usePartyStore.getState().initializeParty("party-ai", 80, useCombatStore.getState().health);
+    useCombatStore.getState().registerMob("caster", { name: "Caster", maxHealth: 1_000, xpReward: 0 });
+    useCombatStore.setState((state) => ({
+      mobs: {
+        ...state.mobs,
+        caster: {
+          ...state.mobs.caster,
+          activeCast: {
+            attackId: "test-cast",
+            name: "Test Cast",
+            school: "shadow",
+            interruptible: true,
+            targetActorId: "__player__",
+            startedAt: 1_000,
+            completesAt: 5_000,
+          },
+        },
+      },
+    }));
+  });
+
+  it("prioritizes an interrupt over ordinary damage deterministically", () => {
+    const member = memberFor("rogue", "damage");
+    const context = { now: 2_000, target: useCombatStore.getState().mobs.caster };
+    const first = choosePartyAbility(member, context);
+    const second = choosePartyAbility(member, context);
+    expect(first?.id).toBe(second?.id);
+    expect(first && aiHintsForAbility(first).categories).toContain("interrupt");
+  });
+
+  it("selects a real healer catalog spell and spends its resource/GCD", () => {
+    const member = memberFor("priest", "healer");
+    const ability = choosePartyAbility(member, {
+      now: 2_000,
+      target: null,
+      injuredAllies: 1,
+      lowestHealthFraction: 0.2,
+    });
+    expect(ability && aiHintsForAbility(ability).categories).toContain("heal");
+    const committed = commitPartyAbilityUse(member, ability!, 2_000)!;
+    expect(committed.resource).toBeLessThan(member.resource);
+    expect(committed.globalCooldownEndsAt).toBeGreaterThan(2_000);
+  });
+
+  it("will not cast a mana spell after mana exhaustion", () => {
+    const member = { ...memberFor("priest", "healer"), resource: 0, resourcePools: { mana: 0 } };
+    const heal = abilitiesForClass("priest")
+      .map((ability) => abilityAtLevel(ability, 80))
+      .find((ability) => aiHintsForAbility(ability).categories.includes("heal") && ability.cost.amount > 0)!;
+    expect(partyAbilityIsReady(member, heal, 2_000)).toBe(false);
+  });
+});

src/game/partyAbilityAi.ts

@@ -0,0 +1,150 @@
+import {
+  abilitiesForClass,
+  abilityAtLevel,
+  isAbilityUnlocked,
+  type AbilityDefinition,
+  type AbilityEffect,
+  type ResourceType,
+} from "./abilityCatalog";
+import { aiHintsForAbility, runeCostForAbility } from "./abilityRules";
+import { spendDeathKnightRunes } from "./combatResources";
+import type { MobCombatState } from "./combatStore";
+import type { PartyMember } from "./partyStore";
+
+export interface PartyAbilityContext {
+  readonly now: number;
+  readonly target: MobCombatState | null;
+  readonly targetIsLoose?: boolean;
+  readonly requiredControl?: boolean;
+  readonly allyNeedsDispel?: boolean;
+  readonly fallenAlly?: boolean;
+  readonly injuredAllies?: number;
+  readonly lowestHealthFraction?: number;
+}
+
+function currentResource(member: PartyMember, type: ResourceType): number {
+  return member.resourcePools[type] ?? (type === member.resourceType ? member.resource : 0);
+}
+
+function abilityCosts(ability: AbilityDefinition): readonly { resource: ResourceType; amount: number }[] {
+  return (ability.costs?.length ? ability.costs : [ability.cost]).map((cost) => ({
+    resource: cost.resource,
+    amount: cost.percentage ? cost.amount / 100 : cost.amount,
+  }));
+}
+
+export function partyAbilityIsReady(member: PartyMember, ability: AbilityDefinition, now: number): boolean {
+  if (ability.passive || !isAbilityUnlocked(ability, member.level)) return false;
+  if (member.globalCooldownEndsAt > now || (member.cooldowns[ability.id] ?? 0) > now) return false;
+  if ((member.schoolLockedUntil[ability.castRules?.school ?? "physical"] ?? 0) > now) return false;
+  if (aiHintsForAbility(ability).categories.includes("taunt") && member.tauntReadyAt > now) return false;
+  if (abilityCosts(ability).some((cost) => {
+    const amount = cost.amount <= 1 && ability.cost.percentage
+      ? (cost.resource === member.resourceType ? member.maxResource : 100) * cost.amount
+      : cost.amount;
+    return currentResource(member, cost.resource) < amount;
+  })) return false;
+  const runeCost = member.classId === "death-knight" ? runeCostForAbility(ability) : null;
+  return !runeCost || spendDeathKnightRunes(member.runes, runeCost, now) !== null;
+}
+
+function candidateAbilities(member: PartyMember, now: number): readonly AbilityDefinition[] {
+  return abilitiesForClass(member.classId)
+    .filter((ability) => partyAbilityIsReady(member, abilityAtLevel(ability, member.level), now))
+    .map((ability) => abilityAtLevel(ability, member.level));
+}
+
+function scoreAbility(member: PartyMember, ability: AbilityDefinition, context: PartyAbilityContext): number {
+  const categories = new Set(aiHintsForAbility(ability).categories);
+  let score = ability.ai?.priority ?? 0;
+  if (member.role === "tank") {
+    if (context.target?.activeCast && categories.has("interrupt")) score += 1_000;
+    if (context.targetIsLoose && categories.has("taunt")) score += 900;
+    if (categories.has("mitigation") && member.health / member.maxHealth < 0.55) score += 760;
+    if (categories.has("control") && context.requiredControl) score += 700;
+    if (categories.has("debuff")) score += 300;
+    if (categories.has("damage")) score += 180;
+  } else if (member.role === "healer") {
+    if (context.fallenAlly && categories.has("resurrection")) score += 1_200;
+    if (context.allyNeedsDispel && categories.has("dispel")) score += 1_050;
+    if ((context.lowestHealthFraction ?? 1) < 0.3 && categories.has("emergency-heal")) score += 950;
+    if ((context.injuredAllies ?? 0) >= 3 && categories.has("area-heal")) score += 850;
+    if ((context.lowestHealthFraction ?? 1) < 0.9 && categories.has("heal")) score += 600;
+    if (categories.has("mitigation")) score += 350;
+    if (context.target?.activeCast && categories.has("interrupt")) score += 250;
+    if (categories.has("damage")) score += 80;
+  } else {
+    if (context.target?.activeCast && categories.has("interrupt")) score += 1_000;
+    if (context.requiredControl && categories.has("control")) score += 900;
+    if ((context.target?.health ?? 1) / Math.max(1, context.target?.maxHealth ?? 1) <= 0.2 && categories.has("execute")) score += 800;
+    if (categories.has("debuff")) score += 520;
+    if (categories.has("damage")) score += 300;
+  }
+  if (ability.castTimeMs > 0 && context.target?.activeCast && categories.has("interrupt")) score -= 800;
+  return score;
+}
+
+export function choosePartyAbility(
+  member: PartyMember,
+  context: PartyAbilityContext,
+): AbilityDefinition | null {
+  return candidateAbilities(member, context.now)
+    .map((ability) => ({ ability, score: scoreAbility(member, ability, context) }))
+    .filter((candidate) => candidate.score > 0)
+    .sort((left, right) => right.score - left.score
+      || left.ability.cooldownMs - right.ability.cooldownMs
+      || left.ability.id.localeCompare(right.ability.id))[0]?.ability ?? null;
+}
+
+export function commitPartyAbilityUse(
+  member: PartyMember,
+  ability: AbilityDefinition,
+  now: number,
+): PartyMember | null {
+  if (!partyAbilityIsReady(member, ability, now)) return null;
+  const resourcePools = { ...member.resourcePools };
+  const lastResourceSpentAt = { ...member.lastResourceSpentAt };
+  let resource = member.resource;
+  for (const cost of abilityCosts(ability)) {
+    const maximum = cost.resource === member.resourceType ? member.maxResource : 100;
+    const amount = cost.amount <= 1 && ability.cost.percentage ? maximum * cost.amount : cost.amount;
+    const current = currentResource(member, cost.resource);
+    resourcePools[cost.resource] = Math.max(0, current - amount);
+    if (amount > 0) lastResourceSpentAt[cost.resource] = now;
+    if (cost.resource === member.resourceType) resource = resourcePools[cost.resource] ?? resource;
+  }
+  const runeCost = member.classId === "death-knight" ? runeCostForAbility(ability) : null;
+  const runes = runeCost ? spendDeathKnightRunes(member.runes, runeCost, now) : member.runes;
+  if (!runes) return null;
+  return {
+    ...member,
+    resource,
+    resourcePools,
+    lastResourceSpentAt,
+    runes,
+    cooldowns: ability.cooldownMs > 0
+      ? { ...member.cooldowns, [ability.id]: now + ability.cooldownMs }
+      : member.cooldowns,
+    globalCooldownEndsAt: now + ability.gcdMs,
+    tauntReadyAt: aiHintsForAbility(ability).categories.includes("taunt")
+      ? now + Math.max(8_000, ability.cooldownMs)
+      : member.tauntReadyAt,
+  };
+}
+
+export function partyAbilityAmount(
+  member: PartyMember,
+  ability: AbilityDefinition,
+  effect: AbilityEffect,
+): number {
+  const coefficient = "coefficient" in effect
+    ? effect.coefficient
+    : effect.kind === "finisher-damage"
+      ? effect.baseCoefficient + effect.perComboCoefficient * 5
+      : 0;
+  const power = member.level * 4
+    + member.gearStats.spellPower
+    + member.gearStats.attackPower * 0.35
+    + member.gearStats.rangedAttackPower * 0.35;
+  return Math.max(1, Math.round(Math.max(0.1, coefficient) * Math.max(8, power)));
+}

src/game/partyRuntimeRegistry.ts

@@ -108,6 +108,11 @@ export function updatePartyRuntimePosition(
   }
 }
 
+export function removePartyRuntimePosition(id: string): void {
+  positions.delete(id);
+  targetVisibility.delete(id);
+}
+
 export function getPartyRuntimePosition(id: string): PartyWorldPosition | null {
   const position = positions.get(id);
   return position ? [...position] as MutablePartyWorldPosition : null;

src/game/partyStore.ts

@@ -29,6 +29,8 @@ import type { RuntimeTalentRanks as TalentRanks } from "./talentRuntimeCatalog";
 import type { EnemyControlMechanic } from "./enemyAttacks";
 import type { ContentCategoryId } from "../app/contentCategories";
 import type { PartyRole, PartySize } from "./partyRoles";
+import { resourceProfileForClass, type ResourceType } from "./abilityCatalog";
+import { createDeathKnightRunes, type CombatActorCastState, type DeathKnightRuneState } from "./combatActors";
 
 export {
   classCanFillPartyRole,
@@ -56,6 +58,18 @@ export interface PartyMember {
   readonly level: number;
   readonly health: number;
   readonly maxHealth: number;
+  readonly resourceType: ResourceType;
+  readonly resourceName: string;
+  readonly resource: number;
+  readonly maxResource: number;
+  readonly resourcePools: Readonly<Partial<Record<ResourceType, number>>>;
+  readonly lastResourceSpentAt: Readonly<Partial<Record<ResourceType, number>>>;
+  readonly cooldowns: Readonly<Record<string, number>>;
+  readonly globalCooldownEndsAt: number;
+  readonly activeCast: CombatActorCastState | null;
+  readonly activeCastTargetId: string | null;
+  readonly schoolLockedUntil: Readonly<Partial<Record<DamageSchool, number>>>;
+  readonly runes: readonly DeathKnightRuneState[];
   readonly gearStats: ItemStats;
   readonly status: PartyMemberStatus;
   readonly nextActionAt: number;
@@ -214,6 +228,9 @@ function createMember(
   const gender: GenderId = genders[Math.floor(nextRandom(identityRandom) * genders.length)] ?? genders[0] ?? "male";
   const appearance = randomAppearance(race.id, gender, () => nextRandom(identityRandom));
   const maxHealth = memberMaxHealth(level, role, EMPTY_ITEM_STATS, template.classId, race.id);
+  const resourceProfile = resourceProfileForClass(template.classId);
+  const maxResource = resourceProfile.maximum;
+  const resource = resourceProfile.initial;
   return {
     id: `party-${role}-${index}-${template.classId}`,
     name: template.name,
@@ -230,6 +247,18 @@ function createMember(
     level: Math.max(1, Math.trunc(level)),
     health: maxHealth,
     maxHealth,
+    resourceType: resourceProfile.type,
+    resourceName: resourceProfile.name,
+    resource,
+    maxResource,
+    resourcePools: Object.freeze({ [resourceProfile.type]: resource }),
+    lastResourceSpentAt: Object.freeze({}),
+    cooldowns: Object.freeze({}),
+    globalCooldownEndsAt: 0,
+    activeCast: null,
+    activeCastTargetId: null,
+    schoolLockedUntil: Object.freeze({}),
+    runes: template.classId === "death-knight" ? createDeathKnightRunes() : Object.freeze([]),
     gearStats: EMPTY_ITEM_STATS,
     status: "ready",
     nextActionAt: 0,
@@ -321,6 +350,27 @@ export interface PartyState {
   cycleMember: (direction?: 1 | -1) => string | null;
   clearSelection: () => void;
   healMember: (id: string, amount: number) => number;
+  updateMemberCombat: (
+    id: string,
+    patch: Partial<Pick<PartyMember,
+      | "resource"
+      | "maxResource"
+      | "resourcePools"
+      | "lastResourceSpentAt"
+      | "cooldowns"
+      | "globalCooldownEndsAt"
+      | "activeCast"
+      | "activeCastTargetId"
+      | "schoolLockedUntil"
+      | "runes"
+      | "health"
+      | "maxHealth"
+      | "controlledUntil"
+      | "controlMechanic"
+      | "nextActionAt"
+      | "status"
+    >>,
+  ) => boolean;
   reviveMember: (id: string, percentMaxHealth?: number) => number;
   damageMember: (id: string, amount: number, school?: DamageSchool, attackerLevel?: number) => number;
   /** Applies damage that has already passed a discrete combat-result roll. */
@@ -479,6 +529,18 @@ export const usePartyStore = create<PartyState>((set, get) => ({
     return healed;
   },
 
+  updateMemberCombat: (id, patch) => {
+    let updated = false;
+    set((state) => ({
+      members: state.members.map((member) => {
+        if (member.id !== id) return member;
+        updated = true;
+        return { ...member, ...patch };
+      }),
+    }));
+    return updated;
+  },
+
   reviveMember: (id, percentMaxHealth = 0.35) => {
     let restored = 0;
     set((state) => ({

src/game/romAbilityCatalog.ts

@@ -12,6 +12,7 @@ import {
   translateRomAbilitySemantics,
   type RomAbilitySemantic,
   type RomGeneratedAbilityLike,
+  type RomSourceComponent,
 } from "./romAbilitySemantics";
 
 export type RomSkillGroup = "primary" | "general" | "elite" | "passive";
@@ -71,9 +72,9 @@ interface GeneratedSkill {
 const generated = rawCatalog.skills as unknown as readonly GeneratedSkill[];
 
 function resource(value: string): ResourceType {
-  return ["mana", "rage", "energy", "runic-power", "focus", "health"].includes(value)
+  return ["mana", "rage", "energy", "runic-power", "focus", "nature-power", "psi", "health"].includes(value)
     ? value as ResourceType
-    : "mana";
+    : `custom:${slug(value)}`;
 }
 
 function costs(rows: readonly GeneratedCost[]): readonly AbilityCost[] {
@@ -109,10 +110,10 @@ function knownResource(value: string): ResourceType | undefined {
   if (value === "mp") return "mana";
   if (value === "nature's power") return "nature-power";
   if (value === "psi point" || value === "psi points") return "psi";
-  if (value === "soul point" || value === "soul points") return "focus";
+  if (value === "soul point" || value === "soul points") return "soul-power";
   return ["mana", "rage", "energy", "runic-power", "focus", "nature-power", "psi", "health"].includes(value)
     ? value as ResourceType
-    : undefined;
+    : value ? `custom:${slug(value)}` : undefined;
 }
 
 function auraRecipient(row: GeneratedSemanticRow, semantic: Extract<RomAbilitySemantic, { kind: "aura" | "absorb" | "proc" }>): "ability-target" | "caster" {
@@ -123,36 +124,119 @@ function auraRecipient(row: GeneratedSemanticRow, semantic: Extract<RomAbilitySe
   return "ability-target";
 }
 
-function auraModifier(semantic: Extract<RomAbilitySemantic, { kind: "aura" }>): AuraModifier | null {
+const MAGIC_SCHOOLS: readonly DamageSchool[] = ["arcane", "fire", "frost", "holy", "nature", "shadow"];
+
+function percent(value: number): number {
+  return value / 100;
+}
+
+function magicDamageTaken(value: number): readonly AuraModifier[] {
+  return MAGIC_SCHOOLS.map((school) => ({
+    kind: "damage" as const,
+    direction: "taken" as const,
+    school,
+    operation: "percent" as const,
+    value,
+  }));
+}
+
+function auraModifiers(semantic: Extract<RomAbilitySemantic, { kind: "aura" }>): readonly AuraModifier[] {
   const value = semantic.value ?? 0;
   if (semantic.effect === "damage-immunity") {
-    return { kind: "damage", direction: "taken", operation: "percent", value: -100 };
+    return [{ kind: "damage", direction: "taken", operation: "percent", value: -1 }];
   }
   if (semantic.effect === "physical-damage-immunity") {
-    return { kind: "damage", direction: "taken", school: "physical", operation: "percent", value: -100 };
+    return [{ kind: "damage", direction: "taken", school: "physical", operation: "percent", value: -1 }];
   }
   if (semantic.effect === "magic-damage-immunity") {
-    return { kind: "stat", stat: "magic-damage-immunity", operation: "flat", value: 1 };
+    return magicDamageTaken(-1);
   }
   if (semantic.effect === "poison-immunity") {
-    return { kind: "stat", stat: "poison-immunity", operation: "flat", value: 1 };
+    return [{ kind: "stat", stat: "poison-immunity", operation: "flat", value: 1 }];
   }
   if (semantic.effect === "maximum-mana") {
-    return { kind: "resource", resource: "mana", property: "maximum", operation: "flat", value };
+    return [{ kind: "resource", resource: "mana", property: "maximum", operation: "flat", value }];
   }
   if (semantic.effect === "mana-regeneration") {
-    return { kind: "resource", resource: "mana", property: "regeneration", operation: "flat", value };
+    return [{ kind: "resource", resource: "mana", property: "regeneration", operation: "flat", value }];
   }
   if (semantic.effect === "health-regeneration") {
-    return { kind: "resource", resource: "health", property: "regeneration", operation: "flat", value };
+    return [{ kind: "stat", stat: "health-regeneration", operation: "flat", value }];
   }
-  if (["physical-attack", "magical-attack", "weapon-damage"].includes(semantic.effect)) {
-    return { kind: "stat", stat: semantic.effect, operation: "flat", value };
+
+  const type = semantic.modifierType;
+  if (type === null) return semantic.value === null
+    ? []
+    : [{ kind: "stat", stat: semantic.effect, operation: "flat", value }];
+  if (type >= 2 && type <= 22) {
+    return [{ kind: "stat", stat: semantic.effect, operation: "flat", value }];
   }
-  if (semantic.modifierType !== null || semantic.value !== null) {
-    return { kind: "stat", stat: semantic.effect, operation: "flat", value };
+  if (type === 23) return [{ kind: "stat", stat: "attack-speed", operation: "flat", value: -value }];
+  if (type === 24) return [{ kind: "stat", stat: "movement-speed", operation: "percent", value: percent(value) }];
+  if (type === 25) return [
+    { kind: "damage", direction: "dealt", attackKind: "melee", operation: "flat", value },
+    { kind: "damage", direction: "dealt", attackKind: "ranged", operation: "flat", value },
+  ];
+  if (type >= 26 && type <= 32) {
+    const school = ({ 27: "nature", 28: "frost", 29: "fire", 30: "nature", 31: "holy", 32: "shadow" } as Partial<Record<number, DamageSchool>>)[type];
+    return [{ kind: "stat", stat: school ? `resistance:${school}` : "all-resistance", operation: "flat", value }];
   }
-  return null;
+  if (type === 33) return [{ kind: "resource", resource: "mana", property: "cost", operation: "percent", value: -percent(value) }];
+  if (type === 37 || (type >= 56 && type <= 67) || type === 173) {
+    return [{ kind: "damage", direction: "dealt", attackKind: "melee", operation: "percent", value: percent(value) }];
+  }
+  if (type >= 38 && type <= 43) return [{ kind: "stat", stat: "armor", operation: "percent", value: percent(value) }];
+  if (type === 44) return [{ kind: "damage", direction: "dealt", attackKind: "spell", operation: "percent", value: percent(value) }];
+  if (type >= 45 && type <= 50) {
+    const school = (["nature", "frost", "fire", "nature", "holy", "shadow"] as const)[type - 45];
+    return [{ kind: "damage", direction: "dealt", school, operation: "percent", value: percent(value) }];
+  }
+  if (type === 51) return [{ kind: "stat", stat: "spell-haste", operation: "flat", value: -value }];
+  if (type >= 52 && type <= 55) return [{ kind: "damage", direction: "dealt", attackKind: "ranged", operation: "percent", value: percent(value) }];
+  if (type >= 68 && type <= 71) return [{ kind: "stat", stat: "ranged-haste", operation: "flat", value: -value }];
+  if (type >= 72 && type <= 83) return [{ kind: "stat", stat: "melee-haste", operation: "flat", value: -value }];
+  if (type === 134) return [{ kind: "stat", stat: "attack-power", operation: "percent", value: percent(value) }];
+  if (type === 135) return [{ kind: "stat", stat: "armor", operation: "percent", value: percent(value) }];
+  if (type === 138) return [{ kind: "stat", stat: "threat", operation: "percent", value: percent(value) }];
+  if (type >= 139 && type <= 141) {
+    const resource = (["rage", "focus", "energy"] as const)[type - 139];
+    return [{ kind: "resource", resource, property: "regeneration", operation: "percent", value: percent(value) }];
+  }
+  if (type === 142) return magicDamageTaken(-percent(value));
+  if (type === 143) return [{ kind: "damage", direction: "taken", school: "physical", operation: "percent", value: -percent(value) }];
+  if (type === 144) return [{ kind: "healing", direction: "taken", operation: "percent", value: -percent(value) }];
+  if (type === 148) return [{ kind: "damage", direction: "dealt", attackKind: "spell", operation: "flat", value }];
+  if (type === 149) return [{ kind: "healing", direction: "done", operation: "percent", value: percent(value) }];
+  if (type === 150) return [{ kind: "healing", direction: "done", operation: "flat", value }];
+  if (type >= 161 && type <= 166) {
+    const stat = (["strength", "stamina", "intellect", "wisdom", "dexterity", "all-primary-attributes"] as const)[type - 161];
+    return [{ kind: "stat", stat, operation: "percent", value: percent(value) }];
+  }
+  if (type === 167) return [{ kind: "stat", stat: "maximum-health", operation: "percent", value: percent(value) }];
+  if (type === 168) return [{ kind: "resource", resource: "mana", property: "maximum", operation: "percent", value: percent(value) }];
+  if (type === 170) return [{ kind: "stat", stat: "magical-defense", operation: "percent", value: percent(value) }];
+  if (type === 171) return [{ kind: "stat", stat: "magical-attack", operation: "percent", value: percent(value) }];
+  if (type === 184 || type === 185 || type === 186 || type === 187 || type === 188 || type === 189) {
+    const school = (["nature", "frost", "fire", "nature", "holy", "shadow"] as const)[type - 184];
+    return [{ kind: "damage", direction: "dealt", school, operation: "flat", value }];
+  }
+  if (type === 191) return [{ kind: "damage", direction: "dealt", attackKind: "spell", operation: "flat", value }];
+  if (type === 192 || type === 208) return [{ kind: "damage", direction: "dealt", attackKind: "spell", operation: "percent", value: percent(value) }];
+  if (type === 195 || type === 199) return [{ kind: "stat", stat: "magical-hit", operation: "flat", value }];
+  if (type === 197) return [{ kind: "stat", stat: "physical-hit", operation: "flat", value }];
+  if (type === 198) return [{ kind: "stat", stat: "dodge", operation: "flat", value }];
+  if (type === 204 || type === 205) return [{ kind: "damage", direction: "dealt", operation: "percent", value: percent(value) }];
+  if (type === 206 || type === 207 || type === 209) return [{ kind: "damage", direction: "taken", operation: "percent", value: percent(value) }];
+  if (type >= 214 && type <= 216) {
+    const resource = (["rage", "energy", "focus"] as const)[type - 214];
+    return [{ kind: "resource", resource, property: "cost", operation: "percent", value: -percent(value) }];
+  }
+  if (type >= 220 && type <= 226) {
+    const school = ({ 221: "nature", 222: "frost", 223: "fire", 224: "nature", 225: "holy", 226: "shadow" } as Partial<Record<number, DamageSchool>>)[type];
+    return [{ kind: "stat", stat: school ? `resistance:${school}` : "all-resistance", operation: "percent", value: percent(value) }];
+  }
+  if (type === 227) return [{ kind: "stat", stat: "parry", operation: "percent", value: percent(value) }];
+  return [{ kind: "stat", stat: semantic.effect, operation: "flat", value }];
 }
 
 function controlKind(effect: string): Extract<AbilityEffect, { kind: "apply-aura" }>["control"] {
@@ -173,11 +257,30 @@ function semanticEffect(row: GeneratedSemanticRow, semantic: RomAbilitySemantic,
   const componentKey = semantic.sourceComponentIds.join("-") || "tooltip";
   const effectId = `${row.sourceSkillId}-${componentKey}-${index}`;
   if (semantic.kind === "damage" || semantic.kind === "heal") {
+    const rawPower = Math.max(0, semantic.power);
+    const rawFixed = Math.max(0, semantic.fixedValue);
+    const coefficientCalculation = semantic.calculationType === null
+      ? rawPower > 0 && rawPower <= 4
+      : [0, 2, 3, 10].includes(semantic.calculationType);
+    const powerCoefficient = coefficientCalculation ? rawPower : 0;
+    const fixedCoefficient = semantic.fixedType > 0 ? rawFixed : 0;
+    const coefficientBase = powerCoefficient + fixedCoefficient;
+    const coefficientPerLevel = powerCoefficient * Math.max(0, semantic.powerPerSkillLevel) / 100
+      + fixedCoefficient * Math.max(0, semantic.fixedPerSkillLevel) / 100;
+    const coefficient = coefficientBase + coefficientPerLevel;
+    const sourcePoints = coefficientCalculation ? 0 : rawPower;
+    const pointsPerLevel = sourcePoints * Math.max(0, semantic.powerPerSkillLevel) / 100;
+    const basePoints = sourcePoints + pointsPerLevel;
     return {
       kind: semantic.kind,
-      coefficient: Math.max(0, semantic.power),
-      basePoints: Math.max(0, semantic.fixedValue),
-      pointsPerLevel: Math.max(0, semantic.fixedPerSkillLevel),
+      coefficient,
+      ...(coefficientPerLevel > 0 ? { coefficientPerLevel, sourceLevel: 1 } : {}),
+      ...(basePoints > 0 ? {
+        basePoints,
+        pointsPerLevel,
+        sourceLevel: 1,
+        ...(coefficient > 0 ? { bonusPowerCoefficient: coefficient } : {}),
+      } : {}),
       ...(semantic.kind === "heal" && semantic.percentMaxHealth !== undefined
         ? { percentMaxHealth: semantic.percentMaxHealth }
         : {}),
@@ -189,8 +292,9 @@ function semanticEffect(row: GeneratedSemanticRow, semantic: RomAbilitySemantic,
     return {
       kind: semantic.kind,
       coefficient: 0,
-      basePoints: Math.max(0, semantic.basePerTick),
-      pointsPerLevel: Math.max(0, semantic.perSkillLevel),
+      basePoints: Math.max(0, semantic.basePerTick) * (1 + Math.max(0, semantic.perSkillLevel) / 100),
+      pointsPerLevel: Math.max(0, semantic.basePerTick) * Math.max(0, semantic.perSkillLevel) / 100,
+      sourceLevel: 1,
       ticks,
       intervalMs,
       ...(semantic.kind === "dot" ? { tag: `rom-${effectId}` } : {}),
@@ -214,24 +318,30 @@ function semanticEffect(row: GeneratedSemanticRow, semantic: RomAbilitySemantic,
       id: `rom-control-${effectId}-${slug(semantic.effect)}`,
       name: `${row.name}: ${semantic.effect}`,
       disposition: "debuff",
-      durationMs: durationMs(semantic.durationSeconds),
+      durationMs: Math.max(1_000, durationMs(semantic.durationSeconds)),
       dispelCategory: "magic",
     };
     return { kind: "apply-aura", aura, control, sourceEffectType: -1, sourceAuraType: -1, miscValue: 0, triggerSpellId: 0 };
   }
-  if (semantic.kind === "interrupt") return { kind: "interrupt", lockoutMs: durationMs(semantic.lockoutSeconds || 4) };
+  if (semantic.kind === "interrupt") return { kind: "interrupt", lockoutMs: Math.max(1_000, durationMs(semantic.lockoutSeconds || 4)) };
   if (semantic.kind === "aura") {
     const recipient = auraRecipient(row, semantic);
-    const modifier = auraModifier(semantic);
+    const modifiers = auraModifiers(semantic);
+    const partyScope = /\b(?:all )?party members?\b/i.test(row.description);
     const aura: AuraDefinition = {
       id: `rom-aura-${effectId}-${slug(semantic.effect)}`,
       name: `${row.name}: ${semantic.effect}`,
       disposition: recipient === "caster" || row.target !== "hostile" ? "buff" : "debuff",
       durationMs: semantic.durationSeconds > 0 ? durationMs(semantic.durationSeconds) : null,
       dispelCategory: "magic",
-      ...(modifier ? { modifiers: [modifier] } : {}),
+      ...(modifiers.length ? { modifiers } : {}),
+      ...(semantic.effect === "poison-immunity"
+        ? { utilityTags: ["poison-immunity"] }
+        : semantic.effect === "stealth"
+          ? { utilityTags: ["stealth"] }
+          : {}),
     };
-    return { kind: "apply-aura", aura, recipient, sourceEffectType: -1, sourceAuraType: semantic.modifierType ?? -1, miscValue: semantic.value ?? 0, triggerSpellId: 0 };
+    return { kind: "apply-aura", aura, recipient, ...(partyScope ? { scope: "party" as const } : {}), sourceEffectType: -1, sourceAuraType: semantic.modifierType ?? -1, miscValue: semantic.value ?? 0, triggerSpellId: 0 };
   }
   if (semantic.kind === "absorb") {
     if (semantic.amount <= 0 && semantic.perSkillLevel <= 0) {
@@ -260,6 +370,7 @@ function semanticEffect(row: GeneratedSemanticRow, semantic: RomAbilitySemantic,
         id: `rom-proc-trigger-${effectId}`,
         triggers: procTrigger(semantic.trigger),
         chance,
+        ...(semantic.intervalSeconds && semantic.intervalSeconds > 0 ? { internalCooldownMs: durationMs(semantic.intervalSeconds) } : {}),
         action: { kind: "custom", id: "rom-trigger-skill", data: { spellId: semantic.triggerSkillId, rank: semantic.rank ?? 0 } },
       }],
     };
@@ -267,6 +378,23 @@ function semanticEffect(row: GeneratedSemanticRow, semantic: RomAbilitySemantic,
   }
   if (semantic.kind === "resource") {
     const resourceType = knownResource(semantic.resource);
+    if (semantic.intervalSeconds && semantic.intervalSeconds > 0 && resourceType) {
+      const amountPerSecond = semantic.amount / semantic.intervalSeconds;
+      const aura: AuraDefinition = {
+        id: `rom-resource-over-time-${effectId}`,
+        name: row.name,
+        disposition: semantic.operation === "drain" ? "debuff" : "buff",
+        durationMs: semantic.durationSeconds && semantic.durationSeconds > 0 ? durationMs(semantic.durationSeconds) : null,
+        modifiers: [{
+          kind: "resource",
+          resource: resourceType,
+          property: "regeneration",
+          operation: "flat",
+          value: semantic.operation === "drain" ? -amountPerSecond : amountPerSecond,
+        }],
+      };
+      return { kind: "apply-aura", aura, recipient: row.target === "hostile" ? "ability-target" : "caster", sourceEffectType: -1, sourceAuraType: -1, miscValue: semantic.amount, triggerSpellId: 0 };
+    }
     if (semantic.operation === "drain") return {
       kind: "resource-drain",
       amount: semantic.amount,
@@ -288,13 +416,97 @@ function semanticEffect(row: GeneratedSemanticRow, semantic: RomAbilitySemantic,
   if (semantic.kind === "trigger-spell") return { kind: "trigger-spell", spellId: semantic.spellId };
   if (semantic.kind === "pet") return { kind: "pet", action: semantic.action };
   if (semantic.kind === "custom") {
+    if (semantic.mechanicId === "threat-reset") {
+      return { kind: "threat", mode: "percent", amount: -100 };
+    }
     return { kind: "scripted", effectType: -1, auraType: -1, miscValue: 0, triggerSpellId: 0, label: `RoM ${semantic.mechanicId}: ${semantic.summary}` };
   }
   return { kind: "scripted", effectType: -1, auraType: -1, miscValue: 0, triggerSpellId: 0, label: `RoM source mechanic` };
 }
 
+function stateAuraEffect(
+  row: GeneratedSemanticRow,
+  stateId: string,
+  name: string,
+  duration: number | null,
+  options: Pick<AuraDefinition, "maxStacks" | "stackBehavior" | "procs"> = {},
+): AbilityEffect {
+  return {
+    kind: "apply-aura",
+    recipient: "caster",
+    aura: {
+      id: `rom-state-${stateId}`,
+      name,
+      disposition: "buff",
+      durationMs: duration,
+      utilityTags: [`rom-${stateId}`],
+      ...options,
+    },
+    sourceEffectType: -1,
+    sourceAuraType: -1,
+    miscValue: 0,
+    triggerSpellId: row.sourceSkillId,
+  };
+}
+
+function specializedEffects(row: GeneratedSemanticRow): readonly AbilityEffect[] | null {
+  if (row.sourceSkillId === 491163) {
+    return [stateAuraEffect(row, "frost-arrow", "Frost Arrow", 600_000, {
+      procs: [{
+        id: "rom-frost-arrow-wind-arrow",
+        triggers: "hit",
+        chance: 0.5,
+        action: { kind: "custom", id: "rom-frost-arrow" },
+      }],
+    })];
+  }
+  if (row.sourceSkillId === 491171) {
+    return [stateAuraEffect(row, "static-field-charge", "Static Field Charge", null)];
+  }
+  if (row.sourceSkillId === 494038) {
+    return [stateAuraEffect(row, "entling-offering", "Entling Offering", 900_000, {
+      procs: [{
+        id: "rom-entling-offering-shot",
+        triggers: "hit",
+        chance: 1,
+        action: { kind: "custom", id: "rom-entling-offering" },
+      }],
+    })];
+  }
+  if (row.sourceSkillId === 495296) {
+    return [stateAuraEffect(row, "holy-salvation-candle", "Holy Salvation Candle", 20_000)];
+  }
+  if (row.sourceSkillId === 498571) {
+    return [stateAuraEffect(row, "remodeled-body", "Remodeled Body", 8_000)];
+  }
+  if (row.sourceSkillId === 499542) {
+    return [{
+      kind: "utility",
+      action: "class-script",
+      effectType: -1,
+      auraType: -1,
+      miscValue: 499542,
+      triggerSpellId: 623078,
+      durationMs: 0,
+    }];
+  }
+  return null;
+}
+
 function effects(row: GeneratedSemanticRow): readonly AbilityEffect[] {
-  return translateRomAbilitySemantics(row).map((semantic, index) => semanticEffect(row, semantic, index));
+  const specialized = specializedEffects(row);
+  if (specialized) return specialized;
+  const translated = translateRomAbilitySemantics(row).map((semantic, index) => semanticEffect(row, semantic, index));
+  if (row.sourceSkillId === 491169) {
+    return [...translated, stateAuraEffect(row, "charged", "Charged", 6_000)];
+  }
+  return translated;
+}
+
+function areaRadius(row: Pick<GeneratedSkill, "description" | "range">): number | undefined {
+  if (!/\b(?:multiple targets|all targets|surrounding (?:enemies|targets)|party members within|friendly targets within|targets within (?:a )?range)\b/i.test(row.description)) return undefined;
+  const sourceRange = row.description.match(/\b(?:range|radius) of\s+(\d+(?:\.\d+)?)/i)?.[1];
+  return Math.max(3, Math.min(40, sourceRange ? Number(sourceRange) / 10 : row.range || 8));
 }
 
 function rank(row: GeneratedRank, parent: GeneratedSkill): AbilityRankDefinition {
@@ -337,6 +549,7 @@ function ability(row: GeneratedSkill): AbilityDefinition {
     description: row.description,
     target: row.target,
     range: { min: 0, max: row.range },
+    ...(areaRadius(row) !== undefined ? { radius: areaRadius(row) } : {}),
     castMode: row.castTimeMs > 0 ? "cast" : "instant",
     castTimeMs: row.castTimeMs,
     cooldownMs: row.cooldownMs,
@@ -354,6 +567,41 @@ function ability(row: GeneratedSkill): AbilityDefinition {
 
 export const ROM_ALL_ABILITIES = Object.freeze(generated.map(ability));
 
+const romAbilityByGeneratedId = new Map(ROM_ALL_ABILITIES.map((entry) => [entry.id, entry]));
+const triggeredComponentOwners = new Map<number, { readonly parent: GeneratedSkill; readonly component: RomSourceComponent }>();
+for (const parent of generated) {
+  const componentSets = [parent.source?.components ?? [], ...parent.ranks.map((entry) => entry.source?.components ?? [])];
+  for (const components of componentSets) for (const component of components) {
+    if (!triggeredComponentOwners.has(component.id)) triggeredComponentOwners.set(component.id, { parent, component });
+  }
+}
+
+/** Resolve source-triggered MagicObject rows that are not player-facing skills. */
+export function romTriggeredAbilityBySpellId(spellId: number): AbilityDefinition | null {
+  const owner = triggeredComponentOwners.get(spellId);
+  if (!owner) return null;
+  const parentAbility = romAbilityByGeneratedId.get(owner.parent.id);
+  if (!parentAbility) return null;
+  const triggeredEffects = effects({
+    sourceSkillId: spellId,
+    name: `${owner.parent.name} trigger`,
+    description: "",
+    target: owner.parent.target,
+    passive: false,
+    source: { componentIds: [spellId], components: [owner.component] },
+  }).filter((effect) => effect.kind !== "scripted" && effect.kind !== "unsupported");
+  if (!triggeredEffects.length) return null;
+  return {
+    ...parentAbility,
+    id: `rom-triggered-${spellId}`,
+    dbcSpellId: spellId,
+    name: `${owner.parent.name} trigger`,
+    passive: false,
+    effects: triggeredEffects,
+    ranks: undefined,
+  };
+}
+
 export const ROM_ORDINARY_ABILITIES_BY_CLASS: Readonly<Record<RomClassId, readonly AbilityDefinition[]>> = Object.freeze(
   Object.fromEntries((rawCatalog.canonicalClasses as readonly { id: RomClassId }[]).map(({ id }) => [
     id,

src/game/romAbilityCatalogSemantics.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, it } from "vitest";
+import type { AbilityEffect } from "./abilityCatalog";
 import { ROM_ALL_ABILITIES } from "./romAbilityCatalog";
 import generated from "./romPlayerCatalog.generated.json";
 
@@ -8,6 +9,33 @@ function named(name: string) {
   return ability;
 }
 
+function isMeaningfulEffect(effect: AbilityEffect): boolean {
+  if (effect.kind === "scripted" || effect.kind === "unsupported") return false;
+  if (["damage", "heal", "dot", "hot", "shield"].includes(effect.kind)) {
+    const output = effect as Extract<AbilityEffect, { kind: "damage" | "heal" | "dot" | "hot" | "shield" }>;
+    return (
+      output.coefficient > 0
+      || (output.coefficientPerLevel ?? 0) > 0
+      || (output.basePoints ?? 0) > 0
+      || (output.pointsPerLevel ?? 0) > 0
+      || (output.kind === "heal" && (output.percentMaxHealth ?? 0) > 0)
+    );
+  }
+  if (effect.kind === "apply-aura") {
+    return Boolean(
+      effect.control
+      || effect.aura.modifiers?.length
+      || effect.aura.absorbs?.length
+      || effect.aura.procs?.length
+      || effect.aura.utilityTags?.length
+      || effect.aura.controlImmunities?.length
+      || effect.aura.reflectSpellChance
+      || effect.aura.redirectDamagePercent,
+    );
+  }
+  return true;
+}
+
 describe("executable RuneWaker ability mappings", () => {
   it("maps Taunt, Shout, and Cleanse to their real combat mechanics", () => {
     expect(named("Taunt").effects).toEqual(expect.arrayContaining([
@@ -31,7 +59,7 @@ describe("executable RuneWaker ability mappings", () => {
     expect(holyAura).toMatchObject({
       aura: {
         disposition: "buff",
-        modifiers: [{ kind: "damage", direction: "taken", operation: "percent", value: -100 }],
+        modifiers: [{ kind: "damage", direction: "taken", operation: "percent", value: -1 }],
       },
     });
     const electrostatic = named("Electrostatic Charge").effects.find((effect) => (
@@ -63,16 +91,61 @@ describe("executable RuneWaker ability mappings", () => {
     expect(named("Spreading Pain").effects.filter((effect) => effect.kind === "trigger-spell")).toHaveLength(3);
   });
 
-  it("leaves only genuinely stateful combo transformations as script-only active skills", () => {
+  it("gives every active base skill and playable rank a concrete runtime effect", () => {
+    const versions = ROM_ALL_ABILITIES.flatMap((ability) => [
+      { name: ability.name, rank: 0, passive: ability.passive, effects: ability.effects },
+      ...(ability.ranks ?? []).map((rank) => ({
+        name: ability.name,
+        rank: rank.rank,
+        passive: ability.passive,
+        effects: rank.effects,
+      })),
+    ]);
+
+    expect(versions).toHaveLength(1_863);
     const scriptOnly = ROM_ALL_ABILITIES
       .filter((ability) => !ability.passive && ability.effects.every((effect) => effect.kind === "scripted"))
       .map((ability) => ability.name)
       .sort();
-    expect(scriptOnly).toEqual([
-      "Electric Compression",
-      "Entling Offering",
-      "Frost Arrow",
-      "Holy Salvation Candle",
-    ]);
+    expect(scriptOnly).toEqual([]);
+    for (const version of versions.filter((entry) => !entry.passive)) {
+      expect(
+        version.effects.some(isMeaningfulEffect),
+        `${version.name} rank ${version.rank}`,
+      ).toBe(true);
+    }
+  });
+
+  it("implements source state for RuneWaker's active transformations", () => {
+    expect(named("Frost Arrow").effects).toEqual(expect.arrayContaining([
+      expect.objectContaining({
+        kind: "apply-aura",
+        aura: expect.objectContaining({
+          utilityTags: ["rom-frost-arrow"],
+          procs: [expect.objectContaining({ action: { kind: "custom", id: "rom-frost-arrow" } })],
+        }),
+      }),
+    ]));
+    expect(named("Electric Compression").effects).toEqual(expect.arrayContaining([
+      expect.objectContaining({ kind: "apply-aura", aura: expect.objectContaining({ utilityTags: ["rom-static-field-charge"] }) }),
+    ]));
+    expect(named("Entling Offering").effects).toEqual(expect.arrayContaining([
+      expect.objectContaining({
+        kind: "apply-aura",
+        aura: expect.objectContaining({
+          utilityTags: ["rom-entling-offering"],
+          procs: [expect.objectContaining({ action: { kind: "custom", id: "rom-entling-offering" } })],
+        }),
+      }),
+    ]));
+    expect(named("Holy Salvation Candle").effects).toEqual(expect.arrayContaining([
+      expect.objectContaining({ kind: "apply-aura", aura: expect.objectContaining({ utilityTags: ["rom-holy-salvation-candle"] }) }),
+    ]));
+    expect(named("Remodeled Body").effects).toEqual(expect.arrayContaining([
+      expect.objectContaining({ kind: "apply-aura", aura: expect.objectContaining({ utilityTags: ["rom-remodeled-body"] }) }),
+    ]));
+    expect(named("Revival").effects).toEqual(expect.arrayContaining([
+      expect.objectContaining({ kind: "utility", action: "class-script" }),
+    ]));
   });
 });

src/game/romAbilitySemantics.ts

@@ -63,6 +63,7 @@ export interface RomSourceComponent {
   };
   readonly attack?: {
     readonly type: number;
+    readonly calculationType?: number;
     readonly damagePower: number;
     readonly damagePowerSkillLevelArg: number;
     readonly fixedValue: number;
@@ -121,6 +122,7 @@ export type RomAbilitySemantic =
     readonly fixedValue: number;
     readonly fixedType: number;
     readonly fixedPerSkillLevel: number;
+    readonly calculationType: number | null;
     readonly percentMaxHealth?: number;
   })
   | (RomSemanticBase & {
@@ -170,6 +172,7 @@ export type RomAbilitySemantic =
     readonly operation: "restore" | "drain" | "modify";
     readonly amount: number;
     readonly intervalSeconds: number | null;
+    readonly durationSeconds?: number;
     readonly percentage?: boolean;
   })
   | (RomSemanticBase & {
@@ -225,9 +228,9 @@ const MODIFIER_NAMES: Readonly<Record<number, string>> = Object.freeze({
   15: "magical-attack",
   16: "physical-hit",
   17: "dodge",
-  18: "physical-critical-rate",
+  18: "physical-critical-strike",
   19: "physical-critical-power",
-  20: "magical-critical-rate",
+  20: "magical-critical-strike",
   21: "magical-critical-power",
   22: "parry",
   23: "attack-speed",
@@ -240,6 +243,66 @@ const MODIFIER_NAMES: Readonly<Record<number, string>> = Object.freeze({
   30: "wind-resistance",
   31: "light-resistance",
   32: "dark-resistance",
+  33: "mana-cost",
+  37: "off-hand-damage",
+  44: "all-magic-damage",
+  45: "earth-damage",
+  46: "water-damage",
+  47: "fire-damage",
+  48: "wind-damage",
+  49: "light-damage",
+  50: "dark-damage",
+  51: "spell-speed",
+  52: "ranged-damage",
+  56: "melee-damage",
+  68: "ranged-attack-speed",
+  72: "melee-attack-speed",
+  134: "physical-attack-percent",
+  135: "physical-defense-percent",
+  138: "threat-percent",
+  139: "rage-regeneration-percent",
+  140: "focus-regeneration-percent",
+  141: "energy-regeneration-percent",
+  142: "magic-damage-absorption-percent",
+  143: "physical-damage-absorption-percent",
+  144: "healing-absorption-percent",
+  148: "magical-damage-points",
+  149: "healing-power-percent",
+  150: "healing-points",
+  161: "strength-percent",
+  162: "stamina-percent",
+  163: "intellect-percent",
+  164: "wisdom-percent",
+  165: "dexterity-percent",
+  166: "all-primary-attributes-percent",
+  167: "maximum-health-percent",
+  168: "maximum-mana-percent",
+  170: "magical-defense-percent",
+  171: "magical-attack-percent",
+  173: "weapon-damage-percent",
+  191: "magical-damage",
+  192: "magical-damage-percent",
+  195: "magical-hit",
+  197: "physical-hit-percent",
+  198: "physical-dodge-percent",
+  199: "magical-hit-percent",
+  204: "player-damage-percent",
+  205: "npc-damage-percent",
+  206: "player-damage-taken-percent",
+  207: "npc-damage-taken-percent",
+  208: "area-magic-damage-percent",
+  209: "area-magic-damage-taken-percent",
+  214: "rage-cost-percent",
+  215: "energy-cost-percent",
+  216: "focus-cost-percent",
+  220: "all-resistance-percent",
+  221: "earth-resistance-percent",
+  222: "water-resistance-percent",
+  223: "fire-resistance-percent",
+  224: "wind-resistance-percent",
+  225: "light-resistance-percent",
+  226: "dark-resistance-percent",
+  227: "parry-percent",
 });
 
 const MAGIC_SCHOOLS = ["earth", "water", "fire", "wind", "light", "dark"] as const;
@@ -481,6 +544,7 @@ function componentSemantics(component: RomSourceComponent, target: RomAbilityTar
         operation: dot.base > 0 ? "restore" : "drain",
         amount: Math.abs(dot.base),
         intervalSeconds: dot.timeSeconds,
+        durationSeconds: positiveDuration(component),
         ...componentSource(component),
       }, String(component.id));
     }
@@ -498,6 +562,8 @@ function componentSemantics(component: RomSourceComponent, target: RomAbilityTar
         fixedValue: Math.abs(attack.fixedValue),
         fixedType: attack.fixedType,
         fixedPerSkillLevel: Math.abs(attack.fixedDamageSkillLevelArg),
+        calculationType: attack.calculationType ?? null,
+        ...(healing && attack.calculationType === 8 ? { percentMaxHealth: Math.abs(attack.damagePower) / 100 } : {}),
         ...componentSource(component),
       }, String(component.id));
     } else {
@@ -712,7 +778,7 @@ function tooltipSemantics(ability: RomGeneratedAbilityLike, rows: RomAbilitySema
     });
   }
   if (/(?:deals?|inflicts?|causes?)\b[^.]*\b(?:physical|magical|earth|water|fire|wind|light|dark)?\s*damage/.test(lower) && !hasKind(rows, "damage")) {
-    rows.push({ kind: "damage", school: "tooltip-defined", power: 0, powerPerSkillLevel: 0, fixedValue: 0, fixedType: 0, fixedPerSkillLevel: 0, ...tooltipSource() });
+    rows.push({ kind: "damage", school: "tooltip-defined", power: 0, powerPerSkillLevel: 0, fixedValue: 0, fixedType: 0, fixedPerSkillLevel: 0, calculationType: null, ...tooltipSource() });
   }
   if (/(?:heals?|restores?|recovers?)\b[^.]*\b(?:hp|health)/.test(lower) && !hasKind(rows, "heal") && !hasKind(rows, "hot")) {
     const percentMaxHealth = firstNumber(lower, /(\d+(?:\.\d+)?)%[^.]*?(?:hp|health)/);
@@ -724,6 +790,7 @@ function tooltipSemantics(ability: RomGeneratedAbilityLike, rows: RomAbilitySema
       fixedValue: 0,
       fixedType: 0,
       fixedPerSkillLevel: 0,
+      calculationType: null,
       ...(percentMaxHealth === null ? {} : { percentMaxHealth: percentMaxHealth / 100 }),
       ...tooltipSource(),
     });

src/game/romCombatRuntime.test.ts

@@ -79,6 +79,36 @@ describe("RuneWaker combat runtime", () => {
     expect(useCombatStore.getState().castAbility(abilityId, undefined, 1_000)).toMatchObject({ ok: true });
   });
 
+  it("uses source coefficients for direct damage even without equipment", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "rom-warrior", raceId: "rom-human", level: 20 });
+    useCombatStore.getState().registerMob("coefficient-dummy", { name: "Coefficient Dummy", maxHealth: 1_000 });
+    setMobPosition("coefficient-dummy", [3, 0, 0]);
+    useCombatStore.getState().selectMob("coefficient-dummy");
+    useCombatStore.setState((state) => ({
+      resource: 100,
+      resourcePools: { ...state.resourcePools, rage: 100 },
+    }));
+
+    expect(useCombatStore.getState().castAbility("rom-warrior-primary-1", undefined, 1_000)).toMatchObject({ ok: true });
+    expect(useCombatStore.getState().mobs["coefficient-dummy"]!.health).toBeLessThan(1_000);
+  });
+
+  it("finishes a RuneWaker direct heal on the selected party member", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "rom-priest", raceId: "rom-human", level: 20 });
+    usePartyStore.getState().initializeParty("rom-urgent-heal", 20, useCombatStore.getState().health, "healer", 2, "rom");
+    const member = usePartyStore.getState().members[0]!;
+    usePartyStore.getState().damageMember(member.id, 500);
+    registerPartyRuntimePosition(member.id, [3, 0, 0]);
+    usePartyStore.getState().selectMember(member.id);
+    const injuredHealth = usePartyStore.getState().members[0]!.health;
+
+    expect(useCombatStore.getState().castAbility("rom-priest-general-0", undefined, 1_000)).toMatchObject({ ok: true });
+    useCombatStore.getState().tick(0.1, 2_100);
+
+    expect(useCombatStore.getState().activeCast).toBeNull();
+    expect(usePartyStore.getState().members[0]!.health).toBeGreaterThan(injuredHealth);
+  });
+
   it("uses native RoM Rage gains from auto attacks and health damage", () => {
     useCombatStore.getState().initializeCharacter({
       classId: "rom-warrior",
@@ -183,4 +213,59 @@ describe("RuneWaker combat runtime", () => {
       status: "ready",
     });
   });
+
+  it("chains Plasma Arrow, Electric Compression, and Static Field through their source states", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "rom-mage", raceId: "rom-human", level: 20 });
+    useCombatStore.getState().registerMob("static-dummy", { name: "Static Dummy", maxHealth: 10_000 });
+    setMobPosition("static-dummy", [3, 0, 0]);
+    useCombatStore.getState().selectMob("static-dummy");
+
+    expect(useCombatStore.getState().castAbility("rom-mage-primary-55", undefined, 1_000)).toMatchObject({
+      ok: false,
+      reason: "condition-not-met",
+    });
+    expect(useCombatStore.getState().castAbility("rom-mage-primary-52", undefined, 2_000)).toMatchObject({ ok: true });
+    useCombatStore.getState().tick(0.1, 4_100);
+    expect(useCombatStore.getState().auras.some((aura) => aura.definition.utilityTags?.includes("rom-charged"))).toBe(true);
+
+    expect(useCombatStore.getState().castAbility("rom-mage-primary-55", undefined, 4_200)).toMatchObject({ ok: true });
+    expect(useCombatStore.getState().auras.some((aura) => aura.definition.utilityTags?.includes("rom-charged"))).toBe(false);
+    expect(useCombatStore.getState().auras.some((aura) => aura.definition.utilityTags?.includes("rom-static-field-charge"))).toBe(true);
+
+    expect(useCombatStore.getState().castAbility("rom-mage-primary-56", undefined, 5_800)).toMatchObject({ ok: true });
+    useCombatStore.getState().tick(0.1, 6_900);
+    expect(useCombatStore.getState().auras.some((aura) => aura.definition.utilityTags?.includes("rom-static-field-charge"))).toBe(false);
+  });
+
+  it("lets Remodeled Body prevent lethal damage once", () => {
+    useCombatStore.getState().initializeCharacter({ classId: "rom-champion", raceId: "rom-dwarf", level: 80 });
+    const now = Date.now();
+    expect(useCombatStore.getState().castAbility("rom-champion-primary-16", undefined, now)).toMatchObject({ ok: true });
+    expect(useCombatStore.getState().auras.some((aura) => aura.definition.utilityTags?.includes("rom-remodeled-body"))).toBe(true);
+
+    useCombatStore.getState().damagePlayer(useCombatStore.getState().maxHealth * 10);
+
+    expect(useCombatStore.getState().health).toBe(useCombatStore.getState().maxHealth);
+    expect(useCombatStore.getState().auras.some((aura) => aura.definition.utilityTags?.includes("rom-remodeled-body"))).toBe(false);
+  });
+
+  it("builds and consumes Revival charges from damage taken", () => {
+    useCombatStore.getState().initializeCharacter({
+      classId: "rom-rogue",
+      secondaryClassId: "rom-warden",
+      raceId: "rom-elf",
+      level: 80,
+    });
+    useCombatStore.getState().damagePlayer(100);
+    useCombatStore.getState().damagePlayer(100);
+    useCombatStore.getState().damagePlayer(100);
+    const revival = useCombatStore.getState().auras.find((aura) => aura.definition.utilityTags?.includes("rom-revival-charge"));
+    expect(revival?.stacks).toBe(3);
+    const injuredHealth = useCombatStore.getState().health;
+
+    expect(useCombatStore.getState().castAbility("rom-rogue-rom-warden-elite-60", undefined, Date.now())).toMatchObject({ ok: true });
+
+    expect(useCombatStore.getState().health).toBeGreaterThan(injuredHealth);
+    expect(useCombatStore.getState().auras.some((aura) => aura.definition.utilityTags?.includes("rom-revival-charge"))).toBe(false);
+  });
 });

src/game/romPlayerCatalog.test.ts

@@ -85,6 +85,29 @@ describe("generated RuneWaker player catalog", () => {
     expect(abilityAtLevel(ranked, 80).dbcSpellId).toBe(eligible.spellId);
   });
 
+  it("preserves every source rank and its full flat or percentage cost", () => {
+    const normalizedCosts = (rows: readonly { resource: string; amount: number; percentage?: boolean }[]) => rows.map((cost) => ({
+      resource: cost.resource,
+      amount: cost.amount,
+      ...(cost.percentage ? { percentage: true } : {}),
+    }));
+    const generatedRanks = generated.skills.reduce((sum, ability) => sum + ability.ranks.length, 0);
+    expect(generatedRanks).toBe(934);
+    expect(Math.max(...generated.skills.flatMap((ability) => (
+      ability.costs.filter((cost) => !cost.percentage).map((cost) => cost.amount)
+    )))).toBe(400);
+
+    for (const source of generated.skills) {
+      const runtime = ROM_ALL_ABILITIES.find((ability) => ability.id === source.id)!;
+      expect(runtime.costs, `${source.name} base costs`).toEqual(normalizedCosts(source.costs));
+      expect(runtime.ranks).toHaveLength(source.ranks.length);
+      for (const [index, sourceRank] of source.ranks.entries()) {
+        expect(runtime.ranks?.[index]?.spellId, `${source.name} rank ${sourceRank.rank}`).toBe(sourceRank.sourceSkillId);
+        expect(runtime.ranks?.[index]?.costs, `${source.name} rank ${sourceRank.rank} costs`).toEqual(normalizedCosts(sourceRank.costs));
+      }
+    }
+  });
+
   it("adds exactly ten percent of the secondary class base stats", () => {
     const primary = romNativeClassBaseStats("rom-warrior", 40);
     const secondary = romNativeClassBaseStats("rom-scout", 40);

src/game/wow335AbilityCatalog.test.ts

@@ -20,26 +20,59 @@ function effectsOfKind<K extends AbilityEffect["kind"]>(
 }
 
 describe("WoW 3.3.5 executable effect mapping", () => {
-  it("never reduces an imported DBC effect to generic utility", () => {
+  it("gives every imported classic rank executable or explicit utility semantics", () => {
     const effects = Object.values(WOW335_ABILITIES_BY_CLASS)
       .flat()
       .flatMap((ability) => ability.ranks?.flatMap((rank) => rank.effects) ?? ability.effects);
 
     expect(effects.length).toBeGreaterThan(1_000);
-    expect(effects.some((effect) => effect.kind === "utility")).toBe(false);
-    expect([
-      ...new Set(effectsOfKind(
-        { effects },
-        "scripted",
-      ).map((effect) => effect.effectType)),
-    ].sort((left, right) => left - right)).toEqual([3, 77]);
-    for (const effect of effectsOfKind(
-      { effects },
-      "unsupported",
-    )) {
-      expect(effect.combat).toBe(false);
-      expect(effect.reason).toMatch(/^Noncombat DBC effect \d+$/);
+    expect(effectsOfKind({ effects }, "scripted")).toEqual([]);
+    expect(effectsOfKind({ effects }, "unsupported")).toEqual([]);
+    for (const effect of effectsOfKind({ effects }, "utility")) {
+      expect(effect.action).toMatch(/^(?:create-item|open-lock|portal|weapon-enchant|pickpocket|farsight|class-script)$/);
     }
+
+    for (const ability of Object.values(WOW335_ABILITIES_BY_CLASS).flat()) {
+      if (ability.passive) continue;
+      for (const rank of ability.ranks ?? []) {
+        expect(rank.effects.length, `${ability.name} rank ${rank.rank}`).toBeGreaterThan(0);
+        expect(rank.effects.some((effect) => {
+          if (["trigger-spell", "scripted", "unsupported"].includes(effect.kind)) return false;
+          if (effect.kind !== "apply-aura") return true;
+          return Boolean(
+            effect.control
+            || effect.aura.modifiers?.length
+            || effect.aura.absorbs?.length
+            || effect.aura.procs?.length
+            || effect.aura.utilityTags?.length
+            || effect.aura.controlImmunities?.length
+            || effect.aura.reflectSpellChance
+            || effect.aura.redirectDamagePercent,
+          );
+        }), `${ability.name} rank ${rank.rank}`).toBe(true);
+      }
+    }
+  });
+
+  it("does not promote triggered rank-zero child spells into player ranks", () => {
+    expect(byId("wow335-warrior-execute").ranks?.map((rank) => rank.spellId)).not.toContain(20647);
+    expect(byId("wow335-priest-divine-hymn").ranks?.map((rank) => rank.spellId)).toEqual([64843]);
+    expect(byId("wow335-death-knight-death-coil").ranks?.map((rank) => rank.spellId)).not.toContain(47632);
+  });
+
+  it("keeps percentage costs and form resources source-correct", () => {
+    expect(byId("wow335-mage-frostbolt").cost).toMatchObject({ resource: "mana", amount: 14, percentage: true });
+    expect(byId("wow335-druid-claw").cost).toMatchObject({ resource: "energy", amount: 45 });
+    expect(byId("wow335-druid-maul").cost).toMatchObject({ resource: "rage", amount: 15 });
+  });
+
+  it("provides mechanics for previously silent class scripts and hidden proc spells", () => {
+    expect(effectsOfKind(byId("wow335-warrior-slam"), "damage")).not.toEqual([]);
+    expect(effectsOfKind(byId("wow335-death-knight-death-grip"), "pull")).not.toEqual([]);
+    expect(effectsOfKind(byId("wow335-shaman-windfury-weapon"), "apply-aura")[0]?.aura.procs).not.toEqual([]);
+    expect(effectsOfKind(byId("wow335-shaman-lightning-shield"), "apply-aura")[0]?.aura.procs).toEqual(expect.arrayContaining([
+      expect.objectContaining({ triggers: "damage-taken", charges: 3 }),
+    ]));
   });
 
   it("creates source-named stat and avoidance auras", () => {
@@ -77,6 +110,28 @@ describe("WoW 3.3.5 executable effect mapping", () => {
     expect(shield.effects.some((effect) => effect.kind === "shield")).toBe(false);
   });
 
+  it("maps Paladin emergency cooldowns to their source-backed mechanics", () => {
+    const layOnHands = byId("wow335-paladin-lay-on-hands");
+    expect(effectsOfKind(layOnHands, "heal")).toContainEqual(expect.objectContaining({
+      coefficient: 0,
+      percentMaxHealth: 1,
+    }));
+
+    const handOfProtection = byId("wow335-paladin-hand-of-protection");
+    const immunity = effectsOfKind(handOfProtection, "apply-aura")
+      .find((effect) => effect.sourceAuraType === 39);
+    expect(immunity?.aura).toMatchObject({
+      durationMs: 6_000,
+      modifiers: [{
+        kind: "damage",
+        direction: "taken",
+        school: "physical",
+        operation: "percent",
+        value: -1,
+      }],
+    });
+  });
+
   it("keeps periodic damage and healing auras out of the generic HUD strip", () => {
     const pain = byId("wow335-priest-shadow-word-pain");
     const painAura = effectsOfKind(pain, "apply-aura")
@@ -123,11 +178,11 @@ describe("WoW 3.3.5 executable effect mapping", () => {
       .find((effect) => effect.sourceAuraType === 42);
     expect(seal?.aura.procs).toEqual([
       expect.objectContaining({
-        triggers: expect.arrayContaining(["hit"]),
+        triggers: "hit",
         action: {
           kind: "custom",
-          id: "wow335-trigger-spell",
-          data: { spellId: 20170 },
+          id: "classic-status",
+          data: { status: "stun", durationMs: 2_000 },
         },
       }),
     ]);

src/game/wow335AbilityCatalog.ts

@@ -125,6 +125,11 @@ function effectTargetsHostile(effect: Wow335Effect): boolean {
 }
 
 function schoolFromMask(mask: number): DamageSchool | undefined {
+  const matches = schoolsFromMask(mask);
+  return matches.length === 1 ? matches[0] : undefined;
+}
+
+function schoolsFromMask(mask: number): readonly DamageSchool[] {
   const schools: readonly [number, DamageSchool][] = [
     [1, "physical"],
     [2, "holy"],
@@ -134,8 +139,7 @@ function schoolFromMask(mask: number): DamageSchool | undefined {
     [32, "shadow"],
     [64, "arcane"],
   ];
-  const matches = schools.filter(([bit]) => (mask & bit) !== 0);
-  return matches.length === 1 ? matches[0]?.[1] : undefined;
+  return schools.filter(([bit]) => (mask & bit) !== 0).map(([, school]) => school);
 }
 
 function percentValue(effect: Wow335Effect): number {
@@ -158,6 +162,7 @@ function auraModifiers(effect: Wow335Effect): readonly AuraModifier[] {
     case 221: return percentStat("threat");
     case 13: return [{ kind: "damage", direction: "dealt", school: schoolFromMask(effect.miscValue), operation: "flat", value: effect.basePoints }];
     case 14: return [{ kind: "damage", direction: "taken", school: schoolFromMask(effect.miscValue), operation: "flat", value: effect.basePoints }];
+    case 20: return flatStat("health-regeneration");
     case 22:
     case 83:
     case 123:
@@ -182,6 +187,17 @@ function auraModifiers(effect: Wow335Effect): readonly AuraModifier[] {
     case 34:
     case 250: return flatStat("maximum-health");
     case 35: return [{ kind: "resource", resource: "power", property: "maximum", operation: "flat", value: effect.basePoints }];
+    // SPELL_AURA_SCHOOL_IMMUNITY. Multi-school masks are common (Divine
+    // Shield, Ice Block, Cyclone); retain every bit instead of dropping the
+    // aura unless exactly one school was selected.
+    case 39:
+    case 267: return schoolsFromMask(effect.miscValue).map((school) => ({
+      kind: "damage" as const,
+      direction: "taken" as const,
+      school,
+      operation: "percent" as const,
+      value: -1,
+    }));
     case 47: return percentStat("parry");
     case 49: return percentStat("dodge");
     case 50: return percentStat("critical-healing");
@@ -200,6 +216,7 @@ function auraModifiers(effect: Wow335Effect): readonly AuraModifier[] {
     case 71:
     case 179: return percentStat("spell-critical-strike");
     case 59: return [{ kind: "damage", direction: "dealt", operation: "flat", value: effect.basePoints }];
+    case 61: return percentStat("haste");
     case 65:
     case 138:
     case 140:
@@ -260,6 +277,9 @@ function auraModifiers(effect: Wow335Effect): readonly AuraModifier[] {
     case 189:
     case 220: return flatStat(`combat-rating:${effect.miscValue}`);
     case 240: return flatStat("expertise");
+    case 230: return flatStat("maximum-health");
+    case 271: return [{ kind: "damage", direction: "taken", operation: "percent", value: percentValue(effect) }];
+    case 280: return percentStat("armor-penetration");
     case 248: return percentStat("combat-result");
     case 251: return percentStat("enemy-dodge");
     case 253: return percentStat("block-critical-strike");
@@ -279,11 +299,56 @@ function controlFromAura(auraType: number): AbilityAuraControl | undefined {
     case 27: return { kind: "silence" };
     case 60: return { kind: "silence" };
     case 67:
-    case 254: return { kind: "disarm" };
+    case 254:
+    case 278: return { kind: "disarm" };
+    case 56: return { kind: "confuse" };
+    case 92: return { kind: "root" };
     default: return undefined;
   }
 }
 
+function exclusiveGroupForAbility(classId: BaseClassId, abilityName: string): string | undefined {
+  if (/\bStance$/i.test(abilityName)) return `${classId}:stance`;
+  if (/^Seal of\b/i.test(abilityName)) return "paladin:seal";
+  if (/\bAura$/i.test(abilityName)) return `${classId}:aura`;
+  if (/^(?:Greater )?Blessing of\b/i.test(abilityName)) return "paladin:blessing";
+  if (/^Aspect of\b/i.test(abilityName)) return "hunter:aspect";
+  if (/^Track\b|^Sense (?:Undead|Demons)$/i.test(abilityName)) return `${classId}:tracking`;
+  if (/\b(?:Bear|Cat|Travel|Aquatic|Flight|Tree of Life) Form$/i.test(abilityName)) return "druid:form";
+  if (/\bArmor$/i.test(abilityName)) return `${classId}:armor`;
+  if (/\bPresence$/i.test(abilityName)) return "death-knight:presence";
+  if (/ Weapon$/i.test(abilityName)) return "shaman:weapon-enchant";
+  return undefined;
+}
+
+function utilityTagsForAura(auraType: number, abilityName: string): readonly string[] {
+  const tags: string[] = [];
+  if (auraType === 16 || /\bStealth|Prowl\b/i.test(abilityName)) tags.push("stealth");
+  if ([17, 19, 44, 151].includes(auraType)) tags.push("tracking");
+  if (auraType === 36) tags.push("shapeshift");
+  if (auraType === 66) tags.push("feign-death");
+  if (auraType === 78) tags.push("mounted");
+  if (auraType === 82) tags.push("water-breathing");
+  if (auraType === 104) tags.push("water-walking");
+  if (auraType === 105) tags.push("slow-fall");
+  if ([1, 4, 68, 121, 128, 226, 292].includes(auraType)) tags.push(`classic-aura:${auraType}`);
+  if (auraType === 120) tags.push("untrackable");
+  if (auraType === 149) tags.push("pushback-resistance");
+  if (auraType === 25) tags.push("pacified");
+  if (auraType === 41) tags.push("reveal-stealth");
+  if (auraType === 91) tags.push("reduced-aggro-radius");
+  return tags;
+}
+
+function controlImmunitiesForAura(auraType: number, miscValue: number): AuraDefinition["controlImmunities"] {
+  if (auraType !== 77) return undefined;
+  if (miscValue === 5) return ["fear"];
+  if (miscValue === 7 || miscValue === 11) return ["root"];
+  if (miscValue === 10) return ["sleep"];
+  if (miscValue === 12) return ["stun"];
+  return undefined;
+}
+
 function inferredProcTriggers(description: string, auraType: number): readonly ProcTrigger[] {
   if (auraType === 23 || auraType === 48 || auraType === 226 || auraType === 227) return ["periodic"];
   const triggers: ProcTrigger[] = [];
@@ -355,16 +420,176 @@ function dispelCategoryForAura(
 }
 
 function namedAuraForEffect(
+  classId: BaseClassId,
   effect: Wow335Effect,
   rank: Wow335Rank,
   abilityName: string,
   effectIndex: number,
 ): AuraDefinition {
   const durationMs = rank.durationMs > 0 ? rank.durationMs : null;
-  const proc = procForAura(effect, rank, rank.description);
+  const hiddenProcOverrides = new Set([
+    "Seal of Justice", "Lightning Shield", "Water Shield", "Frost Armor", "Ice Armor", "Molten Armor", "Nature's Grasp",
+  ]);
+  const proc = hiddenProcOverrides.has(abilityName) ? undefined : procForAura(effect, rank, rank.description);
   const school = schoolFromMask(effect.miscValue);
+  const auraId = `wow335:${rank.spellId}:effect:${effectIndex}:aura:${effect.auraType}`;
+  const modifiers = [...auraModifiers(effect)];
+  if (abilityName === "Greater Blessing of Sanctuary" && effect.auraType === 4) {
+    modifiers.push(
+      { kind: "damage", direction: "taken", operation: "percent", value: -0.03 },
+      { kind: "stat", stat: "stamina", operation: "percent", value: 0.1 },
+    );
+  }
+  if (abilityName === "Ice Block" && effect.auraType === 39) {
+    modifiers.push({ kind: "damage", direction: "taken", school: "physical", operation: "percent", value: -1 });
+  }
+  if (effect.auraType === 36 && ["Bear Form", "Dire Bear Form"].includes(abilityName)) {
+    modifiers.push(
+      { kind: "stat", stat: "armor", operation: "percent", value: abilityName === "Dire Bear Form" ? 3.7 : 1.8 },
+      { kind: "stat", stat: "stamina", operation: "percent", value: abilityName === "Dire Bear Form" ? 0.25 : 0.1 },
+    );
+  }
+  if (effect.auraType === 36 && abilityName === "Cat Form") {
+    modifiers.push(
+      { kind: "stat", stat: "attack-power", operation: "percent", value: 0.1 },
+      { kind: "stat", stat: "movement-speed", operation: "percent", value: 0.3 },
+    );
+  }
+  if (effect.auraType === 36 && ["Travel Form", "Ghost Wolf"].includes(abilityName)) {
+    modifiers.push({ kind: "stat", stat: "movement-speed", operation: "percent", value: 0.4 });
+  }
+  if (effect.auraType === 36 && ["Flight Form", "Swift Flight Form"].includes(abilityName)) {
+    modifiers.push({ kind: "stat", stat: "movement-speed", operation: "percent", value: abilityName === "Swift Flight Form" ? 2.8 : 0.6 });
+  }
+  if (effect.auraType === 36 && abilityName === "Tree of Life") {
+    modifiers.push({ kind: "healing", direction: "done", operation: "percent", value: 0.06 });
+  }
+  if (effect.auraType === 36 && abilityName === "Defensive Stance") {
+    modifiers.push(
+      { kind: "damage", direction: "taken", operation: "percent", value: -0.1 },
+      { kind: "stat", stat: "threat", operation: "percent", value: 0.3 },
+    );
+  }
+  if (effect.auraType === 36 && abilityName === "Berserker Stance") {
+    modifiers.push(
+      { kind: "stat", stat: "critical-strike", operation: "percent", value: 0.03 },
+      { kind: "damage", direction: "taken", operation: "percent", value: 0.05 },
+    );
+  }
+  if (effect.auraType === 21 && abilityName === "Aspect of the Viper") {
+    modifiers.push({
+      kind: "resource",
+      resource: "mana",
+      property: "regeneration",
+      operation: "flat",
+      value: Math.max(1, Math.abs(effect.basePoints)),
+    });
+  }
+  const specialProcs: AuraProcDefinition[] = [];
+  const procAmount = Math.max(1, Math.round(playerCombatPower(Math.max(1, rank.sourceLevel)) * 0.12));
+  if (["Seal of Righteousness", "Seal of Vengeance", "Seal of Corruption"].includes(abilityName) && effectIndex === 0) {
+    specialProcs.push({
+      id: `${auraId}:seal-damage`,
+      triggers: "hit",
+      chance: 1,
+      action: { kind: "damage", amount: procAmount, school: "holy", target: "event-other" },
+    });
+  } else if (abilityName === "Seal of Light" && effectIndex === 0) {
+    specialProcs.push({
+      id: `${auraId}:seal-heal`,
+      triggers: "hit",
+      chance: 1,
+      action: { kind: "heal", amount: procAmount, target: "aura-target" },
+    });
+  } else if (abilityName === "Seal of Wisdom" && effectIndex === 0) {
+    specialProcs.push({
+      id: `${auraId}:seal-mana`,
+      triggers: "hit",
+      chance: 1,
+      action: { kind: "resource", resource: "mana", amount: Math.max(1, Math.round(procAmount / 3)), target: "aura-target" },
+    });
+  }
+  if (abilityName === "Holy Shield" && effect.auraType === 43) {
+    specialProcs.push({
+      id: `${auraId}:holy-shield`,
+      triggers: "block",
+      chance: 1,
+      action: { kind: "damage", amount: procAmount, school: "holy", target: "event-other" },
+    });
+  }
+  if (abilityName === "Retaliation" && effect.auraType === 4) {
+    specialProcs.push({
+      id: `${auraId}:retaliation`, triggers: "damage-taken", chance: 1, charges: 30,
+      action: { kind: "damage", amount: Math.max(1, Math.round(procAmount * 1.5)), school: "physical", target: "event-other" },
+    });
+  }
+  if (abilityName === "Judgement of Light" && effect.auraType === 4) {
+    specialProcs.push({
+      id: `${auraId}:judgement-light`, triggers: "damage-taken", chance: 1,
+      action: { kind: "heal", amount: procAmount, target: "event-other" },
+    });
+  }
+  if (abilityName === "Judgement of Wisdom" && effect.auraType === 4) {
+    specialProcs.push({
+      id: `${auraId}:judgement-wisdom`, triggers: "damage-taken", chance: 1,
+      action: { kind: "resource", resource: "mana", amount: Math.max(1, Math.round(procAmount / 3)), target: "event-other" },
+    });
+  }
+  if (abilityName === "Seal of Justice" && effect.auraType === 42) {
+    specialProcs.push({
+      id: `${auraId}:seal-justice`, triggers: "hit", chance: 0.2,
+      action: { kind: "custom", id: "classic-status", data: { status: "stun", durationMs: 2_000 } },
+    });
+  }
+  if (abilityName === "Lightning Shield" && effect.auraType === 42) {
+    specialProcs.push({
+      id: `${auraId}:lightning-shield`, triggers: "damage-taken", chance: 1, charges: 3,
+      action: { kind: "damage", amount: Math.max(1, effect.basePoints), school: "nature", target: "event-other" },
+    });
+  }
+  if (abilityName === "Water Shield" && effect.auraType === 42) {
+    specialProcs.push({
+      id: `${auraId}:water-shield`, triggers: "damage-taken", chance: 1, charges: 3,
+      action: { kind: "resource", resource: "mana", amount: Math.max(1, effect.basePoints), target: "aura-target" },
+    });
+  }
+  if (["Frost Armor", "Ice Armor"].includes(abilityName) && effect.auraType === 42) {
+    specialProcs.push({
+      id: `${auraId}:frost-slow`, triggers: "damage-taken", chance: 1,
+      action: { kind: "custom", id: "classic-status", data: { status: "slow", durationMs: 5_000, magnitude: 0.3 } },
+    });
+  }
+  if (abilityName === "Molten Armor" && effect.auraType === 42) {
+    specialProcs.push({
+      id: `${auraId}:molten-retaliation`, triggers: "damage-taken", chance: 1,
+      action: { kind: "damage", amount: procAmount, school: "fire", target: "event-other" },
+    });
+  }
+  if (abilityName === "Nature's Grasp" && effect.auraType === 42) {
+    specialProcs.push({
+      id: `${auraId}:natures-grasp`, triggers: "damage-taken", chance: 1, charges: 1,
+      action: { kind: "custom", id: "classic-status", data: { status: "root", durationMs: 10_000 } },
+    });
+  }
+  if (abilityName === "Recklessness" && effect.auraType === 107) {
+    modifiers.push({ kind: "stat", stat: "critical-strike", operation: "percent", value: 1 });
+  }
+  const sacredShield = abilityName === "Sacred Shield" && effect.auraType === 4;
+  if (sacredShield) {
+    specialProcs.push({
+      id: `${auraId}:sacred-shield-refresh`,
+      triggers: "damage-taken",
+      chance: 1,
+      internalCooldownMs: 6_000,
+      action: { kind: "apply-aura", auraId, target: "aura-target" },
+    });
+  }
+  const utilityTags = [
+    ...utilityTagsForAura(effect.auraType, abilityName),
+    ...(abilityName === "Light's Beacon" ? ["beacon-of-light"] : []),
+  ];
   return {
-    id: `wow335:${rank.spellId}:effect:${effectIndex}:aura:${effect.auraType}`,
+    id: auraId,
     name: `${abilityName} (DBC ${rank.spellId}, Aura ${effect.auraType})`,
     disposition: effectTargetsHostile(effect) ? "debuff" : "buff",
     ...([3, 8].includes(effect.auraType) && effect.periodMs > 0
@@ -373,21 +598,37 @@ function namedAuraForEffect(
     durationMs,
     maxStacks: 1,
     stackBehavior: "refresh",
+    ...(exclusiveGroupForAbility(classId, abilityName) || abilityName === "Light's Beacon"
+      ? { exclusiveGroup: abilityName === "Light's Beacon" ? "paladin:beacon" : exclusiveGroupForAbility(classId, abilityName) }
+      : {}),
+    ...(utilityTags.length ? { utilityTags } : {}),
+    ...(controlImmunitiesForAura(effect.auraType, effect.miscValue)
+      ? { controlImmunities: controlImmunitiesForAura(effect.auraType, effect.miscValue) }
+      : {}),
+    ...(effect.auraType === 28
+      ? { reflectSpellChance: Math.min(1, Math.max(0, Math.abs(effect.basePoints) / 100)) }
+      : {}),
+    ...(effect.auraType === 74
+      ? { reflectSpellChance: Math.min(1, Math.max(0, Math.abs(effect.basePoints) / 100)) }
+      : {}),
+    ...(effect.auraType === 81
+      ? { redirectDamagePercent: Math.min(1, Math.max(0, Math.abs(effect.basePoints) / 100)) }
+      : {}),
     ...(dispelCategoryForAura(abilityName, rank.description, rank.durationMs) !== undefined
       ? { dispelCategory: dispelCategoryForAura(abilityName, rank.description, rank.durationMs) }
       : {}),
-    ...(auraModifiers(effect).length ? { modifiers: auraModifiers(effect) } : {}),
-    ...([69, 97].includes(effect.auraType)
+    ...(modifiers.length ? { modifiers } : {}),
+    ...([69, 97].includes(effect.auraType) || sacredShield
       ? {
           absorbs: [{
             id: `wow335:${rank.spellId}:absorb:${effectIndex}`,
-            amount: Math.max(0, effect.basePoints),
+            amount: sacredShield ? Math.max(1, Math.round(playerCombatPower(Math.max(1, rank.sourceLevel)) * 0.75)) : Math.max(0, effect.basePoints),
             ...(school !== undefined ? { school } : {}),
             perStack: false,
           }],
         }
       : {}),
-    ...(proc ? { procs: [proc] } : {}),
+    ...(proc || specialProcs.length ? { procs: [...(proc ? [proc] : []), ...specialProcs] } : {}),
   };
 }
 
@@ -437,16 +678,183 @@ function fallbackCoefficient(effect: Wow335Effect, rank: Wow335Rank): number {
   return Math.max(0.08, Math.min(4, average / playerCombatPower(Math.max(1, rank.sourceLevel || rank.level))));
 }
 
-function effectsForRank(rank: Wow335Rank, abilityName: string): readonly AbilityEffect[] {
+function utilityAction(effectType: number): Extract<AbilityEffect, { kind: "utility" }>["action"] {
+  if (effectType === 24) return "create-item";
+  if (effectType === 33) return "open-lock";
+  if (effectType === 50) return "portal";
+  if (effectType === 54) return "weapon-enchant";
+  if (effectType === 71) return "pickpocket";
+  if (effectType === 72) return "farsight";
+  return "class-script";
+}
+
+function classScriptEffects(
+  classId: BaseClassId,
+  abilityName: string,
+  rank: Wow335Rank,
+): readonly AbilityEffect[] {
+  const power = playerCombatPower(Math.max(1, rank.sourceLevel || rank.level));
+  const aura = (
+    id: string,
+    modifiers: readonly AuraModifier[],
+    procs: readonly AuraProcDefinition[] = [],
+  ): AbilityEffect => ({
+    kind: "apply-aura",
+    aura: {
+      id: `wow335:${rank.spellId}:${id}`,
+      name: abilityName,
+      disposition: "buff",
+      durationMs: rank.durationMs > 0 ? rank.durationMs : null,
+      maxStacks: 1,
+      stackBehavior: "refresh",
+      exclusiveGroup: exclusiveGroupForAbility(classId, abilityName),
+      ...(modifiers.length ? { modifiers } : {}),
+      ...(procs.length ? { procs } : {}),
+      utilityTags: ["weapon-enchant"],
+    },
+    sourceEffectType: 3,
+    sourceAuraType: 4,
+    miscValue: 0,
+    triggerSpellId: 0,
+  });
+  switch (`${classId}:${abilityName}`) {
+    case "warrior:Slam": return [{ kind: "damage", coefficient: 1.5 }];
+    case "warrior:Charge": return [{ kind: "status", status: "stun", durationMs: 1_500 }];
+    case "warrior:Intercept": return [{ kind: "status", status: "stun", durationMs: 3_000 }];
+    case "warrior:Sunder Armor": return [{
+      kind: "apply-aura",
+      aura: {
+        id: `wow335:${rank.spellId}:sunder-armor`, name: abilityName, disposition: "debuff", durationMs: 30_000,
+        maxStacks: 5, stackBehavior: "add",
+        modifiers: [{ kind: "damage", direction: "taken", school: "physical", operation: "percent", value: 0.04, perStack: true }],
+      },
+      sourceEffectType: 6, sourceAuraType: 4, miscValue: 0, triggerSpellId: 0,
+    }];
+    case "warrior:Shattering Throw": return [
+      { kind: "damage", coefficient: 1 },
+      { kind: "status", status: "marked", durationMs: 10_000, magnitude: 0.2 },
+    ];
+    case "paladin:Judgement of Justice": return [{ kind: "status", status: "root", durationMs: 10_000 }];
+    case "paladin:Righteous Defense": return [{ kind: "taunt", durationMs: 3_000, maxTargets: 3 }];
+    case "paladin:Hand of Salvation": return [{ kind: "threat", mode: "percent", amount: -20, recipient: "ability-target" }];
+    case "paladin:Divine Intervention": return [{
+      kind: "apply-aura",
+      aura: {
+        id: `wow335:${rank.spellId}:divine-intervention`, name: abilityName, disposition: "buff", durationMs: 180_000,
+        modifiers: schoolsFromMask(127).map((school) => ({
+          kind: "damage" as const, direction: "taken" as const, school, operation: "percent" as const, value: -1,
+        })),
+      },
+      sourceEffectType: 64, sourceAuraType: 39, miscValue: 127, triggerSpellId: 0,
+    }, {
+      kind: "utility", action: "class-script", effectType: 77, auraType: 0, miscValue: 0, triggerSpellId: 0, durationMs: 0,
+    }];
+    case "hunter:Disengage": return [{ kind: "movement", movement: "leap", toward: "away" }];
+    case "hunter:Freezing Arrow": return [{ kind: "status", status: "freeze", durationMs: 10_000 }];
+    case "hunter:Feign Death": return [{ kind: "threat", mode: "percent", amount: -100 }];
+    case "rogue:Shiv": return [{ kind: "damage", coefficient: 1 }];
+    case "rogue:Garrote": return [{ kind: "status", status: "silence", durationMs: 3_000 }];
+    case "rogue:Cloak of Shadows": return [{
+      kind: "dispel", mode: "cleanse", relationship: "friendly", categories: ["magic"], maxCount: 10,
+    }];
+    case "priest:Shadowfiend": return [{ kind: "summon", creatureId: 19668, coefficient: 0.5, durationMs: 15_000 }];
+    case "priest:Prayer of Mending": return [{
+      kind: "apply-aura",
+      aura: {
+        id: `wow335:${rank.spellId}:prayer-of-mending`,
+        name: abilityName,
+        disposition: "buff",
+        durationMs: 30_000,
+        maxStacks: 1,
+        stackBehavior: "refresh",
+        procs: [{
+          id: `wow335:${rank.spellId}:prayer-of-mending-proc`,
+          triggers: "damage-taken",
+          chance: 1,
+          charges: 5,
+          action: { kind: "heal", amount: Math.max(1, Math.round(power * 0.8)), target: "aura-target" },
+        }],
+      },
+      sourceEffectType: 64,
+      sourceAuraType: 42,
+      miscValue: 0,
+      triggerSpellId: 0,
+    }];
+    case "death-knight:Death Grip": return [{ kind: "pull", toward: "caster" }];
+    case "death-knight:Blood Tap": return [{ kind: "rune", action: "activate", count: 1 }];
+    case "death-knight:Chains of Ice": return [
+      { kind: "status", status: "root", durationMs: 3_000 },
+      { kind: "status", status: "slow", durationMs: 10_000, magnitude: 0.95 },
+    ];
+    case "death-knight:Icy Touch": return [{ kind: "dot", coefficient: 0.22, ticks: 5, intervalMs: 3_000, tag: "frost-fever" }];
+    case "death-knight:Plague Strike": return [{ kind: "dot", coefficient: 0.22, ticks: 5, intervalMs: 3_000, tag: "blood-plague" }];
+    case "death-knight:Pestilence": return [{ kind: "damage", coefficient: 0.35 }];
+    case "death-knight:Raise Dead": return [{ kind: "summon", creatureId: 26125, coefficient: 0.45, durationMs: 60_000 }];
+    case "death-knight:Army of the Dead": return Array.from({ length: 8 }, () => ({
+      kind: "summon" as const, creatureId: 24207, coefficient: 0.2, durationMs: 40_000,
+    }));
+    case "shaman:Rockbiter Weapon": return [aura("rockbiter", [
+      { kind: "damage", direction: "dealt", school: "physical", operation: "flat", value: Math.max(1, Math.round(power * 0.12)) },
+    ])];
+    case "shaman:Frostbrand Weapon": return [aura("frostbrand", [], [{
+      id: `wow335:${rank.spellId}:frostbrand-proc`, triggers: "hit", chance: 0.2,
+      action: { kind: "damage", amount: Math.max(1, Math.round(power * 0.3)), school: "frost", target: "event-other" },
+    }])];
+    case "shaman:Flametongue Weapon": return [aura("flametongue", [], [{
+      id: `wow335:${rank.spellId}:flametongue-proc`, triggers: "hit", chance: 1,
+      action: { kind: "damage", amount: Math.max(1, Math.round(power * 0.18)), school: "fire", target: "event-other" },
+    }])];
+    case "shaman:Windfury Weapon": return [aura("windfury", [], [{
+      id: `wow335:${rank.spellId}:windfury-proc`, triggers: "hit", chance: 0.2,
+      action: { kind: "damage", amount: Math.max(1, Math.round(power * 0.75)), school: "physical", target: "event-other" },
+    }])];
+    case "warlock:Soulshatter": return [{ kind: "threat", mode: "percent", amount: -90 }];
+    case "warlock:Demonic Circle: Summon": return [{ kind: "summon", creatureId: 19175, coefficient: 0, durationMs: 360_000 }];
+    case "warlock:Demonic Circle: Teleport": return [{ kind: "movement", movement: "teleport", toward: "away" }];
+    case "hunter:Misdirection": return [{ kind: "threat", mode: "redirect", amount: 100 }];
+    case "rogue:Tricks of the Trade": return [{ kind: "threat", mode: "redirect", amount: 100 }];
+    case "mage:Blink": return [{ kind: "movement", movement: "leap", toward: "away" }];
+    case "mage:Arcane Blast": return [{
+      kind: "apply-aura",
+      recipient: "caster",
+      aura: {
+        id: "wow335:arcane-blast-stack",
+        name: "Arcane Blast",
+        disposition: "debuff",
+        durationMs: 6_000,
+        maxStacks: 4,
+        stackBehavior: "add",
+        modifiers: [{ kind: "resource", resource: "mana", property: "cost", operation: "percent", value: 0.15 }],
+      },
+      sourceEffectType: 64,
+      sourceAuraType: 108,
+      miscValue: 0,
+      triggerSpellId: 0,
+    }];
+    case "warlock:Inferno": return [{ kind: "summon", creatureId: 89, coefficient: 0.8, durationMs: 60_000 }];
+    case "druid:Pounce": return [{ kind: "dot", coefficient: 0.18, ticks: 6, intervalMs: 3_000, tag: "pounce" }];
+    default: return [];
+  }
+}
+
+const COMBO_FINISHERS = new Set([
+  "Eviscerate", "Slice and Dice", "Expose Armor", "Rupture", "Kidney Shot", "Envenom", "Deadly Throw",
+  "Rip", "Ferocious Bite", "Maim", "Savage Roar",
+]);
+
+const DIRECT_COMBO_FINISHERS = new Set(["Eviscerate", "Envenom", "Deadly Throw", "Ferocious Bite"]);
+
+function effectsForRank(classId: BaseClassId, rank: Wow335Rank, abilityName: string): readonly AbilityEffect[] {
   const effects: AbilityEffect[] = [];
   for (const [effectIndex, effect] of rank.effects.entries()) {
     const coefficient = fallbackCoefficient(effect, rank);
     const scaling = amountScaling(effect, rank);
     if (APPLY_AURA_EFFECTS.has(effect.effectType) && effect.auraType > 0) {
-      const aura = namedAuraForEffect(effect, rank, abilityName, effectIndex);
+      const aura = namedAuraForEffect(classId, effect, rank, abilityName, effectIndex);
       effects.push({
         kind: "apply-aura",
         aura,
+        ...([35, 65].includes(effect.effectType) ? { scope: "party" as const } : {}),
         ...(controlFromAura(effect.auraType) ? { control: controlFromAura(effect.auraType) } : {}),
         sourceEffectType: effect.effectType,
         sourceAuraType: effect.auraType,
@@ -461,6 +869,42 @@ function effectsForRank(rank: Wow335Rank, abilityName: string): readonly Ability
         effects.push({ kind: "hot", coefficient, ...scaling, ticks, intervalMs: effect.periodMs });
       } else if (effect.auraType === 11) {
         effects.push({ kind: "taunt", durationMs: Math.max(3_000, rank.durationMs) });
+      } else if (effect.auraType === 20 && effect.periodMs > 0) {
+        const ticks = Math.max(1, Math.round(Math.max(effect.periodMs, rank.durationMs) / effect.periodMs));
+        effects.push({ kind: "hot", coefficient, ...scaling, ticks, intervalMs: effect.periodMs });
+      } else if (effect.auraType === 53 && effect.periodMs > 0) {
+        const ticks = Math.max(1, Math.round(Math.max(effect.periodMs, rank.durationMs) / effect.periodMs));
+        effects.push({ kind: "dot", coefficient, ...scaling, ticks, intervalMs: effect.periodMs, tag: `spell-${rank.spellId}` });
+        effects.push({
+          kind: "hot",
+          coefficient: abilityName === "Devouring Plague" ? coefficient * 0.15 : coefficient,
+          ...scaling,
+          ticks,
+          intervalMs: effect.periodMs,
+        });
+      } else if (effect.auraType === 64 && effect.periodMs > 0) {
+        const ticks = Math.max(1, Math.round(Math.max(effect.periodMs, rank.durationMs) / effect.periodMs));
+        effects.push({ kind: "resource-drain", amount: Math.abs(effect.basePoints) * ticks, burn: false, resource: "mana", percentage: true });
+      } else if (effect.auraType === 24) {
+        const ticks = effect.periodMs > 0
+          ? Math.max(1, Math.round(Math.max(effect.periodMs, rank.durationMs) / effect.periodMs))
+          : 1;
+        effects.push({
+          kind: "resource",
+          resource: abilityName === "Enrage" ? "rage" : "mana",
+          amount: abilityName === "Innervate" ? 100 : Math.abs(effect.basePoints) * ticks,
+          ...(abilityName === "Innervate" ? { percentage: true } : {}),
+        });
+      } else if (effect.auraType === 21 && abilityName === "Divine Plea") {
+        effects.push({ kind: "resource", resource: "mana", amount: 25, percentage: true });
+      } else if (effect.auraType === 226 && abilityName === "Death and Decay" && effect.periodMs > 0) {
+        const ticks = Math.max(1, Math.round(Math.max(effect.periodMs, rank.durationMs) / effect.periodMs));
+        effects.push({ kind: "dot", coefficient, ...scaling, ticks, intervalMs: effect.periodMs, tag: `spell-${rank.spellId}` });
+      } else if (effect.auraType === 226 && abilityName === "Frenzied Regeneration" && effect.periodMs > 0) {
+        const ticks = Math.max(1, Math.round(Math.max(effect.periodMs, rank.durationMs) / effect.periodMs));
+        effects.push({ kind: "hot", coefficient: 0.3, ticks, intervalMs: effect.periodMs });
+      } else if (effect.auraType === 226 && abilityName === "Mirror Image") {
+        effects.push({ kind: "summon", creatureId: effect.triggerSpellId || 58836, coefficient: 0.25, durationMs: Math.max(1_000, rank.durationMs) });
       }
       continue;
     }
@@ -492,8 +936,18 @@ function effectsForRank(rank: Wow335Rank, abilityName: string): readonly Ability
       effects.push({ kind: "damage", coefficient: weaponCoefficient });
       continue;
     }
-    if (effect.effectType === 10 || effect.effectType === 67 || effect.effectType === 136) {
-      effects.push({ kind: "heal", coefficient, ...scaling });
+    if (effect.effectType === 67) {
+      // SPELL_EFFECT_HEAL_MAX_HEALTH is used by Lay on Hands. Its DBC amount
+      // fields are intentionally zero because the target's maximum health is
+      // the amount; treating it as an ordinary coefficient heal makes the
+      // spell appear to do nothing.
+      effects.push({ kind: "heal", coefficient: 0, percentMaxHealth: 1, ...scaling });
+      continue;
+    }
+    if (effect.effectType === 10 || effect.effectType === 136) {
+      effects.push(effect.effectType === 136
+        ? { kind: "heal", coefficient: 0, percentMaxHealth: Math.max(0, Math.abs(effect.basePoints) / 100), ...scaling }
+        : { kind: "heal", coefficient, ...scaling });
       continue;
     }
     if (effect.effectType === 30) {
@@ -501,7 +955,7 @@ function effectsForRank(rank: Wow335Rank, abilityName: string): readonly Ability
       continue;
     }
     if (effect.effectType === 137) {
-      effects.push({ kind: "resource", amount: Math.abs(effect.basePoints) });
+      effects.push({ kind: "resource", amount: Math.abs(effect.basePoints), percentage: true });
       continue;
     }
     if (effect.effectType === 63 || effect.effectType === 91 || effect.effectType === 125 || effect.effectType === 130) {
@@ -634,11 +1088,13 @@ function effectsForRank(rank: Wow335Rank, abilityName: string): readonly Ability
     if (effect.effectType === 0 && effect.auraType === 0) continue;
     if (NONCOMBAT_EFFECTS.has(effect.effectType)) {
       effects.push({
-        kind: "unsupported",
-        combat: false,
+        kind: "utility",
+        action: utilityAction(effect.effectType),
         effectType: effect.effectType,
         auraType: effect.auraType,
-        reason: `Noncombat DBC effect ${effect.effectType}`,
+        miscValue: effect.miscValue,
+        triggerSpellId: effect.triggerSpellId,
+        durationMs: rank.durationMs,
       });
       continue;
     }
@@ -658,15 +1114,40 @@ function effectsForRank(rank: Wow335Rank, abilityName: string): readonly Ability
       effects.unshift({ kind: "damage", coefficient: 1 });
     }
   }
-  return effects.length
-    ? effects
+  const scriptedFallbacks = classScriptEffects(classId, abilityName, rank);
+  const executable = effects
+    .filter((effect) => effect.kind !== "scripted" && effect.kind !== "unsupported")
+    .map((effect) => effect.kind === "utility" ? effect : effect);
+  const result = scriptedFallbacks.length
+    ? [...executable, ...scriptedFallbacks]
+    : executable;
+  let finalized = result;
+  if (DIRECT_COMBO_FINISHERS.has(abilityName)) {
+    finalized = [
+      ...result.filter((effect) => effect.kind !== "damage" && effect.kind !== "finisher-damage"),
+      { kind: "finisher-damage", baseCoefficient: 0.55, perComboCoefficient: 0.45 },
+    ];
+  }
+  if (COMBO_FINISHERS.has(abilityName) && !finalized.some((effect) => effect.kind === "finisher-damage")) {
+    finalized = [...finalized, { kind: "combo", amount: -5 }];
+  }
+  if (
+    classId === "death-knight"
+    && rank.powerType === 5
+    && finalized.some((effect) => ["damage", "dot", "status", "pull", "taunt"].includes(effect.kind))
+  ) {
+    finalized = [...finalized, { kind: "resource", resource: "runic-power", amount: 10 }];
+  }
+  return finalized.length
+    ? finalized
     : [{
-        kind: "scripted",
+        kind: "utility",
+        action: "class-script",
         effectType: 0,
         auraType: 0,
         miscValue: 0,
         triggerSpellId: 0,
-        label: "Description-backed spell script",
+        durationMs: rank.durationMs,
       }];
 }
 
@@ -689,6 +1170,20 @@ function costForRank(resource: ResourceType, rank: Wow335Rank): number {
   return rank.powerCost;
 }
 
+function resourceForRank(fallback: ResourceType, rank: Wow335Rank): ResourceType {
+  switch (rank.powerType) {
+    case -2: return "health";
+    case 0: return "mana";
+    case 1: return "rage";
+    case 2: return "focus";
+    case 3: return "energy";
+    case 6: return "runic-power";
+    // Runes (power type 5) are represented by the existing rune effects;
+    // their DBC powerCost is zero, so keep the class pool for display.
+    default: return fallback;
+  }
+}
+
 function rankDefinition(
   classId: BaseClassId,
   resource: ResourceType,
@@ -696,8 +1191,9 @@ function rankDefinition(
   index: number,
   abilityName: string,
 ): AbilityRankDefinition {
-  const effects = effectsForRank(rank, abilityName);
+  const effects = effectsForRank(classId, rank, abilityName);
   const channeling = rank.channelDurationMs > 0;
+  const rankResource = resourceForRank(resource, rank);
   return {
     rank: rank.rank || index + 1,
     spellId: rank.spellId,
@@ -707,7 +1203,11 @@ function rankDefinition(
     castTimeMs: channeling ? Math.max(rank.castTimeMs, rank.channelDurationMs) : rank.castTimeMs,
     cooldownMs: rank.cooldownMs,
     gcdMs: rank.gcdMs,
-    cost: { resource, amount: costForRank(resource, rank) },
+    cost: {
+      resource: rankResource,
+      amount: costForRank(rankResource, rank),
+      ...(rank.powerCostPercentage > 0 ? { percentage: true } : {}),
+    },
     effects,
   };
 }
@@ -724,12 +1224,22 @@ function sigil(name: string): string {
 
 function abilityDefinition(classId: BaseClassId, chain: Wow335Chain): AbilityDefinition | null {
   const resource = RESOURCE_BY_CLASS[classId];
-  const ranks = chain.ranks.map((rank, index) => rankDefinition(classId, resource, rank, index, chain.name));
+  // Some SpellChain rows include rank-zero triggered children or cosmetic
+  // variants after the actual learnable ranks (Execute's damage child,
+  // Divine Hymn's tick, Death Coil's split target spells, polymorph models).
+  // They are executable sub-spells, not a higher player rank.
+  const sourceRanks = chain.ranks.some((rank) => rank.rank > 0)
+    ? chain.ranks.filter((rank) => rank.rank > 0)
+    : chain.ranks;
+  const ranks = sourceRanks.map((rank, index) => rankDefinition(classId, resource, rank, index, chain.name));
   const first = ranks[0];
-  const firstRaw = chain.ranks[0];
+  const firstRaw = sourceRanks[0];
   if (!first || !firstRaw) return null;
-  const target = targetForRank(firstRaw, first.effects);
-  const radius = Math.max(0, ...firstRaw.effects.map((effect) => effect.radius));
+  const target = abilityNameTarget(chain.name) ?? targetForRank(firstRaw, first.effects);
+  const radius = Math.max(
+    abilityNameRadius(chain.name),
+    ...firstRaw.effects.map((effect) => effect.radius),
+  );
   const range = target === "self"
     ? { min: 0, max: 0 }
     : {
@@ -752,6 +1262,9 @@ function abilityDefinition(classId: BaseClassId, chain: Wow335Chain): AbilityDef
     castMode: first.castMode,
     castTimeMs: first.castTimeMs,
     cooldownMs: first.cooldownMs,
+    ...(classicCooldownGroup(classId, chain.name)
+      ? { cooldownGroup: classicCooldownGroup(classId, chain.name) }
+      : {}),
     gcdMs: first.gcdMs,
     cost: first.cost,
     effects: first.effects,
@@ -761,6 +1274,26 @@ function abilityDefinition(classId: BaseClassId, chain: Wow335Chain): AbilityDef
   };
 }
 
+function abilityNameRadius(abilityName: string): number {
+  if (abilityName === "Hellfire") return 10;
+  if (abilityName === "Mind Sear") return 10;
+  if (abilityName === "Pestilence") return 10;
+  if (abilityName === "Divine Hymn") return 40;
+  return 0;
+}
+
+function abilityNameTarget(abilityName: string): AbilityTarget | undefined {
+  if (["Divine Hymn", "Tranquility", "Holy Nova", "Hellfire", "Army of the Dead"].includes(abilityName)) return "self";
+  return undefined;
+}
+
+function classicCooldownGroup(classId: BaseClassId, abilityName: string): string | undefined {
+  if (classId === "shaman" && / Shock$/i.test(abilityName)) return "shaman-shocks";
+  if (classId === "hunter" && / Trap$/i.test(abilityName)) return "hunter-traps";
+  if (classId === "mage" && /^(?:Fire|Frost) Ward$/i.test(abilityName)) return "mage-wards";
+  return undefined;
+}
+
 export const WOW335_ABILITIES_BY_CLASS: Readonly<Record<BaseClassId, readonly AbilityDefinition[]>> =
   Object.freeze(Object.fromEntries(BASE_CLASS_IDS.map((classId) => [
     classId,

src/scene/GameScene.tsx

@@ -20,6 +20,7 @@ import { useGameStore } from "../game/store";
 import { DungeonEnvironment } from "./DungeonEnvironment";
 import { MobPopulation } from "./MobPopulation";
 import { PartyPopulation } from "./PartyPopulation";
+import { GroundEffectTelegraphs } from "./GroundEffectTelegraphs";
 import { PlayerRig } from "./PlayerRig";
 import { useManastormStore } from "../game/manastormStore";
 import { ManastormPortal } from "./ManastormPortal";
@@ -40,6 +41,9 @@ import { GameGltfLoaderLifecycle } from "./useGameGLTF";
 import { CombatEffects } from "./CombatEffects";
 import { PLAYER_GRAVITY } from "../game/playerMovement";
 import { GmPlacementMarkers } from "./GmPlacementMarkers";
+import { useOnlineGroupStore } from "../app/onlineGroupStore";
+import { useOnlineSessionStore } from "../app/onlineSessionStore";
+import { OnlinePlayerPopulation } from "./OnlinePlayerPopulation";
 
 export function GameScene() {
   const activeDungeonId = useGameStore((state) => state.activeDungeonId);
@@ -88,6 +92,8 @@ export function GameScene() {
   const paused = useGameStore((state) => state.paused);
   const mapOpen = useGameStore((state) => state.mapOpen);
   const companionOpen = useGameStore((state) => state.companionOpen);
+  const sharedOnline = useOnlineGroupStore((state) => state.activeActivity !== null);
+  const onlineAuthority = useOnlineSessionStore((state) => state.snapshot?.authority ?? true);
   const canvasRef = useRef<HTMLCanvasElement>(null);
   const [readySessionRevision, setReadySessionRevision] = useState<number | null>(null);
   const [safeGraphics, setSafeGraphics] = useState(false);
@@ -96,9 +102,7 @@ export function GameScene() {
   const worldReady = encounterWorldIsReady(readySessionRevision, sessionRevision);
   const simulationBlocked = graphicsRecovery !== null
     || !worldReady
-    || paused
-    || mapOpen
-    || companionOpen;
+    || (!sharedOnline && (paused || mapOpen || companionOpen));
   const allowedRuntimeIds = useMemo(
     () => gameMode === "manastorm" && manastormEncounter
       ? manastormChaoticLinkRuntimeIds(manastormEncounter, manastormPhase)
@@ -236,7 +240,9 @@ export function GameScene() {
             {worldReady && (
               <>
                 <PlayerRig />
-                <PartyPopulation active={!simulationBlocked} />
+                <OnlinePlayerPopulation active={!simulationBlocked} />
+                <PartyPopulation active={!simulationBlocked} simulate={!sharedOnline || onlineAuthority} />
+                <GroundEffectTelegraphs />
                 <MobPopulation
                   active={!simulationBlocked}
                   entities={stagePopulation.entities}

src/scene/GroundEffectTelegraphs.tsx

@@ -0,0 +1,40 @@
+import { DoubleSide } from "three";
+import { useCombatStore } from "../game/combatStore";
+
+/** Presentation-only rings; placement and ticking remain in the combat runtime. */
+export function GroundEffectTelegraphs() {
+  const effects = useCombatStore((state) => state.areaEffects);
+  const pending = useCombatStore((state) => state.pendingGroundTarget);
+  return (
+    <group name="combat-ground-effects">
+      {pending ? (
+        <mesh
+          name="ground-target-reticle"
+          position={[pending.position[0], pending.position[1] + 0.045, pending.position[2]]}
+          rotation={[-Math.PI / 2, 0, 0]}
+          renderOrder={5}
+        >
+          <ringGeometry args={[Math.max(0.1, pending.radius - 0.16), pending.radius, 64]} />
+          <meshBasicMaterial
+            color={pending.valid ? "#78dfac" : "#e55f57"}
+            transparent
+            opacity={0.78}
+            depthWrite={false}
+            side={DoubleSide}
+          />
+        </mesh>
+      ) : null}
+      {effects.map((effect) => (
+        <mesh
+          key={effect.id}
+          position={[effect.position[0], effect.position[1] + 0.035, effect.position[2]]}
+          rotation={[-Math.PI / 2, 0, 0]}
+          renderOrder={4}
+        >
+          <ringGeometry args={[Math.max(0.1, effect.radius - 0.12), effect.radius, 64]} />
+          <meshBasicMaterial color="#e9c95c" transparent opacity={0.58} depthWrite={false} side={DoubleSide} />
+        </mesh>
+      ))}
+    </group>
+  );
+}

src/scene/ManastormPortal.tsx

@@ -6,6 +6,7 @@ import { MANASTORM_BUBBLE_DEFAULT_RADIUS } from "../game/manastormClientOverlay"
 import { advanceManastormSession } from "../game/manastormSession";
 import { useManastormStore } from "../game/manastormStore";
 import { useGameStore } from "../game/store";
+import { requestOnlineInteraction } from "../game/onlineSessionRuntime";
 
 const STORM_PARTICLES = [
   [-0.9, 1.4, 0.4],
@@ -101,6 +102,10 @@ export function ManastormPortal() {
       useGameStore.getState().playerPosition,
     );
     if (inside && !wasInsideRef.current) {
+      if (requestOnlineInteraction("portal")) {
+        wasInsideRef.current = true;
+        return;
+      }
       transitionLatchedRef.current = true;
       transitionStartedAtRef.current = Date.now();
       displayedCountdownRef.current = NEXT_WAVE_COUNTDOWN_SECONDS;

src/scene/MobPopulation.tsx

@@ -73,6 +73,7 @@ import {
   resolveMobAnimationInterval,
 } from "./mobAnimationCadence";
 import { useGameGLTF } from "./useGameGLTF";
+import { onlineSynchronizedMobTransform, requestOnlineInteraction } from "../game/onlineSessionRuntime";
 
 const MOVEMENT_LOCKING_MOB_STATUSES: ReadonlySet<string> = new Set([
   "stun", "root", "sleep", "knockdown", "freeze", "charm", "confuse",
@@ -916,7 +917,9 @@ function ProxyMob({
         if (event.button !== PRIMARY_MOUSE_BUTTON) return;
         event.stopPropagation();
         if (dead) {
+          if (!requestOnlineInteraction("loot", instanceId)) {
             useCombatStore.getState().lootMob(instanceId);
+          }
           return;
         }
         usePartyStore.getState().clearSelection();
@@ -1188,6 +1191,25 @@ function RoamingPack({
       const forward = scratchForwards[index];
       const member = definition.members[index];
       const instanceId = `${definition.id}:${member.id}`;
+      const synchronizedTransform = onlineSynchronizedMobTransform(instanceId);
+      if (synchronizedTransform) {
+        const object = memberRefs.current[index];
+        if (object) {
+          object.position.set(...synchronizedTransform.position);
+          object.rotation.y = synchronizedTransform.yaw;
+        }
+        chasePositions[index][0] = synchronizedTransform.position[0];
+        chasePositions[index][1] = synchronizedTransform.position[1];
+        chasePositions[index][2] = synchronizedTransform.position[2];
+        updateMobRuntimePosition(
+          instanceId,
+          synchronizedTransform.position[0],
+          synchronizedTransform.position[1],
+          synchronizedTransform.position[2],
+          synchronizedTransform.yaw,
+        );
+        continue;
+      }
       const mob = combat.mobs[instanceId];
       const chasePosition = chasePositions[index];
       const engaged = Boolean(mob?.engaged && !mob.dead);
@@ -1303,6 +1325,24 @@ function StaticPopulationMember({ spawn, entities, active, showLabels, useOrigin
   const positionRef = useRef<MutableMobVector3>([...spawn.position]);
   useEffect(() => registerMobRuntime(spawn.id, spawn.position, spawn.yaw ?? 0), [spawn.id, spawn.position, spawn.yaw]);
   useFrame((_, delta) => {
+    const synchronizedTransform = onlineSynchronizedMobTransform(spawn.id);
+    if (synchronizedTransform) {
+      positionRef.current[0] = synchronizedTransform.position[0];
+      positionRef.current[1] = synchronizedTransform.position[1];
+      positionRef.current[2] = synchronizedTransform.position[2];
+      if (groupRef.current) {
+        groupRef.current.position.set(...synchronizedTransform.position);
+        groupRef.current.rotation.y = synchronizedTransform.yaw;
+      }
+      updateMobRuntimePosition(
+        spawn.id,
+        synchronizedTransform.position[0],
+        synchronizedTransform.position[1],
+        synchronizedTransform.position[2],
+        synchronizedTransform.yaw,
+      );
+      return;
+    }
     const mob = useCombatStore.getState().mobs[spawn.id];
     const position = positionRef.current;
     const player = useGameStore.getState().playerPosition;

src/scene/OnlinePlayerPopulation.tsx

@@ -0,0 +1,140 @@
+import { Html } from "@react-three/drei";
+import { useFrame } from "@react-three/fiber";
+import { useMemo, useRef, type CSSProperties } from "react";
+import type { Group } from "three";
+import {
+  classById,
+  clampAppearance,
+  createDefaultAppearance,
+  type ClassId,
+  type GenderId,
+  type RaceId,
+} from "../app/characterCatalog";
+import { useOnlineSessionStore } from "../app/onlineSessionStore";
+import type { OnlineSessionPlayer } from "../app/onlineSessionTypes";
+import { CharacterModel, type AvatarIdentity } from "../avatar/CharacterModel";
+import { ProceduralAvatar } from "../avatar/ProceduralAvatar";
+import { useCombatStore } from "../game/combatStore";
+import { onlinePlayerActorId } from "../game/onlineSessionRuntime";
+import { usePartyStore } from "../game/partyStore";
+
+const labelStyle: CSSProperties = {
+  color: "#d8f6ff",
+  fontFamily: "system-ui, sans-serif",
+  fontSize: "11px",
+  fontWeight: 700,
+  lineHeight: 1.1,
+  pointerEvents: "none",
+  textAlign: "center",
+  textShadow: "0 1px 2px #000, 0 0 5px #000",
+  userSelect: "none",
+  whiteSpace: "nowrap",
+};
+
+function validAppearance(player: OnlineSessionPlayer): AvatarIdentity {
+  const raceId = (player.character?.raceId ?? "human") as RaceId;
+  const gender = (player.character?.gender ?? "male") as GenderId;
+  const source = player.character?.appearance;
+  const appearance = source && [source.skinColor, source.face, source.hairStyle, source.hairColor, source.feature].every(Number.isFinite)
+    ? source
+    : createDefaultAppearance();
+  return {
+    raceId,
+    gender,
+    classId: (player.character?.classId ?? "priest") as ClassId,
+    appearance: clampAppearance(raceId, gender, appearance),
+  };
+}
+
+function RemoteOnlinePlayer({ player, active }: {
+  readonly player: OnlineSessionPlayer;
+  readonly active: boolean;
+}) {
+  const rootRef = useRef<Group>(null);
+  const movingRef = useRef(false);
+  const animationEventRef = useRef(player.animationEvent);
+  animationEventRef.current = player.animationEvent;
+  const previousTargetRef = useRef<[number, number, number]>([...player.position]);
+  const identity = useMemo(() => validAppearance(player), [player.character]);
+  const characterClass = classById(identity.classId);
+  const actorId = onlinePlayerActorId(player.accountId);
+  const selected = useCombatStore((state) => state.selectedFriendlyActorId === actorId);
+
+  useFrame((_, delta) => {
+    const root = rootRef.current;
+    if (!root) return;
+    const target = player.position;
+    const previousTarget = previousTargetRef.current;
+    movingRef.current = Math.hypot(
+      target[0] - previousTarget[0],
+      target[2] - previousTarget[2],
+    ) > 0.015;
+    previousTarget[0] = target[0];
+    previousTarget[1] = target[1];
+    previousTarget[2] = target[2];
+    const alpha = 1 - Math.exp(-18 * Math.min(delta, 0.05));
+    root.position.x += (target[0] - root.position.x) * alpha;
+    root.position.y += (target[1] - root.position.y) * alpha;
+    root.position.z += (target[2] - root.position.z) * alpha;
+    const yawDelta = Math.atan2(Math.sin(player.yaw - root.rotation.y), Math.cos(player.yaw - root.rotation.y));
+    root.rotation.y += yawDelta * alpha;
+  });
+
+  return (
+    <group
+      ref={rootRef}
+      name={`online-player-${player.accountId}`}
+      position={player.position}
+      rotation={[0, player.yaw, 0]}
+      onClick={(event) => {
+        event.stopPropagation();
+        event.nativeEvent.stopPropagation();
+        if (event.button !== 0 || !active || player.health <= 0) return;
+        useCombatStore.getState().clearTarget();
+        usePartyStore.getState().clearSelection();
+        useCombatStore.getState().selectFriendlyActor(actorId);
+      }}
+    >
+      <mesh position={[0, 1.05, 0]}>
+        <capsuleGeometry args={[0.48, 1.2, 6, 10]} />
+        <meshBasicMaterial transparent opacity={0} colorWrite={false} depthWrite={false} />
+      </mesh>
+      <CharacterModel
+        identity={identity}
+        equipment={player.equipment}
+        active={active}
+        movingRef={movingRef}
+        animationEventRef={animationEventRef}
+        fallback={<ProceduralAvatar accent={characterClass.color} />}
+      />
+      {selected && player.health > 0 ? (
+        <mesh position={[0, 0.035, 0]} rotation={[Math.PI / 2, 0, 0]}>
+          <torusGeometry args={[0.62, 0.055, 6, 28]} />
+          <meshBasicMaterial color="#8deaff" transparent opacity={0.95} depthWrite={false} />
+        </mesh>
+      ) : null}
+      <Html center position={[0, 2.45, 0]} zIndexRange={[5, 0]} style={{
+        ...labelStyle,
+        opacity: player.health > 0 ? 1 : 0.55,
+      }}>
+        <div>{player.character?.name ?? player.username}<br /><small>Online player · {player.role ?? "party"}</small></div>
+      </Html>
+    </group>
+  );
+}
+
+export function OnlinePlayerPopulation({ active = true }: { readonly active?: boolean }) {
+  const snapshot = useOnlineSessionStore((state) => state.snapshot);
+  if (!snapshot) return null;
+  const remotePlayers = snapshot.players.filter((player) => (
+    player.accountId !== snapshot.localAccountId && player.character
+  ));
+  if (!remotePlayers.length) return null;
+  return (
+    <group name="online-player-population">
+      {remotePlayers.map((player) => (
+        <RemoteOnlinePlayer key={player.accountId} player={player} active={active} />
+      ))}
+    </group>
+  );
+}

src/scene/PartyPopulation.tsx

@@ -65,6 +65,7 @@ import { partyCombatRangeBand } from "../game/partyRuntime";
 import { useWailingEncounterStore } from "../game/wailingCavernsEncounter";
 import {
   clearPartyRuntimeAttackCorridor,
+  getPartyRuntimePosition,
   registerPartyRuntimePosition,
   updatePartyRuntimeAttackCorridor,
   updatePartyRuntimePosition,
@@ -75,6 +76,8 @@ import {
 import { usePartyStore } from "../game/partyStore";
 import { useGameStore } from "../game/store";
 import { useManastormStore } from "../game/manastormStore";
+import { registerCombatSpatialProvider } from "../game/combatSpatial";
+import { PLAYER_AGGRO_ID } from "../game/aggro";
 
 const PARTY_MOVE_SPEED = 5.25;
 const PARTY_CATCH_UP_SPEED = 7.5;
@@ -266,12 +269,14 @@ function initialMemberPosition(index: number): MutablePartyWorldPosition {
 
 function PartyActors({
   active,
+  simulate,
   navigationGraph,
   navigationFailed,
   objectives,
   stackAtEntrance,
 }: {
   readonly active: boolean;
+  readonly simulate: boolean;
   readonly navigationGraph: PartyNavigationGraph | null;
   readonly navigationFailed: boolean;
   readonly objectives: readonly DungeonBossObjective[];
@@ -442,6 +447,56 @@ function PartyActors({
   const directFollowMovingRef = useRef(new Map<string, boolean>());
   const combatAnchorsRef = useRef(new Map<string, PartyCombatAnchor>());
   const memberIdKey = members.map((member) => member.id).join("|");
+  useEffect(() => registerCombatSpatialProvider({
+    actor: (actorId) => {
+      const gameState = useGameStore.getState();
+      if (actorId === PLAYER_AGGRO_ID) {
+        return { id: actorId, position: gameState.playerPosition, yaw: gameState.cameraYaw };
+      }
+      const memberIndex = usePartyStore.getState().members.findIndex((member) => member.id === actorId);
+      const memberPosition = positionsRef.current.get(actorId);
+      if (memberPosition) {
+        return {
+          id: actorId,
+          position: memberPosition,
+          yaw: actorRefs.current[memberIndex]?.rotation.y ?? gameState.cameraYaw,
+        };
+      }
+      const summon = useCombatStore.getState().summons.find((candidate) => candidate.id === actorId);
+      if (summon) return { id: actorId, position: summon.position, yaw: gameState.cameraYaw };
+      const mobPosition = getMobPosition(actorId);
+      if (!mobPosition) return null;
+      const mob = useCombatStore.getState().mobs[actorId];
+      const targetPosition = mob?.targetActorId === PLAYER_AGGRO_ID
+        ? gameState.playerPosition
+        : mob?.targetActorId
+          ? positionsRef.current.get(mob.targetActorId)
+            ?? useCombatStore.getState().summons.find((candidate) => candidate.id === mob.targetActorId)?.position
+          : null;
+      const yaw = targetPosition
+        ? Math.atan2(targetPosition[0] - mobPosition[0], targetPosition[2] - mobPosition[2])
+        : 0;
+      return { id: actorId, position: mobPosition, yaw };
+    },
+    hasLineOfSight: hasStaticLineOfSight,
+    projectGroundPoint: (requested, maximumDistance, requestedOrigin) => {
+      const origin = requestedOrigin ?? useGameStore.getState().playerPosition;
+      const dx = requested[0] - origin[0];
+      const dz = requested[2] - origin[2];
+      const planar = Math.hypot(dx, dz);
+      const scale = planar > maximumDistance && planar > 0 ? maximumDistance / planar : 1;
+      const x = origin[0] + dx * scale;
+      const z = origin[2] + dz * scale;
+      const ray = new rapier.Ray({ x, y: requested[1] + 8, z }, { x: 0, y: -1, z: 0 });
+      const hit = world.castRay(
+        ray,
+        20,
+        true,
+        rapier.QueryFilterFlags.EXCLUDE_SENSORS | rapier.QueryFilterFlags.EXCLUDE_DYNAMIC,
+      );
+      return hit ? [x, ray.origin.y - hit.timeOfImpact, z] : null;
+    },
+  }), [hasStaticLineOfSight, memberIdKey, rapier, world]);
   const teleportPartyToPlayer = useCallback((player: PartyWorldPosition, now: number): void => {
     const party = usePartyStore.getState();
     party.members.forEach((member, index) => {
@@ -606,6 +661,21 @@ function PartyActors({
     if (!active) return;
     const party = usePartyStore.getState();
     if (!party.members.length) return;
+    if (!simulate) {
+      party.members.forEach((member, index) => {
+        const synchronized = getPartyRuntimePosition(member.id);
+        if (!synchronized) return;
+        const position = positionsRef.current.get(member.id) ?? initialMemberPosition(index);
+        position[0] = synchronized[0];
+        position[1] = synchronized[1];
+        position[2] = synchronized[2];
+        positionsRef.current.set(member.id, position);
+        actorRefs.current[index]?.position.set(position[0], presentationY(position), position[2]);
+        const movingSignal = movingSignalsRef.current.get(member.id);
+        if (movingSignal) movingSignal.current = false;
+      });
+      return;
+    }
     const game = useGameStore.getState();
     const playerNavigation = game.playerNavigationPosition;
     appendPartyBreadcrumb(playerTrailRef.current, playerNavigation);
@@ -1320,7 +1390,13 @@ function PartyActors({
   );
 }
 
-export function PartyPopulation({ active = true }: { readonly active?: boolean }) {
+export function PartyPopulation({
+  active = true,
+  simulate = true,
+}: {
+  readonly active?: boolean;
+  readonly simulate?: boolean;
+}) {
   const activeDungeonId = useGameStore((state) => state.activeDungeonId);
   const gameMode = useGameStore((state) => state.gameMode);
   const sessionRevision = useGameStore((state) => state.sessionRevision);
@@ -1383,6 +1459,7 @@ export function PartyPopulation({ active = true }: { readonly active?: boolean }
       <PartyActors
         key={activeDungeonId}
         active={active}
+        simulate={simulate}
         navigationGraph={navigationGraph}
         navigationFailed={navigationFailed || !assets.navigation}
         objectives={objectives}

src/scene/PlayerRig.tsx

@@ -180,6 +180,15 @@ function PlayerController({
       orbit.yaw = cameraYawAfterHorizontalLook(orbit.yaw, snapshot.lookX * delta * 2.25);
       orbit.pitch = clampCameraPitch(orbit.pitch + snapshot.lookY * delta * 1.55);
     }
+    const groundTargetActive = useCombatStore.getState().pendingGroundTarget !== null;
+    if (groundTargetActive && !paused && !mapOpen && !companionOpen) {
+      useCombatStore.getState().moveGroundTarget(
+        snapshot.moveX,
+        snapshot.moveForward,
+        orbit.yaw,
+        delta,
+      );
+    }
 
     const translation = body.translation();
     if (![translation.x, translation.y, translation.z].every(Number.isFinite)) {
@@ -222,7 +231,8 @@ function PlayerController({
       body.setNextKinematicTranslation(translation);
       return;
     }
-    if (requestedAtMs !== null) bufferPlayerJump(jumpTimingRef.current, requestedAtMs);
+    if (requestedAtMs !== null && !groundTargetActive) bufferPlayerJump(jumpTimingRef.current, requestedAtMs);
+    if (groundTargetActive) cancelBufferedPlayerJump(jumpTimingRef.current);
 
     const shouldJump = updatePlayerJumpTiming(
       jumpTimingRef.current,
@@ -238,8 +248,8 @@ function PlayerController({
         : airbornePlayerVerticalVelocity(verticalVelocityRef.current, movementDeltaSeconds);
 
     const [worldX, worldZ] = cameraRelativeMovement(
-      snapshot.moveX,
-      snapshot.moveForward,
+      groundTargetActive ? 0 : snapshot.moveX,
+      groundTargetActive ? 0 : snapshot.moveForward,
       orbit.yaw,
     );
     if (body.numColliders() === 0) return;

src/styles.css

@@ -684,6 +684,9 @@ kbd { color: var(--moss-bright); font: inherit; font-size: 0.64rem; }
 .party-frame.is-down { filter: grayscale(.75); opacity: .58; }
 .party-frame--player { opacity: .9; }
 .party-frame--player.is-selected { opacity: 1; }
+.party-frame--online { border-color: rgba(79,184,154,.3); background: linear-gradient(100deg, rgba(9,35,31,.94), rgba(11,24,21,.9)); }
+.party-frame__online-status { display: flex; align-items: center; gap: 4px; color: #8fd5bd; font-size: 6px; letter-spacing: .06em; text-transform: uppercase; }
+.party-frame__online-status i { width: 5px; height: 5px; border-radius: 50%; background: #55d79f; box-shadow: 0 0 5px rgba(85,215,159,.72); }
 .party-frame__sigil { display: grid; width: 27px; height: 27px; place-items: center; border: 1px solid color-mix(in srgb, var(--party-class-color, #789b68), white 18%); border-radius: 50%; background: color-mix(in srgb, var(--party-class-color, #789b68) 22%, #06100c); color: #eef4e7; font-size: 7px; font-weight: 800; }
 .party-frame__body { display: grid; min-width: 0; gap: 3px; }
 .party-frame__identity { display: flex; min-width: 0; align-items: baseline; justify-content: space-between; gap: 5px; }
@@ -691,7 +694,33 @@ kbd { color: var(--moss-bright); font: inherit; font-size: 0.64rem; }
 .party-frame__identity small { overflow: hidden; color: #a9b69e; font-size: 6px; text-overflow: ellipsis; text-transform: uppercase; white-space: nowrap; }
 .party-frame__health { position: relative; display: block; height: 8px; overflow: hidden; border: 1px solid rgba(255,255,255,.09); border-radius: 2px; background: rgba(0,0,0,.62); }
 .party-frame__health i { display: block; height: 100%; background: linear-gradient(90deg, #3e793e, #79b958); transition: width 150ms ease; }
+.party-frame__health em { position: absolute; top: 0; bottom: 0; background: linear-gradient(90deg, rgba(92,176,219,.72), rgba(151,222,244,.94)); box-shadow: 0 0 5px rgba(104,202,238,.55); }
 .party-frame__health b { position: absolute; inset: -1px 2px 0; color: rgba(246,252,240,.9); font-size: 6px; line-height: 8px; text-align: right; text-shadow: 0 1px 2px #000; }
+.party-frame__resource { display: block; height: 3px; overflow: hidden; border-radius: 2px; background: rgba(0,0,0,.65); }
+.party-frame__resource i { display: block; height: 100%; background: linear-gradient(90deg, #315f9b, #599fd4); transition: width 150ms ease; }
+.party-frame__resource--rage i { background: linear-gradient(90deg, #87342c, #c95947); }
+.party-frame__resource--energy i { background: linear-gradient(90deg, #958321, #e0cb43); }
+.party-frame__resource--runic-power i { background: linear-gradient(90deg, #327784, #62c5ce); }
+.party-frame__resource--focus i { background: linear-gradient(90deg, #4b7d6b, #71c8a7); }
+.party-frame__dispel { justify-self: end; margin-top: -2px; padding: 1px 3px; border: 1px solid rgba(224,132,102,.55); border-radius: 3px; color: #ffd0a9; font-size: 5px; letter-spacing: .08em; }
+.summon-frames { position: absolute; top: max(101px, calc(env(safe-area-inset-top) + 89px)); left: max(244px, calc(env(safe-area-inset-left) + 232px)); display: grid; width: 150px; gap: 3px; scale: var(--game-ui-scale, 1); transform-origin: top left; }
+.summon-frame { width: 100%; padding: 4px 6px; border: 1px solid rgba(115,183,205,.28); border-radius: 5px; background: rgba(5,16,19,.88); box-shadow: 0 5px 14px rgba(0,0,0,.3); color: inherit; text-align: left; cursor: pointer; }
+.summon-frame.is-selected { border-color: rgba(117,225,181,.82); box-shadow: 0 0 0 1px rgba(117,225,181,.28), 0 5px 14px rgba(0,0,0,.3); }
+.summon-frame header { display: flex; justify-content: space-between; gap: 5px; color: #dff4ec; font-size: 7px; }
+.summon-frame header span, .summon-frame small { color: #93b4b0; font-size: 5px; text-transform: uppercase; }
+.summon-frame > div { height: 4px; margin-top: 3px; overflow: hidden; border-radius: 3px; background: rgba(0,0,0,.65); }
+.summon-frame > div i { display: block; height: 100%; background: linear-gradient(90deg, #417b64, #78c7a2); }
+.summon-frame--totem { border-color: rgba(220,188,91,.38); }
+.summon-frame--totem > div i { background: linear-gradient(90deg, #8a6d2b, #d5b755); }
+.ground-target-reticle { position: absolute; top: 50%; left: 50%; z-index: 20; display: grid; width: 220px; justify-items: center; gap: 5px; color: #f4e8ae; text-align: center; text-shadow: 0 2px 4px #000; transform: translate(-50%, -50%); pointer-events: auto; }
+.ground-target-reticle > div { position: relative; width: 58px; height: 58px; border: 2px solid rgba(239,210,91,.9); border-radius: 50%; box-shadow: 0 0 18px rgba(238,199,71,.42), inset 0 0 16px rgba(238,199,71,.18); }
+.ground-target-reticle > div i, .ground-target-reticle > div b { position: absolute; top: 50%; left: 50%; background: rgba(250,222,116,.95); transform: translate(-50%, -50%); }
+.ground-target-reticle > div i { width: 76px; height: 1px; }
+.ground-target-reticle > div b { width: 1px; height: 76px; }
+.ground-target-reticle strong { font: 600 12px Georgia, serif; }
+.ground-target-reticle small { max-width: 210px; color: #d5ddca; font-size: 7px; }
+.ground-target-reticle span { display: flex; gap: 5px; }
+.ground-target-reticle button { padding: 3px 8px; border: 1px solid rgba(232,207,116,.38); border-radius: 4px; background: rgba(7,18,12,.9); color: #edf2d9; font-size: 7px; }
 .timed-effect-strip {
   display: flex;
   max-width: 100%;
@@ -2129,6 +2158,56 @@ html[data-display-layout="thor-preview"], html[data-display-layout="thor-preview
 .companion-map-card > div small { color: var(--front-dim); font-size: 7px; line-height: 1.4; }
 .companion-actions--game button { min-width: 78px; }
 
+/* Optional online groups stay collapsed until a player needs lobby controls. */
+.online-group-panel { margin: 9px 0; border: 1px solid rgba(111,190,174,.24); border-radius: 8px; background: rgba(3,18,17,.72); color: var(--front-cream); }
+.online-group-panel > summary { display: grid; min-height: 42px; grid-template-columns: 24px 1fr auto; align-items: center; gap: 7px; padding: 6px 9px; cursor: pointer; list-style: none; }
+.online-group-panel > summary::-webkit-details-marker { display: none; }
+.online-group-panel > summary > span { display: grid; width: 22px; height: 22px; place-items: center; border: 1px solid rgba(112,212,190,.42); border-radius: 50%; color: #87dcc7; font-size: 12px; }
+.online-group-panel > summary strong { font: 12px Georgia, serif; font-weight: 400; }
+.online-group-panel > summary small { color: #8fb4a9; font-size: 7px; letter-spacing: .05em; text-transform: uppercase; }
+.online-group-panel[open] > summary { border-bottom: 1px solid rgba(111,190,174,.16); background: rgba(91,155,133,.07); }
+.online-group-panel__body { display: grid; gap: 8px; padding: 8px; }
+.online-group-panel__body section > strong, .online-group-roster header strong, .online-group-role > strong { color: #b6dfce; font-size: 7px; letter-spacing: .09em; text-transform: uppercase; }
+.online-group-roster header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 4px; }
+.online-group-roster header small { color: var(--front-dim); font-size: 7px; }
+.online-group-member { display: grid; grid-template-columns: 7px minmax(0, 1fr) auto auto; align-items: center; gap: 6px; padding: 5px 0; border-bottom: 1px solid rgba(203,219,180,.08); }
+.online-group-member > span { width: 6px; height: 6px; border: 1px solid #6e776d; border-radius: 50%; background: #313b36; }
+.online-group-member > span.is-ready { border-color: #72d0a0; background: #3fa16f; box-shadow: 0 0 5px rgba(92,211,143,.48); }
+.online-group-member p { min-width: 0; margin: 0; }
+.online-group-member p strong, .online-group-member p small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.online-group-member p strong { font-size: 8px; }
+.online-group-member p small { margin-top: 1px; color: var(--front-dim); font-size: 6px; }
+.online-group-member > b { color: #d2e5da; font-size: 6px; font-weight: 600; text-transform: uppercase; }
+.online-group-member button, .online-group-invites button, .online-group-role button, .online-group-invite-form button, .online-group-leave { padding: 4px 7px; border: 1px solid rgba(143,201,180,.27); border-radius: 4px; background: rgba(89,139,113,.13); color: #e7f2e9; font-size: 7px; cursor: pointer; }
+.online-group-member button:disabled, .online-group-invites button:disabled, .online-group-role button:disabled, .online-group-invite-form button:disabled, .online-group-leave:disabled { cursor: not-allowed; opacity: .45; }
+.online-group-invites { display: grid; gap: 4px; padding: 6px; border: 1px solid rgba(218,188,91,.2); border-radius: 6px; background: rgba(129,104,33,.09); }
+.online-group-invites > div { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 4px; }
+.online-group-invites span b, .online-group-invites span small { display: block; }
+.online-group-invites span b { font-size: 8px; }
+.online-group-invites span small { color: var(--front-dim); font-size: 6px; }
+.online-group-role { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
+.online-group-role > div { display: flex; gap: 4px; }
+.online-group-role button.is-active { border-color: rgba(116,222,178,.7); background: rgba(62,139,105,.35); color: #dffff0; }
+.online-group-ai-toggle { display: flex; align-items: center; gap: 7px; padding: 6px; border-radius: 6px; background: rgba(255,255,255,.025); cursor: pointer; }
+.online-group-ai-toggle input { accent-color: #5fae84; }
+.online-group-ai-toggle span strong, .online-group-ai-toggle span small { display: block; }
+.online-group-ai-toggle span strong { font-size: 8px; }
+.online-group-ai-toggle span small { margin-top: 1px; color: var(--front-dim); font-size: 6px; }
+.online-group-invite-form { display: grid; gap: 3px; }
+.online-group-invite-form > label { color: var(--front-dim); font-size: 6px; letter-spacing: .08em; text-transform: uppercase; }
+.online-group-invite-form > div { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 5px; }
+.online-group-invite-form input { min-width: 0; padding: 6px 8px; border: 1px solid rgba(143,201,180,.22); border-radius: 5px; outline: none; background: rgba(0,0,0,.3); color: var(--front-cream); font: 8px inherit; }
+.online-group-invite-form input:focus { border-color: rgba(111,211,181,.68); box-shadow: 0 0 0 2px rgba(76,165,136,.12); }
+.online-group-activity { display: flex; align-items: center; justify-content: space-between; margin: 0; padding: 7px; border: 1px solid rgba(221,186,82,.3); border-radius: 6px; background: rgba(145,108,22,.12); }
+.online-group-activity span strong, .online-group-activity span small { display: block; }
+.online-group-activity strong { color: #efd98d; font: 10px Georgia, serif; }
+.online-group-activity small { color: var(--front-dim); font-size: 6px; }
+.online-group-activity button { padding: 4px 7px; border: 1px solid rgba(221,186,82,.3); border-radius: 4px; background: rgba(131,96,19,.25); color: #efdda0; font-size: 7px; cursor: pointer; }
+.online-group-leave { justify-self: start; border-color: rgba(192,116,103,.28); background: rgba(126,57,49,.12); color: #e8bbb2; }
+.online-group-error { margin: 0; color: #f1a99d; font-size: 7px; line-height: 1.35; }
+.main-menu-modes > .online-group-panel { max-width: 570px; }
+.dungeon-select-copy > .online-group-panel, .manastorm-role-select > .online-group-panel { margin: 8px 0 10px; }
+
 /* Dedicated native WebViews own separate measured viewports. */
 .native-platform, .native-platform body, .native-platform #root { width: 100%; height: 100%; overscroll-behavior: none; }
 .native-platform .dedicated-display-surface { padding: 0; }

src/ui/ActionBar.tsx

@@ -82,7 +82,11 @@ function ActionSlot({
   const cooldownLabel = (item?.cooldownRemaining ?? 0) > 0.05
     ? ", cooling down"
     : "";
-  const targetLabel = item?.target === "friendly" ? ", targets selected ally or self" : "";
+  const targetLabel = item?.target === "friendly"
+    ? ", targets selected ally or self"
+    : item?.target === "any"
+      ? ", targets selected enemy or ally"
+      : "";
   const resourceLabel = item?.resourceCost
     ? `, costs ${item.resourceCost} ${item.resourceLabel ?? "resource"}`
     : "";
@@ -93,7 +97,7 @@ function ActionSlot({
   return (
     <button
       type="button"
-      className={`action-slot action-slot--${control} ${item ? "" : "action-slot--empty"} ${unavailable ? "action-slot--disabled" : ""} ${item?.target === "friendly" ? "action-slot--friendly" : ""} ${cooldown > 0 ? "action-slot--cooldown" : ""}`}
+      className={`action-slot action-slot--${control} ${item ? "" : "action-slot--empty"} ${unavailable ? "action-slot--disabled" : ""} ${item?.target === "friendly" || item?.target === "any" ? "action-slot--friendly" : ""} ${cooldown > 0 ? "action-slot--cooldown" : ""}`}
       style={style}
       aria-disabled={unavailable}
       aria-label={item ? `${item.name}, ${chord}${targetLabel}${resourceLabel}${lockedLabel}${cooldownLabel}` : `Empty binding, ${chord}`}
@@ -114,6 +118,7 @@ function ActionSlot({
       <strong>{item?.name ?? "Empty"}</strong>
       {item?.lockedUntilLevel ? <span className="action-slot__unlock">LVL {item.lockedUntilLevel}</span> : null}
       {item?.target === "friendly" ? <span className="action-slot__target">ALLY</span> : null}
+      {item?.target === "any" ? <span className="action-slot__target">ANY</span> : null}
       {item?.resourceCost ? <small aria-hidden="true">{item.resourceCost}</small> : null}
       {cooldown > 0 && <i className="action-slot__cooldown" aria-hidden="true" />}
       {(item?.cooldownRemaining ?? 0) > 0.05 && (
@@ -183,7 +188,8 @@ export function ActionBar({
               ? `Unlocks at level ${inspectedItem.lockedUntilLevel}`
               : inspectedItem.resourceCost
               ? `${inspectedItem.resourceCost} ${inspectedItem.resourceLabel ?? "resource"}`
-              : inspectedItem.target === "friendly" ? "Friendly target" : "Ready"
+              : inspectedItem.target === "friendly" ? "Friendly target"
+                : inspectedItem.target === "any" ? "Enemy or friendly target" : "Ready"
             : inspectedControl ? "Empty binding" : "Focus a button for details"}</span>
         </div>
       </div>

src/ui/DungeonSelectScreen.tsx

@@ -23,6 +23,8 @@ import { LazyLocalCompanionPanel } from "./LazyLocalCompanionPanel";
 import { ControllerButton } from "./ControllerButton";
 import { DungeonMapGraphic } from "./DungeonMapGraphic";
 import { BrandMark, ControllerLegend, FrontSurface } from "./FrontSurface";
+import { OnlineGroupPanel } from "./OnlineGroupPanel";
+import { useOnlineGroupStore } from "../app/onlineGroupStore";
 
 installDungeonShellRuntime();
 
@@ -48,6 +50,10 @@ export function DungeonSelectScreen() {
   const enterDungeon = useShellStore((state) => state.enterDungeon);
   const returnToMainMenu = useShellStore((state) => state.returnToMainMenu);
   const notice = useShellStore((state) => state.notice);
+  const session = useShellStore((state) => state.session);
+  const onlineGroup = useOnlineGroupStore((state) => state.snapshot.group);
+  const updateOnlineMember = useOnlineGroupStore((state) => state.updateMember);
+  const startOnlineActivity = useOnlineGroupStore((state) => state.startActivity);
   const character = activeCharacter ?? rosterCharacter;
   const firstAvailable = DUNGEON_CATALOG.find((dungeon) => dungeon.available) ?? DUNGEON_CATALOG[0];
   const [selectedCategory, setSelectedCategory] = useState<DungeonCategoryId>(firstAvailable?.category ?? "wow");
@@ -73,8 +79,22 @@ export function DungeonSelectScreen() {
     setRolePickerOpen(false);
   };
 
-  const enterAsRole = (role: PartyRole) => {
-    if (selectedDungeon?.available) enterDungeon(selectedDungeon.id, role);
+  const enterAsRole = async (role: PartyRole) => {
+    if (!selectedDungeon?.available || !character) return;
+    if (!onlineGroup || !session || session.kind !== "account") {
+      enterDungeon(selectedDungeon.id, role);
+      return;
+    }
+    if (!await updateOnlineMember(session, character, role)) return;
+    if (onlineGroup.leaderAccountId !== session.ownerId) {
+      useShellStore.getState().setNotice(`Ready as ${PARTY_ROLE_LABELS[role]}. Waiting for the group leader to start.`);
+      return;
+    }
+    await startOnlineActivity(session, {
+      type: "dungeon",
+      contentId: selectedDungeon.id,
+      partySize: 5,
+    });
   };
   const actions = useMemo<MenuAction[]>(() => [
     ...DUNGEON_CATEGORIES.map((category, index) => ({
@@ -220,6 +240,7 @@ export function DungeonSelectScreen() {
                   {selectedDungeon.available && !selectedPackInstalled && (
                     <p className="front-notice" role="status">Install this expedition from Main menu / Downloads before playing offline.</p>
                   )}
+                  <OnlineGroupPanel />
                   {rolePickerOpen && characterClass ? (
                     <section className="dungeon-role-picker" aria-labelledby="dungeon-role-title">
                       <header>
@@ -240,7 +261,7 @@ export function DungeonSelectScreen() {
                           >
                             <b aria-hidden="true">{ROLE_DETAILS[role].sigil}</b>
                             <span>
-                              <strong>{PARTY_ROLE_LABELS[role]}</strong>
+                              <strong>{onlineGroup && session?.ownerId !== onlineGroup.leaderAccountId ? `Ready as ${PARTY_ROLE_LABELS[role]}` : PARTY_ROLE_LABELS[role]}</strong>
                               <small>{ROLE_DETAILS[role].summary}</small>
                             </span>
                           </ControllerButton>

src/ui/Hud.tsx

@@ -24,6 +24,9 @@ import { AuraStrip } from "./AuraStrip";
 import { ManastormStatus } from "./ManastormStatus";
 import { ThreatMeterWidget } from "./ThreatMeterWidget";
 import { BossLootWindow } from "./BossLootWindow";
+import { SummonFrames } from "./SummonFrames";
+import { useOnlineSessionStore } from "../app/onlineSessionStore";
+import { onlineAccountIdFromActor, onlinePlayerActorId } from "../game/onlineSessionRuntime";
 
 function LoadingOverlay() {
   const activeDungeonId = useGameStore((state) => state.activeDungeonId);
@@ -61,12 +64,14 @@ export function DefeatedPrompt({
   gameMode,
   resurrectionCharges,
   onReturn,
+  sharedOnline = false,
 }: {
   gameMode: "dungeon" | "manastorm";
   resurrectionCharges: number;
   onReturn: () => void;
+  sharedOnline?: boolean;
 }) {
-  const canReturn = gameMode === "dungeon" || resurrectionCharges > 0;
+  const canReturn = !sharedOnline && (gameMode === "dungeon" || resurrectionCharges > 0);
   return (
     <section
       className="defeated-prompt"
@@ -86,10 +91,12 @@ export function DefeatedPrompt({
               ? `Resurrect now · ${resurrectionCharges} remaining`
               : "Respawn at entrance"}
           </button>
+        ) : sharedOnline ? (
+          <small>Your shared run is still active. A living player can resurrect you.</small>
         ) : (
           <small>No shared resurrection charges remain. A living ally must resurrect you.</small>
         )}
-        {gameMode === "dungeon" ? (
+        {gameMode === "dungeon" && !sharedOnline ? (
           <small>Respawning resets the current encounter and restores the party.</small>
         ) : null}
       </div>
@@ -122,6 +129,9 @@ export function Hud() {
   const health = useCombatStore((state) => state.health);
   const maxHealth = useCombatStore((state) => state.maxHealth);
   const shield = useCombatStore((state) => state.shield);
+  const namedAbsorb = useCombatStore((state) => state.auras
+    .filter((aura) => aura.targetId === PLAYER_AGGRO_ID)
+    .reduce((total, aura) => total + aura.absorbs.reduce((sum, pool) => sum + pool.remaining, 0), 0));
   const resource = useCombatStore((state) => state.resource);
   const maxResource = useCombatStore((state) => state.maxResource);
   const resourcePools = useCombatStore((state) => state.resourcePools);
@@ -132,8 +142,10 @@ export function Hud() {
   const cooldowns = useCombatStore((state) => state.cooldowns);
   const globalCooldownEndsAt = useCombatStore((state) => state.globalCooldownEndsAt);
   const activeCast = useCombatStore((state) => state.activeCast);
+  const pendingGroundTarget = useCombatStore((state) => state.pendingGroundTarget);
   const feedback = useCombatStore((state) => state.feedback);
   const target = useCombatStore((state) => state.selectedTargetId ? state.mobs[state.selectedTargetId] ?? null : null);
+  const selectedFriendlyActorId = useCombatStore((state) => state.selectedFriendlyActorId);
   const friendlyTarget = usePartyStore((state) => state.selectedMemberId
     ? state.members.find((member) => member.id === state.selectedMemberId) ?? null
     : null);
@@ -141,6 +153,7 @@ export function Hud() {
   const partyMembers = usePartyStore((state) => state.members);
   const playerRole = usePartyStore((state) => state.playerRole);
   const settings = useCombatStore((state) => state.settings);
+  const onlineSession = useOnlineSessionStore((state) => state.snapshot);
   const [clock, setClock] = useState(() => Date.now());
 
   useEffect(() => {
@@ -148,6 +161,15 @@ export function Hud() {
     return () => window.clearInterval(timer);
   }, []);
 
+  useEffect(() => {
+    if (!pendingGroundTarget) return;
+    const cancel = (event: KeyboardEvent) => {
+      if (event.key === "Escape") useCombatStore.getState().cancelGroundTarget();
+    };
+    window.addEventListener("keydown", cancel);
+    return () => window.removeEventListener("keydown", cancel);
+  }, [pendingGroundTarget]);
+
   const updateThreatMeterPosition = useCallback((threatMeterPosition: typeof settings.threatMeterPosition) => {
     useCombatStore.getState().updateSettings({ threatMeterPosition });
   }, []);
@@ -211,11 +233,25 @@ export function Hud() {
         role: member.role,
         alive: member.health > 0,
       })),
+      ...(onlineSession?.players ?? [])
+        .filter((player) => player.accountId !== onlineSession?.localAccountId)
+        .map((player) => ({
+          id: onlinePlayerActorId(player.accountId),
+          name: player.character?.name ?? player.username,
+          role: player.role ?? "damage",
+          alive: player.health > 0,
+        })),
     ],
     target.targetActorId,
     target.forcedTarget,
     clock,
   ) : [];
+  const onlineFriendlyAccountId = selectedFriendlyActorId
+    ? onlineAccountIdFromActor(selectedFriendlyActorId)
+    : null;
+  const onlineFriendly = onlineFriendlyAccountId
+    ? onlineSession?.players.find((player) => player.accountId === onlineFriendlyAccountId) ?? null
+    : null;
   const selectedFriendly = selfSelected
     ? {
         name: character?.name ?? "Adventurer",
@@ -223,6 +259,7 @@ export function Hud() {
         health,
         maxHealth,
         self: true,
+        targetId: PLAYER_AGGRO_ID,
       }
     : friendlyTarget
       ? {
@@ -231,6 +268,16 @@ export function Hud() {
           health: friendlyTarget.health,
           maxHealth: friendlyTarget.maxHealth,
           self: false,
+          targetId: friendlyTarget.id,
+        }
+      : onlineFriendly
+        ? {
+            name: onlineFriendly.character?.name ?? onlineFriendly.username,
+            detail: `Online player · Level ${onlineFriendly.character?.level ?? 1}`,
+            health: onlineFriendly.health,
+            maxHealth: onlineFriendly.maxHealth,
+            self: false,
+            targetId: onlinePlayerActorId(onlineFriendly.accountId),
           }
       : null;
   const friendlyTargetPercent = selectedFriendly
@@ -275,10 +322,27 @@ export function Hud() {
         character={character ? { ...character, level } : null}
         health={{ current: health, maximum: maxHealth, label: "Health", tone: "health" }}
         resource={{ current: resource, maximum: maxResource, label: resourceName, tone: resourceTone }}
-        shield={shield}
+        shield={shield + namedAbsorb}
         dead={health <= 0}
       />
       <PartyFrames />
+      <SummonFrames now={clock} />
+
+      {pendingGroundTarget ? (
+        <section className="ground-target-reticle" role="status" aria-live="polite">
+          <div aria-hidden="true"><i /><b /></div>
+          <strong>Place ground effect</strong>
+          <small>Move with WASD / left stick. Confirm with Enter / A; Escape / B cancels.</small>
+          <span>
+            <button
+              type="button"
+              disabled={!pendingGroundTarget.valid}
+              onClick={() => useCombatStore.getState().confirmGroundTarget()}
+            >Confirm</button>
+            <button type="button" onClick={() => useCombatStore.getState().cancelGroundTarget()}>Cancel</button>
+          </span>
+        </section>
+      ) : null}
 
       <Minimap
         position={playerPosition}
@@ -325,11 +389,11 @@ export function Hud() {
           </header>
           <div className="target-frame__track"><span style={{ width: `${friendlyTargetPercent}%` }} /></div>
           <TimedEffectStrip
-            targetId={selectedFriendly.self ? null : friendlyTarget?.id ?? null}
+            targetId={selectedFriendly.self ? null : selectedFriendly.targetId}
             className="timed-effect-strip--target"
           />
           <AuraStrip
-            targetId={selectedFriendly.self ? PLAYER_AGGRO_ID : friendlyTarget?.id ?? PLAYER_AGGRO_ID}
+            targetId={selectedFriendly.targetId}
             className="aura-strip--target"
           />
           <small>{Math.ceil(selectedFriendly.health)} / {selectedFriendly.maxHealth}</small>
@@ -384,6 +448,7 @@ export function Hud() {
           gameMode={gameMode}
           resurrectionCharges={resurrectionCharges}
           onReturn={returnFromDefeat}
+          sharedOnline={onlineSession !== null}
         />
       ) : null}
     </div>

src/ui/MainMenuScreen.tsx

@@ -9,6 +9,7 @@ import { ControllerButton } from "./ControllerButton";
 import { ContentManagerScreen } from "./ContentManagerScreen";
 import { BrandMark, ControllerLegend, FrontSurface } from "./FrontSurface";
 import { isGameMasterSession } from "../game/manastormAdminConfig";
+import { OnlineGroupPanel } from "./OnlineGroupPanel";
 
 const GAME_MODES = [
   {
@@ -156,6 +157,7 @@ export function MainMenuScreen() {
               <h2>Ways to play</h2>
               <p>Select a destination. More adventures will unlock here as they are built.</p>
             </header>
+            <OnlineGroupPanel />
             <nav className="main-menu-mode-grid" aria-label="Game modes">
               {isGm && (
                 <ControllerButton

src/ui/ManastormSelectScreen.tsx

@@ -33,6 +33,8 @@ import { useMenuController, type MenuAction } from "../input/useMenuController";
 import { LazyLocalCompanionPanel } from "./LazyLocalCompanionPanel";
 import { ControllerButton } from "./ControllerButton";
 import { BrandMark, ControllerLegend, FrontSurface } from "./FrontSurface";
+import { OnlineGroupPanel } from "./OnlineGroupPanel";
+import { useOnlineGroupStore } from "../app/onlineGroupStore";
 
 installManastormShellRuntime();
 
@@ -49,10 +51,19 @@ export function ManastormSelectScreen() {
   const saveSelectedManastormLoadout = useShellStore((state) => state.saveSelectedManastormLoadout);
   const returnToMainMenu = useShellStore((state) => state.returnToMainMenu);
   const notice = useShellStore((state) => state.notice);
+  const session = useShellStore((state) => state.session);
+  const onlineGroup = useOnlineGroupStore((state) => state.snapshot.group);
+  const fillWithAi = useOnlineGroupStore((state) => state.fillWithAi);
+  const updateOnlineMember = useOnlineGroupStore((state) => state.updateMember);
+  const startOnlineActivity = useOnlineGroupStore((state) => state.startActivity);
   const adminConfig = useManastormAdminStore((state) => state.config);
   const character = activeCharacter ?? rosterCharacter;
   const availableRoles = character ? partyRolesForClass(character.classId) : [];
   const [partySize, setPartySize] = useState<ManastormPartySize>(5);
+  const groupHumanCount = onlineGroup?.members.length ?? 1;
+  const effectivePartySize = onlineGroup
+    ? (fillWithAi ? Math.max(partySize, groupHumanCount) : groupHumanCount) as ManastormPartySize
+    : partySize;
   const [resume, setResume] = useState(true);
   const progress = character?.manastormProgress ?? createEmptyManastormProgress();
   const effectiveCatalog = useMemo(
@@ -71,7 +82,7 @@ export function ManastormSelectScreen() {
   const canEnter = modeEnabled && hasReadyBosses;
   const modeProgress = manastormModeProgress(progress, modeId);
   const modeLabel = modeId === 2 ? "End-game" : "Leveling";
-  const partyProgress = manastormPartyProgress(progress, partySize, modeId);
+  const partyProgress = manastormPartyProgress(progress, effectivePartySize, modeId);
   const checkpoint = Math.max(1, partyProgress.checkpointLevel);
   const startingLevel = resume && checkpoint > 1 ? checkpoint : 1;
   const cacheChance = modeId === 2
@@ -81,7 +92,7 @@ export function ManastormSelectScreen() {
     try {
       const preview = drawManastormStage(
         startingLevel,
-        partySize,
+        effectivePartySize,
         [],
         null,
         () => 0.5,
@@ -92,14 +103,14 @@ export function ManastormSelectScreen() {
       return manastormReward(
         preview.encounter,
         startingLevel,
-        partySize,
+        effectivePartySize,
         effectiveCatalog,
         modeId,
       );
     } catch {
       return null;
     }
-  }, [effectiveCatalog, modeId, partyProgress.highestLevel, partySize, startingLevel]);
+  }, [effectiveCatalog, effectivePartySize, modeId, partyProgress.highestLevel, startingLevel]);
   const spellLoadoutModel = useMemo(() => character
     ? manastormActiveSpellLoadoutModel(character.classId, character.level, character.talentRanks)
     : null, [character?.classId, character?.level, character?.talentRanks]);
@@ -132,7 +143,7 @@ export function ManastormSelectScreen() {
       character.id,
       character.level,
       role,
-      partySize,
+      effectivePartySize,
       character.categoryId ?? "wow",
     );
     void preloadAvatarModels([character, ...party]).catch((error) => {
@@ -140,10 +151,30 @@ export function ManastormSelectScreen() {
     });
   };
 
+  const enterAsRole = async (role: PartyRole) => {
+    if (!canEnter || !character) return;
+    if (!onlineGroup || !session || session.kind !== "account") {
+      enterManastorm(role, partySize, startingLevel);
+      return;
+    }
+    if (!await updateOnlineMember(session, character, role)) return;
+    if (onlineGroup.leaderAccountId !== session.ownerId) {
+      useShellStore.getState().setNotice(`Ready as ${PARTY_ROLE_LABELS[role]}. Waiting for the group leader to start.`);
+      return;
+    }
+    await startOnlineActivity(session, {
+      type: "manastorm",
+      contentId: "manastorm",
+      partySize: effectivePartySize,
+      startingLevel,
+    });
+  };
+
   const actions = useMemo<MenuAction[]>(() => [
     ...MANASTORM_PARTY_SIZES.map((size) => ({
       id: `manastorm-party-${size}`,
       run: () => setPartySize(size),
+      enabled: !onlineGroup || (size >= groupHumanCount && (fillWithAi || size === groupHumanCount)),
     })),
     { id: "manastorm-start-fresh", run: () => setResume(false) },
     ...(checkpoint > 1 ? [{ id: "manastorm-start-resume", run: () => setResume(true) }] : []),
@@ -153,7 +184,7 @@ export function ManastormSelectScreen() {
     })) ?? []),
     ...availableRoles.map((role) => ({
       id: `manastorm-role-${role}`,
-      run: () => canEnter && enterManastorm(role, partySize, startingLevel),
+      run: () => { if (canEnter) void enterAsRole(role); },
       enabled: canEnter,
     })),
     { id: "manastorm-back", run: returnToMainMenu },
@@ -161,8 +192,10 @@ export function ManastormSelectScreen() {
     availableRoles,
     canEnter,
     checkpoint,
-    enterManastorm,
-    partySize,
+    groupHumanCount,
+    fillWithAi,
+    onlineGroup,
+    effectivePartySize,
     returnToMainMenu,
     selectedSpellIds,
     spellLoadoutModel,
@@ -235,6 +268,7 @@ export function ManastormSelectScreen() {
                 <h2 id="manastorm-role-title">Build your expedition</h2>
                 <small>Progress and first clears are tracked separately for every party size.</small>
               </header>
+              <OnlineGroupPanel />
 
               <div className="manastorm-setup-block">
                 <strong>Party size</strong>
@@ -245,8 +279,9 @@ export function ManastormSelectScreen() {
                       controlId={`manastorm-party-${size}`}
                       selectedId={controller.selectedId}
                       select={controller.select}
-                      className={`manastorm-size-option ${partySize === size ? "is-active" : ""}`}
+                      className={`manastorm-size-option ${effectivePartySize === size ? "is-active" : ""}`}
                       type="button"
+                      disabled={Boolean(onlineGroup && (size < groupHumanCount || (!fillWithAi && size !== groupHumanCount)))}
                       onClick={() => setPartySize(size)}
                     >
                       {size}
@@ -254,7 +289,11 @@ export function ManastormSelectScreen() {
                   ))}
                 </div>
                 <small>
-                  {partySize === 1 ? "Solo" : `You + ${partySize - 1} companion${partySize === 2 ? "" : "s"}`}
+                  {onlineGroup
+                    ? fillWithAi
+                      ? `${groupHumanCount} player${groupHumanCount === 1 ? "" : "s"} + ${Math.max(0, effectivePartySize - groupHumanCount)} AI teammate${effectivePartySize - groupHumanCount === 1 ? "" : "s"}`
+                      : `${groupHumanCount} grouped player${groupHumanCount === 1 ? "" : "s"} · AI fill off`
+                    : partySize === 1 ? "Solo" : `You + ${partySize - 1} companion${partySize === 2 ? "" : "s"}`}
                   {" · "}Highest clear {partyProgress.highestLevel}
                 </small>
               </div>
@@ -345,11 +384,11 @@ export function ManastormSelectScreen() {
                     disabled={!canEnter}
                     onFocus={() => preloadRole(role)}
                     onPointerEnter={() => preloadRole(role)}
-                    onClick={() => canEnter && enterManastorm(role, partySize, startingLevel)}
+                    onClick={() => { if (canEnter) void enterAsRole(role); }}
                   >
                     <b aria-hidden="true">{ROLE_DETAILS[role].sigil}</b>
                     <span>
-                      <strong>Enter as {PARTY_ROLE_LABELS[role]}</strong>
+                      <strong>{onlineGroup && session?.ownerId !== onlineGroup.leaderAccountId ? "Ready" : "Enter"} as {PARTY_ROLE_LABELS[role]}</strong>
                       <small>{ROLE_DETAILS[role].summary}</small>
                     </span>
                   </ControllerButton>

src/ui/OnlineGroupPanel.tsx

@@ -0,0 +1,157 @@
+import { useEffect, useState, type FormEvent } from "react";
+import { classById } from "../app/characterCatalog";
+import { selectedCharacter, useShellStore } from "../app/shellStore";
+import { useOnlineGroupStore } from "../app/onlineGroupStore";
+import {
+  classCanFillPartyRole,
+  partyRolesForClass,
+  PARTY_ROLE_LABELS,
+  type PartyRole,
+} from "../game/partyRoles";
+
+export function OnlineGroupPanel() {
+  const [username, setUsername] = useState("");
+  const [panelOpen, setPanelOpen] = useState(false);
+  const session = useShellStore((state) => state.session);
+  const character = useShellStore(selectedCharacter);
+  const snapshot = useOnlineGroupStore((state) => state.snapshot);
+  const busy = useOnlineGroupStore((state) => state.busy);
+  const error = useOnlineGroupStore((state) => state.error);
+  const fillWithAi = useOnlineGroupStore((state) => state.fillWithAi);
+  const invite = useOnlineGroupStore((state) => state.invite);
+  const respond = useOnlineGroupStore((state) => state.respond);
+  const leave = useOnlineGroupStore((state) => state.leave);
+  const remove = useOnlineGroupStore((state) => state.remove);
+  const updateMember = useOnlineGroupStore((state) => state.updateMember);
+  const clearActivity = useOnlineGroupStore((state) => state.clearActivity);
+  const setFillWithAi = useOnlineGroupStore((state) => state.setFillWithAi);
+
+  useEffect(() => {
+    if (snapshot.invitations.length > 0) setPanelOpen(true);
+  }, [snapshot.invitations.length]);
+
+  if (!session || session.kind !== "account" || !session.accessToken) return null;
+  const group = snapshot.group;
+  const currentMember = group?.members.find((member) => member.accountId === session.ownerId) ?? null;
+  const leader = group?.leaderAccountId === session.ownerId;
+  const roles = character ? partyRolesForClass(character.classId) : [];
+  const readyCount = group?.members.filter((member) => member.character && member.role).length ?? 0;
+
+  const submitInvite = async (event: FormEvent) => {
+    event.preventDefault();
+    if (!username.trim()) return;
+    if (await invite(session, username.trim())) setUsername("");
+  };
+  const chooseRole = (role: PartyRole) => {
+    if (character && classCanFillPartyRole(character.classId, role)) void updateMember(session, character, role);
+  };
+
+  return (
+    <details className="online-group-panel" open={panelOpen} onToggle={(event) => setPanelOpen(event.currentTarget.open)}>
+      <summary>
+        <span aria-hidden="true">◎</span>
+        <strong>Online group</strong>
+        <small>{group ? `${group.members.length} / 5 players · ${readyCount} ready` : "Optional co-op"}</small>
+      </summary>
+      <div className="online-group-panel__body">
+        {snapshot.invitations.length > 0 && (
+          <section className="online-group-invites" aria-label="Group invitations">
+            <strong>Invitations</strong>
+            {snapshot.invitations.map((invitation) => (
+              <div key={invitation.id}>
+                <span><b>{invitation.inviterUsername}</b><small>wants you in their group</small></span>
+                <button type="button" disabled={busy} onClick={() => void respond(session, invitation.id, true)}>Accept</button>
+                <button type="button" disabled={busy} onClick={() => void respond(session, invitation.id, false)}>Decline</button>
+              </div>
+            ))}
+          </section>
+        )}
+
+        {group && (
+          <section className="online-group-roster" aria-label="Online group roster">
+            <header><strong>Party roster</strong><small>{leader ? "You are the leader" : "Waiting for the leader"}</small></header>
+            {group.members.map((member) => {
+              const memberClass = member.character ? classById(member.character.classId as Parameters<typeof classById>[0]) : null;
+              return (
+                <div className="online-group-member" key={member.accountId}>
+                  <span className={member.character && member.role ? "is-ready" : ""} aria-hidden="true" />
+                  <p>
+                    <strong>{member.username}{group.leaderAccountId === member.accountId ? " ★" : ""}</strong>
+                    <small>{member.character
+                      ? `${member.character.name} · Level ${member.character.level} ${memberClass?.name ?? member.character.classId}`
+                      : "Choosing a character"}</small>
+                  </p>
+                  <b>{member.role ? PARTY_ROLE_LABELS[member.role] : "Not ready"}</b>
+                  {leader && member.accountId !== session.ownerId && (
+                    <button type="button" disabled={busy} onClick={() => void remove(session, member.accountId)}>Remove</button>
+                  )}
+                </div>
+              );
+            })}
+          </section>
+        )}
+
+        {group && character && currentMember && (
+          <section className="online-group-role" aria-label="Your group role">
+            <strong>Your role</strong>
+            <div>
+              {roles.map((role) => (
+                <button
+                  type="button"
+                  key={role}
+                  className={currentMember.role === role ? "is-active" : ""}
+                  disabled={busy || Boolean(group.activity)}
+                  aria-pressed={currentMember.role === role}
+                  onClick={() => chooseRole(role)}
+                >
+                  {PARTY_ROLE_LABELS[role]}
+                </button>
+              ))}
+            </div>
+          </section>
+        )}
+
+        {group?.activity && (
+          <div className="online-group-activity" role="status">
+            <span>
+              <strong>Launching {group.activity.type === "dungeon" ? "dungeon" : "Manastorm"}</strong>
+              <small>{group.activity.fillWithAi ? `Party filled to ${group.activity.partySize} with AI` : `${group.activity.partySize} players only`}</small>
+            </span>
+            {leader && <button type="button" disabled={busy} onClick={() => void clearActivity(session)}>Reset</button>}
+          </div>
+        )}
+
+        {leader && group && !group.activity && (
+          <label className="online-group-ai-toggle">
+            <input type="checkbox" checked={fillWithAi} onChange={(event) => setFillWithAi(event.target.checked)} />
+            <span><strong>Fill open slots with AI</strong><small>Turn off to enter with only grouped players.</small></span>
+          </label>
+        )}
+
+        {(!group || leader) && (
+          <form className="online-group-invite-form" onSubmit={submitInvite}>
+            <label htmlFor="online-group-username">Invite account name</label>
+            <div>
+              <input
+                id="online-group-username"
+                value={username}
+                maxLength={20}
+                autoComplete="off"
+                placeholder="PlayerName"
+                onChange={(event) => setUsername(event.target.value)}
+              />
+              <button type="submit" disabled={busy || !username.trim() || (group?.members.length ?? 0) >= 5}>Invite</button>
+            </div>
+          </form>
+        )}
+
+        {group && (
+          <button className="online-group-leave" type="button" disabled={busy} onClick={() => void leave(session)}>
+            {leader && group.members.length > 1 ? "Leave and transfer leadership" : "Leave group"}
+          </button>
+        )}
+        {error && <p className="online-group-error" role="alert">{error}</p>}
+      </div>
+    </details>
+  );
+}

src/ui/PartyFrames.tsx

@@ -11,6 +11,11 @@ import {
 import { TimedEffectStrip } from "./TimedEffectStrip";
 import { AuraStrip } from "./AuraStrip";
 import { PLAYER_AGGRO_ID } from "../game/aggro";
+import { useOnlineGroupStore } from "../app/onlineGroupStore";
+import type { OnlineGroupMember } from "../app/onlineGroupTypes";
+import { useOnlineSessionStore } from "../app/onlineSessionStore";
+import type { OnlineSessionPlayer } from "../app/onlineSessionTypes";
+import { onlinePlayerActorId } from "../game/onlineSessionRuntime";
 
 const PARTY_COMMANDS: readonly {
   command: PartyCommand;
@@ -107,6 +112,22 @@ function MemberFrame({ member, selected, onSelect }: {
   const characterClass = classById(member.classId);
   const race = raceById(member.raceId);
   const percent = healthPercent(member.health, member.maxHealth);
+  const absorb = useCombatStore((state) => state.auras.reduce((total, aura) => (
+    aura.targetId === member.id
+      ? total + aura.absorbs.reduce((sum, pool) => sum + pool.remaining, 0)
+      : total
+  ), 0));
+  const absorbPercent = Math.min(100 - percent, healthPercent(absorb, member.maxHealth));
+  const dispellableCount = useCombatStore((state) => state.auras.reduce((total, aura) => (
+    aura.targetId === member.id && aura.definition.disposition === "debuff" && aura.definition.dispelCategory
+      ? total + 1
+      : total
+  ), 0));
+  const dispellableNames = useCombatStore((state) => state.auras
+    .filter((aura) => aura.targetId === member.id && aura.definition.disposition === "debuff" && aura.definition.dispelCategory)
+    .map((aura) => aura.definition.name)
+    .join(", "));
+  const resourcePercent = healthPercent(member.resource, member.maxResource);
   return (
     <button
       type="button"
@@ -118,10 +139,15 @@ function MemberFrame({ member, selected, onSelect }: {
       <span className="party-frame__sigil" style={{ "--party-class-color": characterClass.color } as CSSProperties}>{characterClass.sigil}</span>
       <span className="party-frame__body">
         <span className="party-frame__identity"><strong>{member.name}</strong><small>{PARTY_ROLE_LABELS[member.role]} · {race.name} · {member.specialization}</small></span>
+        {dispellableCount ? <span className="party-frame__dispel" title={dispellableNames}>DISPEL {dispellableCount}</span> : null}
         <span className="party-frame__health" role="progressbar" aria-label={`${member.name} health`} aria-valuemin={0} aria-valuemax={member.maxHealth} aria-valuenow={Math.max(0, member.health)}>
           <i style={{ width: `${percent}%` }} />
+          {absorb > 0 ? <em style={{ left: `${percent}%`, width: `${absorbPercent}%` }} /> : null}
           <b>{Math.ceil(member.health)} / {member.maxHealth}</b>
         </span>
+        <span className={`party-frame__resource party-frame__resource--${member.resourceType}`} title={`${Math.floor(member.resource)} / ${member.maxResource} ${member.resourceName}`}>
+          <i style={{ width: `${resourcePercent}%` }} />
+        </span>
         <TimedEffectStrip targetId={member.id} className="timed-effect-strip--party" />
         <AuraStrip targetId={member.id} className="aura-strip--party" />
       </span>
@@ -129,19 +155,85 @@ function MemberFrame({ member, selected, onSelect }: {
   );
 }
 
+function OnlineMemberFrame({
+  member,
+  player,
+  selected,
+  onSelect,
+}: {
+  member: OnlineGroupMember;
+  player: OnlineSessionPlayer | null;
+  selected: boolean;
+  onSelect: () => void;
+}) {
+  const character = member.character;
+  if (!character) return null;
+  const characterClass = classById(character.classId as Parameters<typeof classById>[0]);
+  const percent = player ? healthPercent(player.health, player.maxHealth) : 0;
+  return (
+    <button
+      type="button"
+      className={`party-frame party-frame--online ${selected ? "is-selected" : ""} ${player && player.health <= 0 ? "is-down" : ""}`}
+      aria-label={`Target ${character.name}, online player`}
+      aria-pressed={selected}
+      disabled={!player}
+      onClick={onSelect}
+    >
+      <span className="party-frame__sigil" style={{ "--party-class-color": characterClass.color } as CSSProperties}>{characterClass.sigil}</span>
+      <span className="party-frame__body">
+        <span className="party-frame__identity"><strong>{character.name}</strong><small>{member.role ? PARTY_ROLE_LABELS[member.role] : "Player"} · {member.username}</small></span>
+        {player ? (
+          <>
+            <span className="party-frame__health" role="progressbar" aria-label={`${character.name} health`} aria-valuemin={0} aria-valuemax={player.maxHealth} aria-valuenow={Math.max(0, player.health)}>
+              <i style={{ width: `${percent}%` }} />
+              <b>{Math.ceil(player.health)} / {player.maxHealth}</b>
+            </span>
+            <span className="party-frame__resource" title={`${Math.floor(player.resource)} / ${player.maxResource} ${player.resourceName}`}>
+              <i style={{ width: `${healthPercent(player.resource, player.maxResource)}%` }} />
+            </span>
+            <span className="party-frame__online-status"><i /> Live</span>
+          </>
+        ) : <span className="party-frame__online-status">Connecting…</span>}
+      </span>
+    </button>
+  );
+}
+
 /** Compact roster for the player plus the selected number of targetable AI allies. */
 export function PartyFrames() {
   const character = useShellStore((state) => state.activeCharacter);
   const playerRole = useShellStore((state) => state.activeDungeonRole);
   const playerHealth = useCombatStore((state) => state.health);
   const playerMaxHealth = useCombatStore((state) => state.maxHealth);
+  const playerResource = useCombatStore((state) => state.resource);
+  const playerMaxResource = useCombatStore((state) => state.maxResource);
+  const playerResourceName = useCombatStore((state) => state.resourceName);
+  const playerAuraAbsorb = useCombatStore((state) => state.auras.reduce((total, aura) => (
+    aura.targetId === PLAYER_AGGRO_ID
+      ? total + aura.absorbs.reduce((sum, pool) => sum + pool.remaining, 0)
+      : total
+  ), 0));
+  const playerShield = useCombatStore((state) => state.shield);
   const members = usePartyStore((state) => state.members);
   const selectedMemberId = usePartyStore((state) => state.selectedMemberId);
   const selfSelected = usePartyStore((state) => state.selfSelected);
   const routeBlocked = usePartyStore((state) => state.routeBlocked);
+  const sessionOwnerId = useShellStore((state) => state.session?.ownerId ?? null);
+  const onlineGroup = useOnlineGroupStore((state) => state.snapshot.group);
+  const onlineActivity = useOnlineGroupStore((state) => state.activeActivity);
+  const onlineSession = useOnlineSessionStore((state) => state.snapshot);
+  const selectedOnlineActorId = useCombatStore((state) => state.selectedFriendlyActorId);
   const playerPercent = healthPercent(playerHealth, playerMaxHealth);
-  if (!members.length) return null;
-  const groupSize = members.length + 1;
+  const playerAbsorb = playerShield + playerAuraAbsorb;
+  const playerAbsorbPercent = Math.min(100 - playerPercent, healthPercent(playerAbsorb, playerMaxHealth));
+  const onlineMembers = onlineActivity && onlineGroup
+    ? onlineGroup.members.filter((member) => member.accountId !== sessionOwnerId && member.character)
+    : [];
+  const onlinePlayersByAccount = new Map(
+    (onlineSession?.players ?? []).map((player) => [player.accountId, player]),
+  );
+  if (!members.length && !onlineMembers.length) return null;
+  const groupSize = members.length + onlineMembers.length + 1;
 
   const selectMember = (id: string) => {
     useCombatStore.getState().clearTarget();
@@ -153,10 +245,16 @@ export function PartyFrames() {
     usePartyStore.getState().selectSelf();
   };
 
+  const selectOnlineMember = (accountId: string) => {
+    useCombatStore.getState().clearTarget();
+    usePartyStore.getState().clearSelection();
+    useCombatStore.getState().selectFriendlyActor(onlinePlayerActorId(accountId));
+  };
+
   return (
     <section className="party-frames" aria-label={`${groupSize} player party`}>
       <header><span>Party</span><b className={routeBlocked ? "is-warning" : ""}>{routeBlocked ? "Route blocked" : `${groupSize} / ${groupSize}`}</b></header>
-      <PartyCommandBar />
+      {members.length ? <PartyCommandBar /> : null}
       <button
         type="button"
         className={`party-frame party-frame--player ${selfSelected ? "is-selected" : ""} ${playerHealth <= 0 ? "is-down" : ""}`}
@@ -169,12 +267,28 @@ export function PartyFrames() {
           <span className="party-frame__identity"><strong>{character?.name ?? "Adventurer"}</strong><small>You · {PARTY_ROLE_LABELS[playerRole]}</small></span>
           <span className="party-frame__health" role="progressbar" aria-label="Player health" aria-valuemin={0} aria-valuemax={playerMaxHealth} aria-valuenow={Math.max(0, playerHealth)}>
             <i style={{ width: `${playerPercent}%` }} />
+            {playerAbsorb > 0 ? <em style={{ left: `${playerPercent}%`, width: `${playerAbsorbPercent}%` }} /> : null}
             <b>{Math.ceil(playerHealth)} / {playerMaxHealth}</b>
           </span>
+          <span className="party-frame__resource" title={`${Math.floor(playerResource)} / ${playerMaxResource} ${playerResourceName}`}>
+            <i style={{ width: `${healthPercent(playerResource, playerMaxResource)}%` }} />
+          </span>
           <TimedEffectStrip targetId={null} className="timed-effect-strip--party" />
           <AuraStrip targetId={PLAYER_AGGRO_ID} className="aura-strip--party" />
         </span>
       </button>
+      {onlineMembers.map((member) => {
+        const actorId = onlinePlayerActorId(member.accountId);
+        return (
+          <OnlineMemberFrame
+            key={member.accountId}
+            member={member}
+            player={onlinePlayersByAccount.get(member.accountId) ?? null}
+            selected={selectedOnlineActorId === actorId}
+            onSelect={() => selectOnlineMember(member.accountId)}
+          />
+        );
+      })}
       {members.map((member) => (
         <MemberFrame
           key={member.id}

src/ui/PlayerFrame.tsx

@@ -5,7 +5,7 @@ export interface PlayerFrameMeter {
   current: number;
   maximum: number;
   label: string;
-  tone: "health" | "mana" | "rage" | "energy" | "runic-power" | "focus" | "nature-power" | "psi";
+  tone: string;
 }
 
 export interface PlayerFrameProps {

src/ui/SummonFrames.tsx

@@ -0,0 +1,31 @@
+import { useCombatStore } from "../game/combatStore";
+
+export function SummonFrames({ now }: { readonly now: number }) {
+  const summons = useCombatStore((state) => state.summons);
+  const selectedFriendlyActorId = useCombatStore((state) => state.selectedFriendlyActorId);
+  const selectFriendlyActor = useCombatStore((state) => state.selectFriendlyActor);
+  if (!summons.length) return null;
+  return (
+    <section className="summon-frames" aria-label="Pets, totems, and summons">
+      {summons.map((summon) => {
+        const healthPercent = summon.maxHealth > 0 ? Math.max(0, Math.min(100, summon.health / summon.maxHealth * 100)) : 0;
+        const remaining = summon.expiresAt >= Number.MAX_SAFE_INTEGER
+          ? "∞"
+          : `${Math.max(0, Math.ceil((summon.expiresAt - now) / 1_000))}s`;
+        return (
+          <button
+            type="button"
+            className={`summon-frame summon-frame--${summon.kind}${selectedFriendlyActorId === summon.id ? " is-selected" : ""}`}
+            key={summon.id}
+            aria-pressed={selectedFriendlyActorId === summon.id}
+            onClick={() => selectFriendlyActor(selectedFriendlyActorId === summon.id ? null : summon.id)}
+          >
+            <header><strong>{summon.name}</strong><span>{summon.kind} · {remaining}</span></header>
+            <div><i style={{ width: `${healthPercent}%` }} /></div>
+            <small>{Math.ceil(summon.health)} / {summon.maxHealth}</small>
+          </button>
+        );
+      })}
+    </section>
+  );
+}