Update Healer Man server

PLAYTEST_NOTES.md

@@ -4,6 +4,33 @@ This file is the durable record of runtime behavior, regressions, and the
 evidence required before calling a visual bug fixed. Update it whenever scene,
 camera, input, physics, mob-rendering, or asset-loading code changes.
 
+## 2026-09-27 Bite-Sized spot editor
+
+- `scripts/playtest-bite-sized-editor.cjs` used the real app in headless Edge
+  with an isolated temporary API database and GM account. It created a named
+  Stockades spot, added an imported Forsaken Abbey Carrion Spider, duplicated
+  and removed an individual placement, captured anchors, and published through
+  the GM API. The scene showed textured imported mobs and selectable placement
+  rings; the collapsible scrolling panel kept its publish controls accessible.
+- WoW Stockades and RoM Forsaken Abbey editing loaded grounded players, normal
+  dungeon geometry and textures, mob previews, and five party-seat markers.
+  Evidence: `playtest-artifacts/bite-sized-editor/wow-editor.png`,
+  `cross-dungeon-preview.png`, and `rom-editor.png`.
+- In draft test runs, the after-mobs boss stayed inactive until the trash died;
+  the present-from-start boss was active immediately. Injected lethal combat
+  damage exercised encounter completion, and the editor displayed Test complete
+  with an untimed run. This verifies activation/completion, not encounter balance
+  or a manually played full clear. Evidence: `boss-after-mobs.png` and
+  `boss-present.png` in the same directory.
+- Focusing the spot-name field prevented W movement. After collapsing the panel,
+  right drag changed camera yaw, pointer lock stayed null, and releasing the
+  button stopped camera changes. No mouse-capture prompt or page error occurred.
+- Randomized runs entered both the Stockades and Forsaken Abbey parent maps with
+  ready assets and pinned creature assignments. Evidence:
+  `randomized-stormwind-stockade.png`, `randomized-forsaken-abbey.png`, and
+  `observations.json`. These are local isolated runs; no production layouts were
+  published by this check.
+
 ## 2026-09-27 Shadowfiend summon visibility
 
 - The dedicated `scripts/combat-effects/shadowfiend-preview.html` page cast the

docs/BITE_SIZED_EDITOR.md

@@ -0,0 +1,90 @@
+# Bite-Sized spot authoring
+
+Open **GM Menu → Bite-Sized Editor**, select a dungeon and spot, and use **Go to spot**.
+GM administration also provides the same entry. A selected character and an online
+GM account are required. Leave an online activity or Dungeon Race before editing.
+
+The scene uses the normal renderer, movement, and hold-right-drag camera. The right
+panel scrolls and collapses to leave the world visible. Focusing a panel control
+suspends movement and camera input. Click a world marker or collapse the panel to
+return to placement.
+
+- Select Party start, Random boss spawn, or an individual mob point. Walk to a
+  grounded position and press **Set here**, edit coordinates/facing, or use
+  **Go to point**. Cyan markers show all five party seats, yellow markers show
+  mobs, and the red marker shows the random boss anchor.
+- The searchable mob picker starts with the full parent dungeon. **Other dungeons**
+  includes imported mobs and their source names. Each point is independent;
+  repeated creature types are supported. Assets are prepared before previews.
+- New spots start empty with **After all mobs die**. A zero-mob layout activates
+  its boss immediately. **Present from start** activates it alongside the mobs.
+  Ordinary bosses always come from the parent dungeon and are rolled per run.
+- New spots use the parent's full geometry without the original artificial
+  branch closures. Duplicates retain the copied spot's legacy closures.
+- **Test run** exercises the draft with combat, completion, and no saved rewards,
+  progression, checkpoints, or rankings. **Return to editing** starts another
+  placement session. A test completion appears in the panel.
+- **Save & publish** validates the draft's references, IDs, transforms, grounded
+  anchors and reachable navigation. Keep at least one spot in every dungeon.
+  Imported layouts also validate their retained permanent branch closures.
+  A revision conflict or download/validation failure leaves the draft intact.
+  **Refresh published** preserves a dirty draft; **Discard** restores published
+  data. Drafts are held in this client session until published or discarded.
+
+## Runtime and persistence
+
+`shared/bite-sized-layouts.mjs` owns normalization, gameplay identity, and independent
+deterministic location, spot, mob and boss rolls. Ordinary runs choose a spot
+uniformly within their dungeon and retain its creature types. Randomized activities
+keep the two existing source pools, choose an eligible parent dungeon and spot,
+then deal rolled creatures into those placements without replacement until a pool
+is exhausted. Both activity IDs remain unchanged for saves and network protocols.
+
+`BiteSizedRunSelection` includes the complete immutable layout snapshot, its stable
+ID/gameplay revision, parent source, boss and resolved mob references. Checkpoints,
+online activities and race matches pin it. Publishing affects new runs; retries,
+offline cached resumes, party members and race opponents retain their snapshot.
+Legacy checkpoints keep the original layout, and legacy randomized runs preserve
+the original Stockades creature deal.
+
+`src/game/biteSizedLayoutRuntime.ts` materializes placements over the selected parent
+definition. `contentSourceDungeonId` controls environment, navigation and artwork
+resolution. `src/app/biteSizedLayoutContent.ts` verifies that parent's content and
+selected creature assets before entry and retains a bounded preparation cache.
+Published configuration is cached in local storage; checkpoint snapshots do not
+depend on the latest configuration being available online.
+
+`server/bite-sized-layouts.mjs` owns SQLite `bite_sized_layout_config` and immutable
+`bite_sized_spot_revisions`. Public reads use `/api/bite-sized-layouts`; authenticated
+GM reads/writes use `/api/gm/bite-sized-layouts`. PUT accepts `{ expectedRevision,
+config }`. `?spotId=<id>&revision=<number>` reads archived data, including removed
+spots; `?history=1` lists historical revisions. Gameplay edits create timing
+revisions, while renames retain the timing revision and immutable historical data.
+
+Dungeon and race clear-time rankings include spot ID/revision alongside existing
+boss/difficulty dimensions. Existing results migrate to the original default spot,
+revision zero. Results carry spot names; timing screens expose spot and revision
+filters. Overall race wins keep their aggregate dimensions.
+
+## Generated owners and verification
+
+Run `npm run bitesized:generate` after changing parent definitions, supported source
+creatures, or navigation assets. `scripts/generate-bite-sized-layouts.ts` emits
+`shared/bite-sized-defaults.json` and `shared/bite-sized-catalog.json` from the
+authoritative registry/templates. `scripts/generate-bite-sized-navigation.ts`
+emits a compressed API-side navigation surface/reachability index and bundles the
+same TypeScript floor validator into `server/generated/`. These artifacts must ship
+with the API server; the server does not need rendering downloads for validation.
+
+Focused coverage lives in `src/game/biteSizedLayouts.test.ts`,
+`src/game/biteSizedLayoutsStore.test.ts`, `src/app/biteSizedLayoutContent.test.ts`
+and `server/bite-sized-layouts.test.mjs`, alongside the existing dungeon, content,
+checkpoint, online, race and input tests. Run `npm run build` and
+`npm run release:check` before delivery.
+
+`node scripts/playtest-bite-sized-editor.cjs` runs Edge against an isolated temporary
+API database and the dev app at port 5173. Override `BITE_SIZED_EDITOR_URL` when
+using another dev port. It records WoW/RoM authoring, imported previews, both boss
+settings, completion and unranked safeguards, panel input gating, right-drag release
+without pointer lock, and randomized entry into distinct parent maps under
+`playtest-artifacts/bite-sized-editor/`.

package.json

@@ -5,6 +5,7 @@
   "type": "module",
   "scripts": {
     "dev": "vite --host 0.0.0.0",
+    "bitesized:generate": "vite-node scripts/generate-bite-sized-layouts.ts && vite-node scripts/generate-bite-sized-navigation.ts",
     "dev:shelved": "vite --host 0.0.0.0 --mode shelved",
     "start": "node server/server.mjs",
     "db:init": "node scripts/init-game-database.mjs",

scripts/generate-bite-sized-layouts.ts

@@ -0,0 +1,35 @@
+import { writeFileSync } from "node:fs";
+import { DUNGEON_DEFINITIONS, AVAILABLE_RANDOMIZED_CREATURE_CATALOG, BITE_SIZED_RANDOMIZED_CREATURE_CATALOG } from "../src/game/dungeonRegistry";
+import { dungeonContentSourceId, isBiteSizedDungeonId, isRandomizedBiteSizedDungeonId } from "../src/game/dungeonContentSource";
+import { sourceBossCandidates } from "../src/game/dungeons/sourceBossCandidates";
+import { BITE_SIZED_STOCKADES_BOSS_CANDIDATES } from "../src/game/dungeons/biteSizedStockades";
+
+const layouts = DUNGEON_DEFINITIONS.filter((d) => isBiteSizedDungeonId(d.id) && !isRandomizedBiteSizedDungeonId(d.id));
+const sources = DUNGEON_DEFINITIONS.filter((d) => !isBiteSizedDungeonId(d.id));
+const defaults = layouts.map((d) => {
+  const sourceDungeonId = dungeonContentSourceId(d.id);
+  const bossIds = new Set(d.bosses.map((b) => b.id));
+  const boss = [...d.staticSpawns, ...(d.encounterSpawnGroups ?? []).flatMap((g) => g.spawns)].find((s) => bossIds.has(s.id))!;
+  return { id: `${d.id}:default`, dungeonId: d.id, sourceDungeonId, name: d.title.split(": ").slice(1).join(": ") || d.title,
+    revision: 0, legacyLayout: true, partySpawn: { footPosition: d.entrance.footPosition, yaw: d.entrance.yaw },
+    mobs: d.staticSpawns.filter((s) => !bossIds.has(s.id)).map((s) => ({ ...s, sourceDungeonId })),
+    bossSpawn: { footPosition: boss.position, yaw: boss.yaw ?? 0 }, bossActivation: d.bosses[0].eventOnly ? "after-mobs" : "immediate" };
+});
+const metadata = layouts.map((d) => {
+  const source = sources.find((s) => s.id === dungeonContentSourceId(d.id))!;
+  const candidates = sourceBossCandidates(source);
+  return { id: d.id, sourceDungeonId: source.id, title: source.title, expansion: source.expansion,
+    bounds: source.bounds, difficultyIds: source.difficultyVariants.map((v) => v.id),
+    legacyBlockers: d.serverGameObjects.filter((object) => !object.interaction && object.states.find((state) => state.id === object.initialState)?.blocksMovement)
+      .map((object) => ({ position: object.position, yaw: object.yaw ?? 0, halfExtents: object.halfExtents })),
+    bossCandidates: (source.id === "stormwind-stockade" ? BITE_SIZED_STOCKADES_BOSS_CANDIDATES.map((b) => candidates.find((c) => c.objective.id === b.sourceSpawnId)!) : candidates)
+      .map((b) => ({ sourceDungeonId: source.id, entityId: b.spawn.entityId, objectiveId: b.objective.id, name: b.objective.name })) };
+});
+const creatures = sources.flatMap((d) => Object.values(d.entities).map((e) => ({ sourceDungeonId: d.id, entityId: e.id, kind: e.kind,
+  name: e.name, dungeonTitle: d.title, modelUrl: e.visual.model?.url ?? null })));
+const pool = (entries: typeof AVAILABLE_RANDOMIZED_CREATURE_CATALOG) => entries.map((e) => ({ sourceDungeonId: e.sourceDungeonId, entityId: e.entityId,
+  objectiveId: `randomized:${e.key}`, key: e.key, name: e.name, kind: e.kind }));
+writeFileSync(new URL("../shared/bite-sized-defaults.json", import.meta.url), `${JSON.stringify({ schemaVersion: 1, spots: defaults }, null, 2)}\n`);
+writeFileSync(new URL("../shared/bite-sized-catalog.json", import.meta.url), `${JSON.stringify({ dungeons: metadata, creatures,
+  pools: { "randomized-bite-sized-stormwind-stockade": pool(AVAILABLE_RANDOMIZED_CREATURE_CATALOG),
+    "randomized-bite-sized-stormwind-stockade-available": pool(BITE_SIZED_RANDOMIZED_CREATURE_CATALOG) } })}\n`);

scripts/generate-bite-sized-navigation.ts

@@ -0,0 +1,63 @@
+import { mkdirSync, writeFileSync } from "node:fs";
+import { gzipSync } from "node:zlib";
+import { build } from "esbuild";
+import { Group, Mesh } from "three";
+import { DUNGEON_REGISTRY } from "../src/game/dungeonRegistry";
+import { BITE_SIZED_LAYOUT_CATALOG } from "../shared/bite-sized-layouts.mjs";
+import { preparePartyNavigationGraph } from "../src/game/partyNavigationAssetCache";
+import { buildPartyNavigationTriangleNodes } from "../src/game/partyNavigation";
+import { biteSizedRouteSegmentClear } from "../src/game/biteSizedSpotNavigation";
+import { readDungeonGeometry } from "./dungeon-pipeline/wow-stair-geometry";
+
+// Ship the exact gameplay navigation validator and graphs with the API server.
+// The server does not need the downloadable rendering assets to validate a draft.
+mkdirSync("server/generated", { recursive: true });
+const graphs: Record<string, unknown> = {};
+for (const entry of BITE_SIZED_LAYOUT_CATALOG.dungeons) {
+  const source = DUNGEON_REGISTRY[entry.sourceDungeonId];
+  const asset = source.assets.navigation!;
+  const file = asset.url?.startsWith("/") ? `public${asset.url}` : `src/assets/game/dungeons/${source.id}/${asset.fileName}`;
+  const geometries = await readDungeonGeometry(file);
+  const scene = new Group();
+  geometries.forEach((g) => scene.add(new Mesh(g)));
+  const graph = preparePartyNavigationGraph(source.id, scene, source.navigationLinks, source.traversalRamps, 1_000_000, true);
+  const triangleNodes = graph.triangleNodes ?? buildPartyNavigationTriangleNodes(graph.triangles!, graph.nodes.map((n) => n.position));
+  const regions = new Int32Array(triangleNodes.length).fill(graph.triangleNodes ? -1 : 0);
+  let region = 0;
+  for (let i = 0; i < triangleNodes.length; i++) {
+    if (regions[i] !== -1) continue;
+    const stack = [i]; regions[i] = region;
+    while (stack.length) {
+      const current = stack.pop()!;
+      for (const edge of triangleNodes[current].neighbors) if (regions[edge.to] === -1) { regions[edge.to] = region; stack.push(edge.to); }
+    }
+    region++;
+  }
+  let legacyRegions: number[] | undefined;
+  if (entry.legacyBlockers.length) {
+    const filtered = new Int32Array(triangleNodes.length).fill(-1);
+    let component = 0;
+    for (let i = 0; i < triangleNodes.length; i++) {
+      if (filtered[i] !== -1) continue;
+      const stack = [i]; filtered[i] = component;
+      while (stack.length) {
+        const current = stack.pop()!;
+        for (const edge of triangleNodes[current].neighbors) {
+          if (filtered[edge.to] !== -1 || !biteSizedRouteSegmentClear(entry.legacyBlockers, triangleNodes[current].centroid, triangleNodes[edge.to].centroid)) continue;
+          filtered[edge.to] = component; stack.push(edge.to);
+        }
+      }
+      component++;
+    }
+    legacyRegions = Array.from(filtered);
+  }
+  // Publication needs a surface and reachability components, not A* costs and
+  // portals for every triangle. Keep four-decimal coordinate precision.
+  graphs[source.id] = { nodes: graph.nodes.map((n) => ({ id: n.id, position: n.position.map((v) => Math.round(v * 10_000) / 10_000), neighbors: [] })),
+    triangles: graph.triangles, regions: Array.from(regions), legacyRegions };
+  geometries.forEach((g) => g.dispose());
+  console.log(`Navigation: ${source.id}`);
+}
+writeFileSync("server/generated/bite-sized-navigation.json.gz", gzipSync(JSON.stringify(graphs), { level: 9 }));
+await build({ entryPoints: ["src/game/biteSizedSpotNavigation.ts"], bundle: true, platform: "node", format: "esm",
+  outfile: "server/generated/bite-sized-navigation.mjs", banner: { js: "// Generated by scripts/generate-bite-sized-navigation.ts; edit the shared TypeScript source." } });

scripts/playtest-bite-sized-editor.cjs

@@ -0,0 +1,188 @@
+const { chromium } = require('C:/Users/phenom/.cache/codex-runtimes/codex-primary-runtime/dependencies/node/node_modules/playwright');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const path = require('node:path');
+const os = require('node:os');
+
+const out = path.resolve('playtest-artifacts/bite-sized-editor');
+fs.mkdirSync(out, { recursive: true });
+const observations = [];
+async function state(page) {
+  return page.evaluate(async () => {
+    const { useGameStore } = await window.playtestImport('/src/game/store.ts');
+    const { useBiteSizedLayoutsStore } = await window.playtestImport('/src/game/biteSizedLayoutsStore.ts');
+    const { useDungeonRunStore } = await window.playtestImport('/src/game/dungeonRunStore.ts');
+    const game = useGameStore.getState(), layouts = useBiteSizedLayoutsStore.getState();
+    return { yaw: game.cameraYaw, position: game.playerPosition, grounded: game.playerGrounded, assetStatus: game.assetStatus,
+      mode: layouts.editorMode, point: layouts.editingPointId, focused: layouts.panelFocused, dirty: layouts.dirty,
+      run: useDungeonRunStore.getState().progress, pointerLock: document.pointerLockElement !== null };
+  });
+}
+async function ready(page) {
+  await page.locator('.game-shell').waitFor({ timeout: 120000 });
+  await page.locator('.loading-screen').waitFor({ state: 'hidden', timeout: 120000 });
+  await page.waitForFunction(async () => {
+    const { useGameStore } = await window.playtestImport('/src/game/store.ts');
+    return useGameStore.getState().assetStatus === 'ready';
+  }, null, { timeout: 120000 });
+  await page.waitForTimeout(1200);
+  console.log(`Ready: ${(await state(page)).mode || 'run'}`);
+}
+(async () => {
+  const { createGameServer } = await import('../server/server.mjs');
+  const dataDir = fs.mkdtempSync(path.join(os.tmpdir(), 'healer-man-editor-playtest-'));
+  const runtime = createGameServer({ dataDir, staticDir: dataDir, contentDir: dataDir });
+  await new Promise((resolve) => runtime.server.listen(0, '127.0.0.1', resolve));
+  const origin = `http://127.0.0.1:${runtime.server.address().port}`;
+  const auth = await (await fetch(`${origin}/api/auth/register`, { method: 'POST', headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ username: 'codex_dev_gm', password: 'local-playtest-password' }) })).json();
+  const browser = await chromium.launch({ channel: 'msedge', headless: true });
+  const page = await browser.newPage({ viewport: { width: 1440, height: 900 } });
+  await page.addInitScript(() => {
+    // Vite app imports may carry an HMR timestamp even in a fresh browser.
+    // Reuse that exact URL so inspection never creates a second Zustand store.
+    window.playtestImport = (modulePath) => {
+      const url = performance.getEntriesByType('resource').find((entry) => new URL(entry.name).pathname === modulePath)?.name;
+      return import(url || modulePath);
+    };
+  });
+  const errors = [];
+  page.on('pageerror', (error) => errors.push(error.message));
+  await page.route('**/api/**', async (route) => {
+    const request = route.request();
+    const response = await route.fetch({ url: `${origin}${new URL(request.url()).pathname}${new URL(request.url()).search}` });
+    await route.fulfill({ response });
+  });
+  try {
+    await page.goto(process.env.BITE_SIZED_EDITOR_URL || 'http://127.0.0.1:5173', { waitUntil: 'domcontentloaded', timeout: 120000 });
+    await page.getByLabel('Username', { exact: true }).fill('codex_dev_gm');
+    await page.getByLabel('Password', { exact: true }).fill('local-playtest-password');
+    await page.getByRole('button', { name: /Enter world/ }).click();
+    await page.getByRole('button', { name: /Create character/ }).click();
+    await page.getByRole('button', { name: /Customize & name/ }).click();
+    await page.getByLabel('Character name').fill('SpotTester');
+    await page.getByRole('button', { name: /Create character/ }).click();
+    await page.getByRole('button', { name: /Continue|Enter world/ }).first().click({ force: true });
+    await page.getByRole('button', { name: 'Continue', exact: true }).click({ force: true });
+    await page.locator('.main-menu-screen').waitFor();
+    await page.getByRole('button', { name: /GM Menu/ }).click();
+    await page.getByRole('button', { name: /Bite-Sized Editor/ }).click();
+    const panel = page.locator('.bite-sized-editor');
+    await panel.getByLabel('Dungeon', { exact: true }).selectOption('bite-sized-stormwind-stockade');
+    await panel.getByRole('button', { name: 'Go to spot', exact: true }).click();
+    await ready(page);
+    assert.equal((await state(page)).mode, 'edit');
+    assert.equal((await state(page)).grounded, true);
+    await page.screenshot({ path: path.join(out, 'wow-editor.png') });
+    await panel.getByRole('button', { name: 'New spot', exact: true }).click();
+    await ready(page);
+    await panel.getByLabel('Spot name', { exact: true }).fill('Playtest new spot');
+    await panel.getByLabel('Other dungeons', { exact: true }).check();
+    await panel.getByLabel('Search mobs', { exact: true }).fill('Forsaken');
+    await panel.getByRole('button', { name: 'Add mob here', exact: true }).click();
+    await panel.getByRole('button', { name: 'Duplicate mob point', exact: true }).waitFor();
+    await panel.getByRole('button', { name: 'Duplicate mob point', exact: true }).click();
+    await panel.getByRole('button', { name: 'Remove mob point', exact: true }).click();
+    await panel.getByRole('button', { name: 'Random boss spawn', exact: true }).click();
+    await panel.getByRole('button', { name: 'Set here', exact: true }).click();
+    await page.screenshot({ path: path.join(out, 'cross-dungeon-preview.png') });
+    await panel.getByRole('button', { name: 'Save & publish', exact: true }).click();
+    await page.waitForFunction(async () => {
+      const { useBiteSizedLayoutsStore } = await window.playtestImport('/src/game/biteSizedLayoutsStore.ts');
+      return !useBiteSizedLayoutsStore.getState().saving && !useBiteSizedLayoutsStore.getState().dirty;
+    }, null, { timeout: 120000 });
+    observations.push({ name: 'publish new spot with imported mob', state: await state(page) });
+    await panel.getByRole('button', { name: 'Test run', exact: true }).click();
+    await ready(page);
+    assert.equal((await state(page)).run.timed, false);
+    assert.equal((await state(page)).mode, 'test');
+    assert.equal(await page.evaluate(async () => {
+      const { useCombatStore } = await window.playtestImport('/src/game/combatStore.ts');
+      return Object.values(useCombatStore.getState().mobs).some((m) => m.boss && !m.dead);
+    }), false, 'The after-mobs boss must be absent before the trash dies');
+    await page.evaluate(async () => {
+      const { useCombatStore } = await window.playtestImport('/src/game/combatStore.ts');
+      const combat = useCombatStore.getState();
+      Object.values(combat.mobs).filter((m) => !m.boss).forEach((m) => combat.damageMob(m.id, 1e9));
+    });
+    await page.waitForTimeout(1200);
+    await page.screenshot({ path: path.join(out, 'boss-after-mobs.png') });
+    assert.equal(await page.evaluate(async () => {
+      const { useCombatStore } = await window.playtestImport('/src/game/combatStore.ts');
+      return Object.values(useCombatStore.getState().mobs).some((m) => m.boss && !m.dead);
+    }), true, 'The boss must activate after mobs die');
+    await panel.getByRole('button', { name: 'Return to editing', exact: true }).click();
+    await ready(page);
+    await panel.getByLabel('Boss arrival', { exact: true }).selectOption('immediate');
+    await panel.getByRole('button', { name: 'Test run', exact: true }).click();
+    await ready(page);
+    await page.screenshot({ path: path.join(out, 'boss-present.png') });
+    assert.equal(await page.evaluate(async () => {
+      const { useCombatStore } = await window.playtestImport('/src/game/combatStore.ts');
+      return Object.values(useCombatStore.getState().mobs).some((m) => m.boss && !m.dead);
+    }), true, 'The immediate boss must be present');
+    await page.evaluate(async () => {
+      const { useCombatStore } = await window.playtestImport('/src/game/combatStore.ts');
+      const combat = useCombatStore.getState(); Object.values(combat.mobs).forEach((m) => combat.damageMob(m.id, 1e9));
+    });
+    await panel.getByText(/Test complete/).waitFor({ timeout: 15000 });
+    observations.push({ name: 'both boss modes unranked test', state: await state(page) });
+    await panel.getByRole('button', { name: 'Return to editing', exact: true }).click();
+    await ready(page);
+    await panel.getByLabel('Spot name', { exact: true }).focus();
+    const before = await state(page);
+    await page.keyboard.down('w'); await page.waitForTimeout(350); await page.keyboard.up('w');
+    assert.ok(Math.hypot(...(await state(page)).position.map((v, i) => v - before.position[i])) < .1, 'Panel focus must gate movement');
+    await panel.getByRole('button', { name: 'Collapse editor' }).click();
+    await page.mouse.move(550, 380); await page.mouse.down({ button: 'right' });
+    const yaw = (await state(page)).yaw;
+    await page.mouse.move(650, 395, { steps: 8 });
+    await page.waitForTimeout(300);
+    assert.notEqual((await state(page)).yaw, yaw);
+    assert.equal((await state(page)).pointerLock, false);
+    await page.mouse.up({ button: 'right' }); await page.waitForTimeout(100);
+    const released = (await state(page)).yaw;
+    await page.mouse.move(700, 420, { steps: 4 }); await page.waitForTimeout(300);
+    assert.equal((await state(page)).yaw, released);
+    observations.push({ name: 'panel input gating and right drag, no pointer lock', state: await state(page) });
+    await panel.getByRole('button', { name: 'Spot browser', exact: true }).click();
+    await panel.getByLabel('Dungeon', { exact: true }).selectOption('bite-sized-forsaken-abbey-ancalon');
+    await panel.getByRole('button', { name: 'Go to spot', exact: true }).click();
+    await ready(page);
+    await page.screenshot({ path: path.join(out, 'rom-editor.png') });
+    observations.push({ name: 'RoM editing', state: await state(page) });
+    await panel.getByRole('button', { name: 'Spot browser', exact: true }).click();
+    await panel.getByRole('button', { name: 'Main menu', exact: true }).click();
+    for (const source of ['stormwind-stockade', 'forsaken-abbey']) {
+      await page.evaluate(async (source) => {
+        const { selectBiteSizedRun } = await window.playtestImport('/shared/bite-sized-layouts.mjs');
+        const { useBiteSizedLayoutsStore } = await window.playtestImport('/src/game/biteSizedLayoutsStore.ts');
+        const { prepareBiteSizedLayoutContent } = await window.playtestImport('/src/app/biteSizedLayoutContent.ts');
+        const { useShellStore } = await window.playtestImport('/src/app/shellStore.ts');
+        const { installDungeonShellRuntime } = await window.playtestImport('/src/app/dungeonShellRuntime.ts');
+        const id = 'randomized-bite-sized-stormwind-stockade-available', seed = `playtest-${source}`;
+        const parent = useBiteSizedLayoutsStore.getState().config.spots.find((s) => s.sourceDungeonId === source).dungeonId;
+        const selection = selectBiteSizedRun(useBiteSizedLayoutsStore.getState().config, id, seed, { eligibleDungeonIds: [parent] });
+        await prepareBiteSizedLayoutContent(id, seed, selection); installDungeonShellRuntime();
+        useShellStore.getState().enterDungeon(id, 'healer', { freshRun: true, runId: seed, biteSizedSelection: selection });
+      }, source);
+      await ready(page);
+      await page.locator('.dungeon-boss-intro').waitFor({ state: 'hidden', timeout: 30000 });
+      await page.waitForTimeout(300);
+      await page.screenshot({ path: path.join(out, `randomized-${source}.png`) });
+      observations.push({ name: `randomized ${source}`, state: await state(page) });
+      await page.evaluate(async () => { const { useShellStore } = await window.playtestImport('/src/app/shellStore.ts'); useShellStore.getState().returnToMainMenu(); });
+      await page.locator('.main-menu-screen').waitFor();
+    }
+    assert.deepEqual(errors, []);
+    fs.writeFileSync(path.join(out, 'observations.json'), `${JSON.stringify({ observations, errors }, null, 2)}\n`);
+    console.log(`Passed ${observations.length} live checks. Screenshots: ${out}`);
+  } catch (error) {
+    await page.screenshot({ path: path.join(out, 'failure.png') });
+    console.error((await page.locator('body').innerText()).slice(-2400));
+    console.error(errors.slice(-8)); throw error;
+  } finally {
+    await browser.close(); await new Promise((resolve) => runtime.server.close(resolve));
+    fs.rmSync(dataDir, { recursive: true, force: true });
+  }
+})().catch((error) => { console.error(error); process.exitCode = 1; });

server/bite-sized-layouts.mjs

@@ -0,0 +1,77 @@
+import { BITE_SIZED_DEFAULT_CONFIG, BITE_SIZED_LAYOUT_CATALOG, normalizeBiteSizedConfig, normalizeBiteSizedSelection, biteSizedGameplayKey, selectBiteSizedRun } from "../shared/bite-sized-layouts.mjs";
+import { readFileSync } from "node:fs";
+import { gunzipSync } from "node:zlib";
+import { validateBiteSizedSpotNavigation } from "./generated/bite-sized-navigation.mjs";
+
+const navigationGraphs = JSON.parse(gunzipSync(readFileSync(new URL("./generated/bite-sized-navigation.json.gz", import.meta.url))).toString("utf8"));
+
+export function createBiteSizedLayoutRepository(database, { ErrorType, isGameMaster }) {
+  database.exec(`CREATE TABLE IF NOT EXISTS bite_sized_layout_config (
+    id INTEGER PRIMARY KEY CHECK(id = 1), revision INTEGER NOT NULL, updated_at INTEGER, config_json TEXT NOT NULL
+  ) STRICT;
+  CREATE TABLE IF NOT EXISTS bite_sized_spot_revisions (
+    spot_id TEXT NOT NULL, revision INTEGER NOT NULL, spot_json TEXT NOT NULL, PRIMARY KEY(spot_id, revision)
+  ) STRICT;`);
+  database.prepare("INSERT OR IGNORE INTO bite_sized_layout_config VALUES (1, 0, NULL, ?)").run(JSON.stringify(normalizeBiteSizedConfig(BITE_SIZED_DEFAULT_CONFIG)));
+  const archive = database.prepare("INSERT OR IGNORE INTO bite_sized_spot_revisions VALUES (?, ?, ?)");
+  for (const spot of normalizeBiteSizedConfig(BITE_SIZED_DEFAULT_CONFIG).spots) archive.run(spot.id, spot.revision, JSON.stringify(spot));
+  function getBiteSizedLayouts() {
+    const row = database.prepare("SELECT * FROM bite_sized_layout_config WHERE id = 1").get();
+    return { revision: row.revision, updatedAt: row.updated_at, config: normalizeBiteSizedConfig(JSON.parse(row.config_json)) };
+  }
+  function getBiteSizedSpotRevision(id, revision) {
+    const row = database.prepare("SELECT spot_json FROM bite_sized_spot_revisions WHERE spot_id = ? AND revision = ?").get(id, revision);
+    if (!row) throw new ErrorType("That spot revision is unavailable.", 404, "spot_not_found");
+    return JSON.parse(row.spot_json);
+  }
+  function listBiteSizedSpotRevisions() {
+    return database.prepare("SELECT spot_json FROM bite_sized_spot_revisions ORDER BY spot_id, revision DESC").all().map((row) => JSON.parse(row.spot_json));
+  }
+  function putBiteSizedLayouts(account, expectedRevision, input) {
+    if (!isGameMaster(account)) throw new ErrorType("Game Master access is required.", 403, "gm_required");
+    let config;
+    try { config = normalizeBiteSizedConfig(input); }
+    catch (error) { throw new ErrorType(error.message, 400, "invalid_bite_sized_layout"); }
+    database.exec("BEGIN IMMEDIATE");
+    try {
+      const current = getBiteSizedLayouts();
+      if (!Number.isSafeInteger(expectedRevision) || expectedRevision !== current.revision) throw new ErrorType("Layouts changed on the server. Refresh before publishing; your draft is still available.", 409, "revision_conflict");
+      for (const spot of config.spots) {
+        const previous = current.config.spots.find((s) => s.id === spot.id);
+        if (previous && biteSizedGameplayKey(previous) === biteSizedGameplayKey(spot)) continue;
+        try {
+          const graph = navigationGraphs[spot.sourceDungeonId];
+          const blockers = spot.legacyLayout ? BITE_SIZED_LAYOUT_CATALOG.dungeons.find((d) => d.id === spot.dungeonId).legacyBlockers : [];
+          validateBiteSizedSpotNavigation(spot, graph, spot.legacyLayout ? graph.legacyRegions ?? graph.regions : graph.regions, blockers);
+        }
+        catch (error) { throw new ErrorType(error.message, 400, "invalid_bite_sized_navigation"); }
+      }
+      const spots = config.spots.map((spot) => {
+        const previous = current.config.spots.find((s) => s.id === spot.id);
+        const latest = database.prepare("SELECT MAX(revision) AS revision FROM bite_sized_spot_revisions WHERE spot_id = ?").get(spot.id).revision;
+        const revision = previous && biteSizedGameplayKey(previous) === biteSizedGameplayKey(spot) ? previous.revision : (latest ?? -1) + 1;
+        const next = { ...spot, revision };
+        archive.run(next.id, revision, JSON.stringify(next));
+        return next;
+      });
+      const next = { schemaVersion: 1, spots };
+      database.prepare("UPDATE bite_sized_layout_config SET revision = revision + 1, updated_at = ?, config_json = ? WHERE id = 1").run(Date.now(), JSON.stringify(next));
+      database.exec("COMMIT");
+      return getBiteSizedLayouts();
+    } catch (error) { database.exec("ROLLBACK"); throw error; }
+  }
+  function resolveBiteSizedRun(dungeonId, seed, eligibleDungeonIds) {
+    return selectBiteSizedRun(getBiteSizedLayouts().config, dungeonId, seed, { eligibleDungeonIds });
+  }
+  function validateBiteSizedRunSelection(input, dungeonId) {
+    let selection;
+    try { selection = normalizeBiteSizedSelection(input); }
+    catch (error) { throw new ErrorType(error.message, 400, "invalid_bite_sized_selection"); }
+    const archived = getBiteSizedSpotRevision(selection.spot.id, selection.spot.revision);
+    if (selection.dungeonId !== dungeonId || biteSizedGameplayKey(archived) !== biteSizedGameplayKey(selection.spot)) {
+      throw new ErrorType("The run does not match its published spot revision.", 400, "invalid_bite_sized_selection");
+    }
+    return selection;
+  }
+  return { getBiteSizedLayouts, getBiteSizedSpotRevision, listBiteSizedSpotRevisions, putBiteSizedLayouts, resolveBiteSizedRun, validateBiteSizedRunSelection };
+}

server/bite-sized-layouts.test.mjs

@@ -0,0 +1,142 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { DatabaseSync } from "node:sqlite";
+import { createBiteSizedLayoutRepository } from "./bite-sized-layouts.mjs";
+import { BITE_SIZED_DEFAULT_CONFIG, selectBiteSizedRun } from "../shared/bite-sized-layouts.mjs";
+import { mkdtempSync, rmSync } from "node:fs";
+import path from "node:path";
+import os from "node:os";
+import { createGameServer } from "./server.mjs";
+import { readFileSync } from "node:fs";
+import { gunzipSync } from "node:zlib";
+
+class ApiError extends Error { constructor(message, status) { super(message); this.status = status; } }
+function fixture(t) {
+  const db = new DatabaseSync(":memory:"); t.after(() => db.close());
+  return createBiteSizedLayoutRepository(db, { ErrorType: ApiError, isGameMaster: (a) => a?.gm === true });
+}
+const gm = { gm: true };
+test("publishes, duplicates, removes, archives gameplay changes and preserves rename timing", (t) => {
+  const repository = fixture(t);
+  const original = repository.getBiteSizedLayouts();
+  const spot = original.config.spots.find((s) => s.sourceDungeonId === "stormwind-stockade");
+  const renamed = structuredClone(original.config);
+  renamed.spots.find((s) => s.id === spot.id).name = "A new name";
+  const first = repository.putBiteSizedLayouts(gm, 0, renamed);
+  assert.equal(first.config.spots.find((s) => s.id === spot.id).revision, 0);
+  const edited = structuredClone(first.config);
+  edited.spots.find((s) => s.id === spot.id).bossActivation = "after-mobs";
+  edited.spots.push({ ...spot, id: "second-spot" });
+  const second = repository.putBiteSizedLayouts(gm, 1, edited);
+  assert.equal(second.config.spots.find((s) => s.id === spot.id).revision, 1);
+  const pinned = selectBiteSizedRun(original.config, spot.dungeonId, "active-run");
+  assert.deepEqual(repository.validateBiteSizedRunSelection(pinned, spot.dungeonId), pinned);
+  repository.putBiteSizedLayouts(gm, 2, { ...second.config, spots: second.config.spots.filter((s) => s.id !== spot.id) });
+  assert.equal(repository.getBiteSizedSpotRevision(spot.id, 0).name, spot.name);
+  assert.equal(repository.getBiteSizedSpotRevision(spot.id, 1).name, "A new name");
+  assert.throws(() => repository.putBiteSizedLayouts(gm, 1, edited), { status: 409 });
+  assert.equal(repository.getBiteSizedLayouts().revision, 3);
+});
+test("rejects unauthorized publication, missing spots, malformed references, and off-floor transforms", (t) => {
+  const repository = fixture(t);
+  assert.throws(() => repository.putBiteSizedLayouts(null, 0, BITE_SIZED_DEFAULT_CONFIG), { status: 403 });
+  assert.throws(() => repository.putBiteSizedLayouts(gm, 0, { schemaVersion: 1, spots: [] }), { status: 400 });
+  const edited = structuredClone(BITE_SIZED_DEFAULT_CONFIG);
+  const spot = edited.spots.find((s) => s.sourceDungeonId === "stormwind-stockade");
+  spot.partySpawn.footPosition[1] += 10;
+  assert.throws(() => repository.putBiteSizedLayouts(gm, 0, edited), /walkable floor/);
+  spot.partySpawn.footPosition[1] -= 10;
+  spot.mobs[0].entityId = "missing-creature";
+  assert.throws(() => repository.putBiteSizedLayouts(gm, 0, edited), /known non-boss/);
+  assert.equal(repository.getBiteSizedLayouts().revision, 0);
+  assert.throws(() => repository.getBiteSizedSpotRevision("missing", 0), { status: 404 });
+});
+
+test("imported layouts retain branch closures while new spots can use the full parent floor", (t) => {
+  const repository = fixture(t);
+  const edited = structuredClone(BITE_SIZED_DEFAULT_CONFIG);
+  const spot = edited.spots.find((s) => s.sourceDungeonId === "stormwind-stockade");
+  const graph = JSON.parse(gunzipSync(readFileSync(new URL("./generated/bite-sized-navigation.json.gz", import.meta.url))).toString("utf8"))[spot.sourceDungeonId];
+  const triangle = graph.triangles.find((indices) => {
+    const points = indices.map((i) => graph.nodes[i].position);
+    return points.every((p) => Math.abs(p[0] + 129.17) < 4 && p[2] > 27 && p[2] < 48);
+  });
+  assert.ok(triangle, "a floor triangle exists beyond the original sealed branch");
+  const position = [0, 1, 2].map((axis) => triangle.reduce((total, i) => total + graph.nodes[i].position[axis], 0) / 3);
+  spot.mobs = [{ ...spot.mobs[0], position }];
+  assert.throws(() => repository.putBiteSizedLayouts(gm, 0, edited), /cannot be reached/);
+  const newSpot = { ...spot, id: "open-parent-branch", legacyLayout: false };
+  const published = repository.putBiteSizedLayouts(gm, 0, { ...BITE_SIZED_DEFAULT_CONFIG, spots: [...BITE_SIZED_DEFAULT_CONFIG.spots, newSpot] });
+  assert.deepEqual(published.config.spots.find((s) => s.id === newSpot.id).mobs[0].position, position);
+});
+
+test("public reads, GM-only writes, conflict recovery, and archived HTTP revision reads", async () => {
+  const dataDir = mkdtempSync(path.join(os.tmpdir(), "healer-man-layout-api-"));
+  const runtime = createGameServer({ dataDir, staticDir: dataDir, contentDir: dataDir });
+  await new Promise((resolve) => runtime.server.listen(0, "127.0.0.1", resolve));
+  const origin = `http://127.0.0.1:${runtime.server.address().port}`;
+  try {
+    const read = async (query = "") => (await (await fetch(`${origin}/api/bite-sized-layouts${query}`)).json());
+    const initial = await read();
+    const register = async (username) => (await (await fetch(`${origin}/api/auth/register`, {
+      method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({ username, password: "test-password" }),
+    })).json()).token;
+    const playerToken = await register("layout_reader"), gmToken = await register("codex_dev_gm");
+    const draft = structuredClone(initial.config);
+    const spot = draft.spots.find((s) => s.sourceDungeonId === "stormwind-stockade");
+    spot.bossActivation = "after-mobs";
+    const put = (token, revision) => fetch(`${origin}/api/gm/bite-sized-layouts`, {
+      method: "PUT", headers: { "Content-Type": "application/json", Authorization: `Bearer ${token}` },
+      body: JSON.stringify({ expectedRevision: revision, config: draft }),
+    });
+    assert.equal((await fetch(`${origin}/api/gm/bite-sized-layouts`)).status, 401);
+    assert.equal((await put(playerToken, 0)).status, 403);
+    assert.equal((await put(gmToken, 0)).status, 200);
+    assert.equal((await put(gmToken, 0)).status, 409);
+    assert.equal((await read()).revision, 1);
+    assert.equal((await read(`?spotId=${encodeURIComponent(spot.id)}&revision=0`)).bossActivation, "immediate");
+    assert.equal((await read(`?spotId=${encodeURIComponent(spot.id)}&revision=1`)).bossActivation, "after-mobs");
+  } finally { await new Promise((resolve) => runtime.server.close(resolve)); rmSync(dataDir, { recursive: true, force: true }); }
+});
+
+test("timing rankings isolate spot and gameplay revision and keep active race snapshots", async () => {
+  const dataDir = mkdtempSync(path.join(os.tmpdir(), "healer-man-layout-rank-"));
+  const runtime = createGameServer({ dataDir, staticDir: dataDir, contentDir: dataDir });
+  await new Promise((resolve) => runtime.server.listen(0, "127.0.0.1", resolve));
+  const database = runtime.database;
+  try {
+    const account = (await database.register("codex_dev_gm", "test-password")).account;
+    const initial = database.getBiteSizedLayouts();
+    const spot = initial.config.spots.find((s) => s.sourceDungeonId === "stormwind-stockade");
+    const selection = database.resolveBiteSizedRun(spot.dungeonId, "same-boss");
+    const run = (id, pinned, duration) => ({ id, dungeonId: pinned.dungeonId, difficultyId: "normal", bossDifficulty: 1,
+      durationMs: duration, finishedAt: Date.now(), killedBossIds: [pinned.boss.objectiveId], biteSizedSelection: pinned,
+      party: [{ name: "Tester", classId: "priest", role: "healer", level: 20, npc: false }] });
+    const record = run("old-timing-run", selection, 1000);
+    assert.deepEqual(database.submitDungeonRun(account, record), database.submitDungeonRun(account, record));
+    const match = database.createDungeonRaceMatch({ id: "pinned-race", seed: "same-boss", dungeonId: spot.dungeonId,
+      difficultyId: "normal", createdAt: Date.now(), participants: [] });
+    const member = (await database.register("layout_party_member", "test-password")).account;
+    database.inviteOnlineGroupMember(account, member.username);
+    const invite = database.onlineGroupState(member.id).invitations[0];
+    database.respondToOnlineGroupInvite(member.id, invite.id, true);
+    database.updateOnlineGroupMember(account.id, { id: "leader-character", name: "Leader", classId: "warrior", specializationId: "warrior:protection", level: 20 }, "tank");
+    database.updateOnlineGroupMember(member.id, { id: "member-character", name: "Member", classId: "priest", specializationId: "priest:discipline", level: 20 }, "healer");
+    const activity = database.startOnlineGroupActivity(account.id, { type: "dungeon", contentId: spot.dungeonId, fillWithAi: true, partySize: 5 }).group.activity;
+    assert.deepEqual(database.onlineGroupState(member.id).group.activity.biteSizedSelection, activity.biteSizedSelection);
+    const draft = structuredClone(initial.config);
+    draft.spots.find((s) => s.id === spot.id).bossActivation = "after-mobs";
+    database.putBiteSizedLayouts(account, 0, draft);
+    const changed = database.resolveBiteSizedRun(spot.dungeonId, "same-boss");
+    database.submitDungeonRun(account, run("new-timing-run", changed, 900));
+    const board = (revision) => database.listDungeonLeaderboard({ dungeonId: spot.dungeonId, difficultyId: "normal", bossDifficulty: 1,
+      bossId: selection.boss.objectiveId, spotId: spot.id, spotRevision: revision });
+    assert.equal(board(0).total, 1); assert.equal(board(1).total, 1);
+    assert.equal(board(0).entries[0].id, "old-timing-run");
+    assert.deepEqual(database.getDungeonRaceMatch(match.id).biteSizedSelection, selection);
+    assert.deepEqual(database.onlineGroupState(account.id).group.activity.biteSizedSelection, activity.biteSizedSelection);
+    assert.deepEqual(database.onlineGroupState(member.id).group.activity.biteSizedSelection, activity.biteSizedSelection);
+    database.submitDungeonRun(account, run("old-after-publication", selection, 1100));
+    assert.equal(board(0).total, 2);
+  } finally { await new Promise((resolve) => runtime.server.close(resolve)); rmSync(dataDir, { recursive: true, force: true }); }
+});

server/database.mjs

@@ -22,6 +22,8 @@ import { arenaRatingBand, calculateArenaRating, clampArenaRating } from "./arena
 import { arenaRoleForSpecialization } from "./arena-specializations.mjs";
 import { createDungeonReportRepository } from "./dungeon-reports.mjs";
 import { createDungeonLeaderboardRepository } from "./dungeon-leaderboards.mjs";
+import { createBiteSizedLayoutRepository } from "./bite-sized-layouts.mjs";
+import { BITE_SIZED_LAYOUT_CATALOG, isLayoutBiteSizedDungeon } from "../shared/bite-sized-layouts.mjs";
 import { createDungeonRaceRepository } from "./dungeon-races.mjs";
 import { createDungeonSimulationRepository } from "./dungeon-simulation.mjs";
 import dungeonLeaderboardCatalog from "../src/game/generated/dungeonLeaderboardCatalog.generated.json" with { type: "json" };
@@ -414,6 +416,8 @@ export function openGameDatabase(options = {}) {
     return accountRoles(account?.username).includes("gm");
   }
 
+  const biteSizedLayouts = createBiteSizedLayoutRepository(database, { ErrorType: GameDatabaseError, isGameMaster });
+
   function getManastormConfig() {
     const row = statements.manastormConfig.get();
     try {
@@ -904,6 +908,8 @@ export function openGameDatabase(options = {}) {
         : null,
       startedAt: Date.now(),
     };
+    if (type === "dungeon" && isLayoutBiteSizedDungeon(contentId)) activity.biteSizedSelection = biteSizedLayouts.resolveBiteSizedRun(contentId, activity.id,
+      BITE_SIZED_LAYOUT_CATALOG.dungeons.filter((d) => !getDungeonQueuePolicy().config.disabled.biteSized.includes(d.id)).map((d) => d.id));
     database.prepare(`
       UPDATE online_groups
       SET activity_json = ?, activity_revision = activity_revision + 1, updated_at = ?
@@ -1180,9 +1186,10 @@ export function openGameDatabase(options = {}) {
   return {
     databasePath,
     ...createDungeonReportRepository(database, { isGameMaster, ErrorType: GameDatabaseError }),
-    ...createDungeonLeaderboardRepository(database, { ErrorType: GameDatabaseError }),
+    ...biteSizedLayouts,
+    ...createDungeonLeaderboardRepository(database, { ErrorType: GameDatabaseError, biteSizedLayouts }),
     ...(() => {
-      const races = createDungeonRaceRepository(database, { ErrorType: GameDatabaseError, isGameMaster });
+      const races = createDungeonRaceRepository(database, { ErrorType: GameDatabaseError, isGameMaster, biteSizedLayouts });
       return {
         getDungeonRaceMatch: races.getMatch,
         createDungeonRaceMatch: races.createMatch,

server/dungeon-leaderboards.mjs

@@ -1,4 +1,5 @@
 import catalog from "../src/game/generated/dungeonLeaderboardCatalog.generated.json" with { type: "json" };
+import { defaultBiteSizedBoardScope, normalizeBiteSizedSelection } from "../shared/bite-sized-layouts.mjs";
 
 const dungeons = new Map(catalog.dungeons.map((entry) => [entry.id, entry]));
 const classes = new Set(catalog.classes.map((entry) => entry.id));
@@ -15,7 +16,7 @@ function storedFinalBossId(dungeonId, difficultyId, killedBossIds) {
   return defeated.length === 1 ? defeated[0] : null;
 }
 
-export function createDungeonLeaderboardRepository(database, { ErrorType }) {
+export function createDungeonLeaderboardRepository(database, { ErrorType, biteSizedLayouts }) {
   database.exec(`
     CREATE TABLE IF NOT EXISTS dungeon_runs (
       id TEXT PRIMARY KEY,
@@ -51,11 +52,20 @@ export function createDungeonLeaderboardRepository(database, { ErrorType }) {
   database.exec(`CREATE INDEX IF NOT EXISTS dungeon_runs_final_boss_idx
     ON dungeon_runs(dungeon_id, difficulty_id, boss_difficulty, final_boss_id, full_clear, duration_ms, finished_at, id)`);
   const byId = database.prepare("SELECT * FROM dungeon_runs WHERE id = ?");
+  for (const [name, type] of [["spot_id", "TEXT"], ["spot_revision", "INTEGER"], ["selection_json", "TEXT"]]) {
+    if (!database.prepare("PRAGMA table_info(dungeon_runs)").all().some((c) => c.name === name)) database.exec(`ALTER TABLE dungeon_runs ADD COLUMN ${name} ${type}`);
+  }
+  for (const row of database.prepare("SELECT id, dungeon_id FROM dungeon_runs WHERE spot_id IS NULL").all()) {
+    const scope = defaultBiteSizedBoardScope(row.dungeon_id);
+    if (scope.spotId) database.prepare("UPDATE dungeon_runs SET spot_id = ?, spot_revision = ? WHERE id = ?").run(scope.spotId, scope.spotRevision, row.id);
+  }
+  database.exec("CREATE INDEX IF NOT EXISTS dungeon_runs_spot_times_idx ON dungeon_runs(dungeon_id, spot_id, spot_revision, difficulty_id, boss_difficulty, final_boss_id, duration_ms)");
   const insert = database.prepare(`INSERT INTO dungeon_runs
-    (id, dungeon_id, difficulty_id, duration_ms, full_clear, finished_at, party_json, bosses_json, submitted_by_account_id, received_at, boss_difficulty, final_boss_id)
-    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`);
+    (id, dungeon_id, difficulty_id, duration_ms, full_clear, finished_at, party_json, bosses_json, submitted_by_account_id, received_at, boss_difficulty, final_boss_id, spot_id, spot_revision, selection_json)
+    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`);
   const fail = (message) => { throw new ErrorType(message, 400, "invalid_dungeon_run"); };
   const record = (row) => ({ id: row.id, dungeonId: row.dungeon_id, difficultyId: row.difficulty_id,
+    ...(row.selection_json ? { biteSizedSelection: JSON.parse(row.selection_json) } : {}),
     ...(row.boss_difficulty > 0 ? { bossDifficulty: Number(row.boss_difficulty) } : {}),
     durationMs: Number(row.duration_ms), finishedAt: Number(row.finished_at), fullClear: row.full_clear === 1,
     party: JSON.parse(row.party_json), killedBossIds: JSON.parse(row.bosses_json) });
@@ -68,7 +78,15 @@ export function createDungeonLeaderboardRepository(database, { ErrorType }) {
     const bossDifficulty = input.bossDifficulty ?? 0;
     if (!Number.isInteger(bossDifficulty) || bossDifficulty < 0 || bossDifficulty > 10)
       fail("Choose a boss difficulty from 1 to 10.");
-    return { dungeon, difficultyId, difficulty, bossDifficulty };
+    const defaults = defaultBiteSizedBoardScope(dungeon.id);
+    const spotId = input.spotId || defaults.spotId;
+    const spotRevision = input.spotRevision == null ? defaults.spotRevision : Number(input.spotRevision);
+    if (spotId && (!Number.isSafeInteger(spotRevision) || spotRevision < 0)) fail("Choose a valid spot revision.");
+    if (spotId && biteSizedLayouts) {
+      const spot = biteSizedLayouts.getBiteSizedSpotRevision(spotId, spotRevision);
+      if (!dungeon.id.startsWith("randomized-bite-sized-") && spot.dungeonId !== dungeon.id) fail("Choose a spot in this dungeon.");
+    }
+    return { dungeon, difficultyId, difficulty, bossDifficulty, spotId, spotRevision };
   }
   function boardBossId(difficulty, requestedBossId) {
     const finalBossIds = difficulty.finalBossIds ?? [difficulty.finalBossId];
@@ -76,15 +94,17 @@ export function createDungeonLeaderboardRepository(database, { ErrorType }) {
     return difficulty.finalBossIds?.length ? requestedBossId || finalBossIds[0] : null;
   }
   function placement(run, selectedBossId = storedFinalBossId(run.dungeonId, run.difficultyId, run.killedBossIds)) {
+    const scope = run.biteSizedSelection ? { spotId: run.biteSizedSelection.spot.id, spotRevision: run.biteSizedSelection.spot.revision } : defaultBiteSizedBoardScope(run.dungeonId);
+    const spotCondition = scope.spotId ? "AND spot_id = ? AND spot_revision = ?" : "";
     const variant = dungeons.get(run.dungeonId)?.difficulties.find((entry) => entry.id === run.difficultyId)?.finalBossIds?.length;
     const bossCondition = variant ? "AND final_boss_id = ?" : "";
     const counts = database.prepare(`SELECT COUNT(*) AS total,
       COALESCE(SUM(CASE WHEN duration_ms < ? THEN 1 ELSE 0 END), 0) AS faster,
       COALESCE(SUM(full_clear), 0) AS full_total,
       COALESCE(SUM(CASE WHEN full_clear = 1 AND duration_ms < ? THEN 1 ELSE 0 END), 0) AS full_faster
-      FROM dungeon_runs WHERE dungeon_id = ? AND difficulty_id = ? AND boss_difficulty = ? ${bossCondition}`)
+      FROM dungeon_runs WHERE dungeon_id = ? AND difficulty_id = ? AND boss_difficulty = ? ${bossCondition} ${spotCondition}`)
       .get(run.durationMs, run.durationMs, run.dungeonId, run.difficultyId, run.bossDifficulty ?? 0,
-        ...(variant ? [selectedBossId] : []));
+        ...(variant ? [selectedBossId] : []), ...(scope.spotId ? [scope.spotId, scope.spotRevision] : []));
     return { finalRank: Number(counts.faster) + 1, finalTotal: Number(counts.total),
       fullRank: run.fullClear ? Number(counts.full_faster) + 1 : null, fullTotal: Number(counts.full_total) };
   }
@@ -92,6 +112,12 @@ export function createDungeonLeaderboardRepository(database, { ErrorType }) {
     submitDungeonRun(account, input) {
       if (!input || typeof input !== "object" || Array.isArray(input)) fail("Provide a completed dungeon run.");
       const { dungeon, difficultyId, difficulty, bossDifficulty } = selection(input);
+      let biteSizedSelection;
+      if (input.biteSizedSelection !== undefined) {
+        try { biteSizedSelection = biteSizedLayouts ? biteSizedLayouts.validateBiteSizedRunSelection(input.biteSizedSelection, dungeon.id) : normalizeBiteSizedSelection(input.biteSizedSelection); }
+        catch (error) { fail(error.message); }
+        if (biteSizedSelection.dungeonId !== dungeon.id || input.killedBossIds?.length !== 1 || input.killedBossIds[0] !== biteSizedSelection.boss.objectiveId) fail("Defeat the selected spot's boss.");
+      }
       if (input.bossDifficulty !== undefined && bossDifficulty === 0) fail("Choose a boss difficulty from 1 to 10.");
       if (!difficulty.finalBossId) fail("This dungeon does not have a configured final boss yet.");
       if (typeof input.id !== "string" || !/^[A-Za-z0-9_-]{8,100}$/.test(input.id)) fail("Provide a valid run id.");
@@ -121,18 +147,22 @@ export function createDungeonLeaderboardRepository(database, { ErrorType }) {
         ? difficulty.finalBossIds.some((id) => killedBossIds.includes(id))
         : difficulty.bossIds.every((id) => killedBossIds.includes(id));
       const run = { id: input.id, dungeonId: dungeon.id, difficultyId, durationMs: input.durationMs,
+        ...(biteSizedSelection ? { biteSizedSelection } : {}),
         ...(bossDifficulty > 0 ? { bossDifficulty } : {}),
         finishedAt: input.finishedAt, killedBossIds, party, fullClear };
       const existing = byId.get(run.id);
       if (existing) {
         if (JSON.stringify(record(existing)) !== JSON.stringify({ id: run.id, dungeonId: run.dungeonId,
-          difficultyId: run.difficultyId, ...(bossDifficulty > 0 ? { bossDifficulty } : {}),
+          difficultyId: run.difficultyId, ...(biteSizedSelection ? { biteSizedSelection } : {}), ...(bossDifficulty > 0 ? { bossDifficulty } : {}),
           durationMs: run.durationMs, finishedAt: run.finishedAt,
           fullClear: run.fullClear, party: run.party, killedBossIds: run.killedBossIds }))
           throw new ErrorType("That run id already belongs to a different result.", 409, "run_conflict");
-      } else insert.run(run.id, run.dungeonId, run.difficultyId, run.durationMs, fullClear ? 1 : 0,
+      } else {
+        const scope = biteSizedSelection ? { spotId: biteSizedSelection.spot.id, spotRevision: biteSizedSelection.spot.revision } : defaultBiteSizedBoardScope(run.dungeonId);
+        insert.run(run.id, run.dungeonId, run.difficultyId, run.durationMs, fullClear ? 1 : 0,
         run.finishedAt, JSON.stringify(party), JSON.stringify(killedBossIds), account?.id ?? null, Date.now(), bossDifficulty,
-        storedFinalBossId(run.dungeonId, run.difficultyId, run.killedBossIds));
+        storedFinalBossId(run.dungeonId, run.difficultyId, run.killedBossIds), scope.spotId, scope.spotRevision, biteSizedSelection ? JSON.stringify(biteSizedSelection) : null);
+      }
       return { run, placement: placement(run, existing?.final_boss_id ?? storedFinalBossId(run.dungeonId, run.difficultyId, run.killedBossIds)) };
     },
     getDungeonRun(id) {
@@ -142,7 +172,7 @@ export function createDungeonLeaderboardRepository(database, { ErrorType }) {
       return { run, placement: placement(run, row.final_boss_id) };
     },
     listDungeonLeaderboard(input) {
-      const { dungeon, difficultyId, difficulty, bossDifficulty } = selection(input);
+      const { dungeon, difficultyId, difficulty, bossDifficulty, spotId, spotRevision } = selection(input);
       const filter = input.clear || "final";
       if (!["full", "final"].includes(filter)) fail("Choose full dungeon clears or final boss clears.");
       const offset = Number(input.offset ?? 0);
@@ -152,12 +182,13 @@ export function createDungeonLeaderboardRepository(database, { ErrorType }) {
       const condition = filter === "full" ? "AND full_clear = 1" : "";
       const bossId = boardBossId(difficulty, input.bossId);
       const bossCondition = bossId ? "AND final_boss_id = ?" : "";
-      const args = [dungeon.id, difficultyId, bossDifficulty, ...(bossId ? [bossId] : [])];
+      const spotCondition = spotId ? "AND spot_id = ? AND spot_revision = ?" : "";
+      const args = [dungeon.id, difficultyId, bossDifficulty, ...(bossId ? [bossId] : []), ...(spotId ? [spotId, spotRevision] : [])];
       const rows = database.prepare(`SELECT *, RANK() OVER (ORDER BY duration_ms) AS place FROM dungeon_runs
-        WHERE dungeon_id = ? AND difficulty_id = ? AND boss_difficulty = ? ${condition} ${bossCondition}
+        WHERE dungeon_id = ? AND difficulty_id = ? AND boss_difficulty = ? ${condition} ${bossCondition} ${spotCondition}
         ORDER BY duration_ms, finished_at, id LIMIT ? OFFSET ?`).all(...args, limit, offset);
       const total = database.prepare(`SELECT COUNT(*) AS total FROM dungeon_runs
-        WHERE dungeon_id = ? AND difficulty_id = ? AND boss_difficulty = ? ${condition} ${bossCondition}`).get(...args).total;
+        WHERE dungeon_id = ? AND difficulty_id = ? AND boss_difficulty = ? ${condition} ${bossCondition} ${spotCondition}`).get(...args).total;
       return { entries: rows.map((row) => ({ ...record(row), rank: Number(row.place) })), total: Number(total) };
     },
   };

server/dungeon-race-service.mjs

@@ -1,5 +1,6 @@
 import { randomUUID } from "node:crypto";
 import { GameDatabaseError } from "./database.mjs";
+import { BITE_SIZED_LAYOUT_CATALOG } from "../shared/bite-sized-layouts.mjs";
 import { botOpponent, botProgress, botTierForRecord, compatibleDungeons, hashRaceSeed, raceDungeons, rollRaceAffixes,
   RACE_COUNTDOWN_MS, RACE_DISCONNECT_MS, RACE_MAX_MS, RACE_PREPARE_MS, RACE_QUEUE_WAIT_MS } from "./dungeon-race-rules.mjs";
 
@@ -31,6 +32,7 @@ export function createDungeonRaceService({ database, now = () => Date.now(), aut
     return { status: match.status === "active" && timestamp < match.startAt ? "countdown" : match.status,
       serverTime: timestamp, matchId: match.id, seed: match.seed, dungeonId: match.dungeonId,
       difficultyId: match.difficultyId, bossDifficulty: match.bossDifficulty, affixIds: match.affixIds,
+      ...(match.biteSizedSelection ? { biteSizedSelection: match.biteSizedSelection } : {}),
       prepareDeadline: match.createdAt + RACE_PREPARE_MS, startAt: match.startAt,
       ready: self?.readyAt != null, opponent: match.bot ?? (rival ? { type: "human", name: rival.username,
         source: rival.source, ready: rival.readyAt != null, finished: rival.clearAt != null } : null),
@@ -56,11 +58,13 @@ export function createDungeonRaceService({ database, now = () => Date.now(), aut
     const dungeon = choices[hashRaceSeed(id) % choices.length];
     const affixIds = rollRaceAffixes(id);
     const bot = right ? null : makeBot(id, left.accountId, affixIds);
+    const biteSizedSelection = database.resolveBiteSizedRun?.(dungeon.id, id,
+      BITE_SIZED_LAYOUT_CATALOG.dungeons.filter((d) => !database.getDungeonQueuePolicy().config.disabled.biteSized.includes(d.id)).map((d) => d.id));
     const participants = [left, ...(right ? [right] : [{ side: 1, accountId: null,
       characterId: null, username: bot.name, source: bot.source, role: null }])]
       .map((entry, side) => ({ side, accountId: entry.accountId, characterId: entry.characterId,
         username: entry.username, source: entry.source, role: entry.role }));
-    const match = database.createDungeonRaceMatch({ id, dungeonId: dungeon.id, seed: id, affixIds,
+    const match = database.createDungeonRaceMatch({ id, dungeonId: dungeon.id, seed: id, affixIds, biteSizedSelection,
       difficultyId: dungeon.defaultDifficultyId, createdAt: timestamp, participants, bot });
     matches.set(id, match);
     for (const participant of participants) if (participant.accountId) {

server/dungeon-race.test.mjs

@@ -186,7 +186,7 @@ test("both randomized creature pools validate and rank their cross-dungeon final
     assert.throws(() => service.finish(left, match.matchId, { runId: match.seed, bossIds: [wrongBossId] }), { status: 400 });
     assert.equal(service.finish(left, match.matchId, { runId: match.seed, bossIds }).result, "win");
     assert.equal(database.listDungeonRaceLeaderboard({ view: "times", period: "all", dungeonId,
-      bossId: bossIds[0] }, time()).total, 1);
+      bossId: bossIds[0], spotId: match.biteSizedSelection.spot.id, spotRevision: match.biteSizedSelection.spot.revision }, time()).total, 1);
   }
 }));
 

server/dungeon-races.mjs

@@ -1,6 +1,7 @@
 import catalog from "../src/game/generated/dungeonLeaderboardCatalog.generated.json" with { type: "json" };
 import { hashRaceSeed, RACE_PERIOD_MS, racePoolForDungeon } from "./dungeon-race-rules.mjs";
 import { normalizeRaceCombatLog } from "./dungeon-race-combat-log.mjs";
+import { defaultBiteSizedBoardScope } from "../shared/bite-sized-layouts.mjs";
 
 const dungeons = new Map(catalog.dungeons.map((entry) => [entry.id, entry]));
 
@@ -11,7 +12,7 @@ function raceBossId(dungeonId, difficultyId, seed) {
   return finalIds?.length ? finalIds[hashRaceSeed(objectiveSeed) % finalIds.length] : null;
 }
 
-export function createDungeonRaceRepository(database, { ErrorType, isGameMaster = () => false }) {
+export function createDungeonRaceRepository(database, { ErrorType, isGameMaster = () => false, biteSizedLayouts }) {
   database.exec(`
     CREATE TABLE IF NOT EXISTS dungeon_race_matches (
       id TEXT PRIMARY KEY, dungeon_id TEXT NOT NULL, seed TEXT NOT NULL,
@@ -64,6 +65,14 @@ export function createDungeonRaceRepository(database, { ErrorType, isGameMaster
   database.prepare("UPDATE dungeon_race_matches SET status = 'void', settled_at = ? WHERE status IN ('preparing', 'active')")
     .run(Date.now());
   const matchById = database.prepare("SELECT * FROM dungeon_race_matches WHERE id = ?");
+  for (const [name, type] of [["spot_id", "TEXT"], ["spot_revision", "INTEGER"], ["selection_json", "TEXT"]]) {
+    if (!database.prepare("PRAGMA table_info(dungeon_race_matches)").all().some((c) => c.name === name)) database.exec(`ALTER TABLE dungeon_race_matches ADD COLUMN ${name} ${type}`);
+  }
+  for (const row of database.prepare("SELECT id, dungeon_id FROM dungeon_race_matches WHERE spot_id IS NULL").all()) {
+    const scope = defaultBiteSizedBoardScope(row.dungeon_id);
+    if (scope.spotId) database.prepare("UPDATE dungeon_race_matches SET spot_id = ?, spot_revision = ? WHERE id = ?").run(scope.spotId, scope.spotRevision, row.id);
+  }
+  database.exec("CREATE INDEX IF NOT EXISTS dungeon_race_spot_times_idx ON dungeon_race_matches(dungeon_id, spot_id, spot_revision, boss_id, status)");
   const participantsById = database.prepare("SELECT * FROM dungeon_race_participants WHERE match_id = ? ORDER BY side");
   const insertMatch = database.prepare(`INSERT INTO dungeon_race_matches
     (id, dungeon_id, seed, difficulty_id, boss_difficulty, status, created_at, bot_json, boss_id, affix_ids_json)
@@ -104,6 +113,7 @@ export function createDungeonRaceRepository(database, { ErrorType, isGameMaster
     const match = matchById.get(id);
     if (!match) return null;
     return { id: match.id, dungeonId: match.dungeon_id, seed: match.seed,
+      ...(match.selection_json ? { biteSizedSelection: JSON.parse(match.selection_json) } : {}),
       difficultyId: match.difficulty_id, bossDifficulty: match.boss_difficulty,
       status: match.status, createdAt: match.created_at, startAt: match.start_at,
       settledAt: match.settled_at, winnerSide: match.winner_side,
@@ -114,12 +124,16 @@ export function createDungeonRaceRepository(database, { ErrorType, isGameMaster
         readyAt: row.ready_at, clearAt: row.clear_at, durationMs: row.duration_ms, outcome: row.outcome })) };
   }
   function createMatch(match) {
+    const selection = match.biteSizedSelection ?? biteSizedLayouts?.resolveBiteSizedRun(match.dungeonId, match.seed);
     transaction(() => {
       insertMatch.run(match.id, match.dungeonId, match.seed, match.difficultyId, match.createdAt,
         match.bot ? JSON.stringify(match.bot) : null, raceBossId(match.dungeonId, match.difficultyId, match.seed),
         JSON.stringify(match.affixIds ?? []));
       for (const participant of match.participants) insertParticipant.run(match.id, participant.side,
         participant.accountId, participant.characterId, participant.username, participant.source, participant.role);
+    const scope = selection ? { spotId: selection.spot.id, spotRevision: selection.spot.revision } : defaultBiteSizedBoardScope(match.dungeonId);
+    database.prepare("UPDATE dungeon_race_matches SET spot_id = ?, spot_revision = ?, selection_json = ?, boss_id = COALESCE(?, boss_id) WHERE id = ?")
+      .run(scope.spotId, scope.spotRevision, selection ? JSON.stringify(selection) : null, selection?.boss.objectiveId ?? null, match.id);
     });
     return getMatch(match.id);
   }
@@ -140,7 +154,7 @@ export function createDungeonRaceRepository(database, { ErrorType, isGameMaster
       || match.status === "void") throw new ErrorType("This race is not accepting clears.", 409, "race_not_active");
     const difficulty = dungeons.get(match.dungeonId)?.difficulties.find((entry) => entry.id === match.difficultyId);
     const finalIds = difficulty?.finalBossIds ?? (difficulty?.finalBossId ? [difficulty.finalBossId] : []);
-    const selectedBossId = raceBossId(match.dungeonId, match.difficultyId, match.seed);
+    const selectedBossId = match.biteSizedSelection?.boss.objectiveId ?? raceBossId(match.dungeonId, match.difficultyId, match.seed);
     if (!Array.isArray(bossIds) || bossIds.length > 100 || bossIds.some((value) => !difficulty?.bossIds.includes(value))
       || !bossIds.some((value) => finalIds.includes(value))
       || (selectedBossId && (bossIds.length !== 1 || bossIds[0] !== selectedBossId)))
@@ -216,7 +230,7 @@ export function createDungeonRaceRepository(database, { ErrorType, isGameMaster
     return { wins: Number(row.wins ?? 0), losses: Number(row.losses ?? 0) };
   }
   function leaderboard({ view = "wins", period = "30d", dungeonId = null, bossId = null,
-    limit = 20, offset = 0 } = {}, timestamp = Date.now()) {
+    spotId = null, spotRevision = null, limit = 20, offset = 0 } = {}, timestamp = Date.now()) {
     const dungeon = dungeons.get(dungeonId);
     const bossIds = dungeon?.difficulties.find((entry) => entry.id === dungeon.defaultDifficultyId)?.finalBossIds;
     if (!["wins", "times"].includes(view) || !["30d", "all"].includes(period)
@@ -230,7 +244,17 @@ export function createDungeonRaceRepository(database, { ErrorType, isGameMaster
     const byDungeon = dungeonId ? "AND m.dungeon_id = ?" : "";
     const selectedBossId = dungeonId && bossIds?.length ? bossId ?? bossIds[0] : null;
     const byBoss = selectedBossId ? "AND m.boss_id = ?" : "";
-    const args = [since, ...(dungeonId ? [dungeonId] : []), ...(selectedBossId ? [selectedBossId] : [])];
+    const defaults = defaultBiteSizedBoardScope(dungeonId);
+    const selectedSpotId = view === "times" ? spotId ?? defaults.spotId : null;
+    const selectedSpotRevision = view === "times" ? spotRevision == null ? defaults.spotRevision : Number(spotRevision) : null;
+    if (selectedSpotId && (!Number.isSafeInteger(selectedSpotRevision) || selectedSpotRevision < 0)) throw new ErrorType("Choose a valid spot revision.", 400, "invalid_race_leaderboard");
+    if (selectedSpotId && biteSizedLayouts) {
+      const spot = biteSizedLayouts.getBiteSizedSpotRevision(selectedSpotId, selectedSpotRevision);
+      if (!dungeonId.startsWith("randomized-bite-sized-") && spot.dungeonId !== dungeonId) throw new ErrorType("Choose a spot in this dungeon.", 400, "invalid_race_leaderboard");
+    }
+    const bySpot = selectedSpotId ? "AND m.spot_id = ? AND m.spot_revision = ?" : "";
+    const spotArgs = selectedSpotId ? [selectedSpotId, selectedSpotRevision] : [];
+    const args = [since, ...(dungeonId ? [dungeonId] : []), ...(selectedBossId ? [selectedBossId] : []), ...spotArgs];
     const query = view === "wins" ? `
       SELECT p.account_id AS accountId, a.username AS username,
         SUM(CASE WHEN p.outcome = 'win' THEN 1 ELSE 0 END) AS wins,
@@ -242,7 +266,7 @@ export function createDungeonRaceRepository(database, { ErrorType, isGameMaster
       : `SELECT p.account_id AS accountId, a.username AS username, MIN(p.duration_ms) AS durationMs
         FROM dungeon_race_participants p JOIN dungeon_race_matches m ON m.id = p.match_id
         JOIN accounts a ON a.id = p.account_id
-        WHERE p.clear_at >= ? ${byDungeon} ${byBoss} AND p.duration_ms IS NOT NULL
+        WHERE p.clear_at >= ? ${byDungeon} ${byBoss} ${bySpot} AND p.duration_ms IS NOT NULL
         GROUP BY p.account_id, a.username ORDER BY durationMs ASC, a.username COLLATE NOCASE ASC`;
     const all = database.prepare(query).all(...args);
     let lastValue = null;
@@ -250,7 +274,7 @@ export function createDungeonRaceRepository(database, { ErrorType, isGameMaster
     const bestAffixes = view === "times" ? database.prepare(`SELECT m.affix_ids_json AS affixIdsJson
       FROM dungeon_race_participants p JOIN dungeon_race_matches m ON m.id = p.match_id
       WHERE p.account_id = ? AND m.dungeon_id = ? AND m.boss_id = ?
-        AND p.duration_ms = ? AND p.clear_at >= ?
+        AND p.duration_ms = ? AND p.clear_at >= ? ${bySpot}
       ORDER BY p.clear_at ASC LIMIT 1`) : null;
     const ranked = all.map((row, index) => {
       const value = view === "wins" ? Number(row.wins) : Number(row.durationMs);
@@ -259,7 +283,7 @@ export function createDungeonRaceRepository(database, { ErrorType, isGameMaster
       return { ...row, rank, ...(view === "wins"
         ? { wins: Number(row.wins), losses: Number(row.losses) }
         : { durationMs: Number(row.durationMs), affixIds: JSON.parse(bestAffixes.get(
-          row.accountId, dungeonId, selectedBossId, row.durationMs, since)?.affixIdsJson ?? "[]") }) };
+          row.accountId, dungeonId, selectedBossId, row.durationMs, since, ...spotArgs)?.affixIdsJson ?? "[]") }) };
     });
     return { view, period, dungeonId, bossId: selectedBossId,
       total: ranked.length, entries: ranked.slice(offset, offset + limit) };

server/generated/bite-sized-navigation.mjs

@@ -0,0 +1,476 @@
+// Generated by scripts/generate-bite-sized-navigation.ts; edit the shared TypeScript source.
+
+// src/game/partyNavigation.ts
+var PARTY_NAVIGATION_WELD_TOLERANCE = 1e-3;
+var DISTANCE_EPSILON = 1e-9;
+function pointComponents(point) {
+  const values = "x" in point ? [point.x, point.y, point.z] : [point[0], point[1], point[2]];
+  if (!values.every(Number.isFinite)) {
+    throw new Error("Party navigation points must contain finite coordinates.");
+  }
+  return values;
+}
+function distanceSquared(left, right) {
+  const dx = right[0] - left[0];
+  const dy = right[1] - left[1];
+  const dz = right[2] - left[2];
+  return dx * dx + dy * dy + dz * dz;
+}
+function distance(left, right) {
+  return Math.sqrt(distanceSquared(left, right));
+}
+function buildPartyNavigationTriangleNodes(triangles, positions) {
+  const centroids = triangles.map(([a, b, c]) => Object.freeze([
+    (positions[a][0] + positions[b][0] + positions[c][0]) / 3,
+    (positions[a][1] + positions[b][1] + positions[c][1]) / 3,
+    (positions[a][2] + positions[b][2] + positions[c][2]) / 3
+  ]));
+  const edgeOwners = /* @__PURE__ */ new Map();
+  triangles.forEach(([a, b, c], triangleId) => {
+    for (const [left, right] of [[a, b], [b, c], [c, a]]) {
+      const portal = Object.freeze([
+        Math.min(left, right),
+        Math.max(left, right)
+      ]);
+      const key = `${portal[0]},${portal[1]}`;
+      const owners = edgeOwners.get(key);
+      if (owners) owners.push({ triangleId, portal });
+      else edgeOwners.set(key, [{ triangleId, portal }]);
+    }
+  });
+  const neighbors = triangles.map(() => []);
+  for (const owners of edgeOwners.values()) {
+    for (let leftIndex = 0; leftIndex < owners.length; leftIndex += 1) {
+      for (let rightIndex = leftIndex + 1; rightIndex < owners.length; rightIndex += 1) {
+        const left = owners[leftIndex];
+        const right = owners[rightIndex];
+        const cost = distance(centroids[left.triangleId], centroids[right.triangleId]);
+        neighbors[left.triangleId].push(Object.freeze({
+          to: right.triangleId,
+          portal: left.portal,
+          cost
+        }));
+        neighbors[right.triangleId].push(Object.freeze({
+          to: left.triangleId,
+          portal: right.portal,
+          cost
+        }));
+      }
+    }
+  }
+  return Object.freeze(centroids.map((centroid, id) => Object.freeze({
+    id,
+    centroid,
+    neighbors: Object.freeze(neighbors[id].sort((left, right) => left.to - right.to || left.portal[0] - right.portal[0] || left.portal[1] - right.portal[1]))
+  })));
+}
+function findNearestPartyNavigationNode(graph, point, maxDistance = Number.POSITIVE_INFINITY) {
+  const target = pointComponents(point);
+  const limit = Number.isFinite(maxDistance) ? Math.max(0, maxDistance) : Number.POSITIVE_INFINITY;
+  let nearest = null;
+  let nearestDistanceSquared = limit * limit;
+  for (const node of graph.nodes) {
+    const candidateDistanceSquared = distanceSquared(target, node.position);
+    if (candidateDistanceSquared < nearestDistanceSquared - DISTANCE_EPSILON || Math.abs(candidateDistanceSquared - nearestDistanceSquared) <= DISTANCE_EPSILON && (nearest === null || node.id < nearest.id)) {
+      nearest = node;
+      nearestDistanceSquared = candidateDistanceSquared;
+    }
+  }
+  return nearest ? Object.freeze({ node: nearest, distance: Math.sqrt(nearestDistanceSquared) }) : null;
+}
+function closestPointOnSegment(point, start, end) {
+  const segmentX = end[0] - start[0];
+  const segmentY = end[1] - start[1];
+  const segmentZ = end[2] - start[2];
+  const lengthSquared = segmentX * segmentX + segmentY * segmentY + segmentZ * segmentZ;
+  if (lengthSquared <= DISTANCE_EPSILON) return [start[0], start[1], start[2]];
+  const projection = Math.max(0, Math.min(1, ((point[0] - start[0]) * segmentX + (point[1] - start[1]) * segmentY + (point[2] - start[2]) * segmentZ) / lengthSquared));
+  return [
+    start[0] + segmentX * projection,
+    start[1] + segmentY * projection,
+    start[2] + segmentZ * projection
+  ];
+}
+function closestPointOnTriangle(point, a, b, c) {
+  const ab = [b[0] - a[0], b[1] - a[1], b[2] - a[2]];
+  const ac = [c[0] - a[0], c[1] - a[1], c[2] - a[2]];
+  const crossX = ab[1] * ac[2] - ab[2] * ac[1];
+  const crossY = ab[2] * ac[0] - ab[0] * ac[2];
+  const crossZ = ab[0] * ac[1] - ab[1] * ac[0];
+  if (crossX * crossX + crossY * crossY + crossZ * crossZ <= DISTANCE_EPSILON) {
+    const candidates = [
+      closestPointOnSegment(point, a, b),
+      closestPointOnSegment(point, b, c),
+      closestPointOnSegment(point, c, a)
+    ];
+    return candidates.reduce((best, candidate) => distanceSquared(point, candidate) < distanceSquared(point, best) - DISTANCE_EPSILON ? candidate : best);
+  }
+  const ap = [point[0] - a[0], point[1] - a[1], point[2] - a[2]];
+  const d1 = ab[0] * ap[0] + ab[1] * ap[1] + ab[2] * ap[2];
+  const d2 = ac[0] * ap[0] + ac[1] * ap[1] + ac[2] * ap[2];
+  if (d1 <= 0 && d2 <= 0) return [a[0], a[1], a[2]];
+  const bp = [point[0] - b[0], point[1] - b[1], point[2] - b[2]];
+  const d3 = ab[0] * bp[0] + ab[1] * bp[1] + ab[2] * bp[2];
+  const d4 = ac[0] * bp[0] + ac[1] * bp[1] + ac[2] * bp[2];
+  if (d3 >= 0 && d4 <= d3) return [b[0], b[1], b[2]];
+  const vc = d1 * d4 - d3 * d2;
+  if (vc <= 0 && d1 >= 0 && d3 <= 0) {
+    const along = d1 / (d1 - d3);
+    return [a[0] + ab[0] * along, a[1] + ab[1] * along, a[2] + ab[2] * along];
+  }
+  const cp = [point[0] - c[0], point[1] - c[1], point[2] - c[2]];
+  const d5 = ab[0] * cp[0] + ab[1] * cp[1] + ab[2] * cp[2];
+  const d6 = ac[0] * cp[0] + ac[1] * cp[1] + ac[2] * cp[2];
+  if (d6 >= 0 && d5 <= d6) return [c[0], c[1], c[2]];
+  const vb = d5 * d2 - d1 * d6;
+  if (vb <= 0 && d2 >= 0 && d6 <= 0) {
+    const along = d2 / (d2 - d6);
+    return [a[0] + ac[0] * along, a[1] + ac[1] * along, a[2] + ac[2] * along];
+  }
+  const va = d3 * d6 - d5 * d4;
+  if (va <= 0 && d4 - d3 >= 0 && d5 - d6 >= 0) {
+    const along = (d4 - d3) / (d4 - d3 + (d5 - d6));
+    return [
+      b[0] + (c[0] - b[0]) * along,
+      b[1] + (c[1] - b[1]) * along,
+      b[2] + (c[2] - b[2]) * along
+    ];
+  }
+  const denominator = 1 / (va + vb + vc);
+  const alongB = vb * denominator;
+  const alongC = vc * denominator;
+  return [
+    a[0] + ab[0] * alongB + ac[0] * alongC,
+    a[1] + ab[1] * alongB + ac[1] * alongC,
+    a[2] + ab[2] * alongB + ac[2] * alongC
+  ];
+}
+function findNearestPartyNavigationSurface(graph, point, maxDistance = Number.POSITIVE_INFINITY) {
+  const triangles = graph.triangles;
+  if (!triangles?.length) {
+    const nearest = findNearestPartyNavigationNode(graph, point, maxDistance);
+    return nearest ? Object.freeze({
+      position: nearest.node.position,
+      triangleId: -1,
+      distance: nearest.distance
+    }) : null;
+  }
+  const target = pointComponents(point);
+  const limit = Number.isFinite(maxDistance) ? Math.max(0, maxDistance) : Number.POSITIVE_INFINITY;
+  let nearestPosition = null;
+  let nearestTriangleId = -1;
+  let nearestDistanceSquared = limit * limit;
+  for (let triangleId = 0; triangleId < triangles.length; triangleId += 1) {
+    const [a, b, c] = triangles[triangleId];
+    const candidate = closestPointOnTriangle(
+      target,
+      graph.nodes[a].position,
+      graph.nodes[b].position,
+      graph.nodes[c].position
+    );
+    const candidateDistanceSquared = distanceSquared(target, candidate);
+    if (candidateDistanceSquared < nearestDistanceSquared - DISTANCE_EPSILON || Math.abs(candidateDistanceSquared - nearestDistanceSquared) <= DISTANCE_EPSILON && (nearestTriangleId < 0 || triangleId < nearestTriangleId)) {
+      nearestPosition = candidate;
+      nearestTriangleId = triangleId;
+      nearestDistanceSquared = candidateDistanceSquared;
+    }
+  }
+  return nearestPosition ? Object.freeze({
+    position: Object.freeze([...nearestPosition]),
+    triangleId: nearestTriangleId,
+    distance: Math.sqrt(nearestDistanceSquared)
+  }) : null;
+}
+function pointToSegmentDistance(point, start, end) {
+  return distance(point, closestPointOnSegment(point, start, end));
+}
+function simplifyPartyNavigationPath(points, tolerance = PARTY_NAVIGATION_WELD_TOLERANCE) {
+  const safeTolerance = Number.isFinite(tolerance) ? Math.max(0, tolerance) : 0;
+  const simplified = [];
+  for (const rawPoint of points) {
+    const point = Object.freeze([...pointComponents(rawPoint)]);
+    if (simplified.length && distance(simplified[simplified.length - 1], point) <= safeTolerance) continue;
+    simplified.push(point);
+    while (simplified.length >= 3) {
+      const end = simplified[simplified.length - 1];
+      const middle = simplified[simplified.length - 2];
+      const start = simplified[simplified.length - 3];
+      if (pointToSegmentDistance(middle, start, end) > safeTolerance) break;
+      simplified.splice(simplified.length - 2, 1);
+    }
+  }
+  return Object.freeze(simplified);
+}
+function compareOpenEntries(left, right) {
+  return left.f - right.f || left.h - right.h || left.id - right.id;
+}
+var OpenHeap = class {
+  entries = [];
+  get length() {
+    return this.entries.length;
+  }
+  push(entry) {
+    const entries = this.entries;
+    entries.push(entry);
+    let index = entries.length - 1;
+    while (index > 0) {
+      const parent = Math.floor((index - 1) / 2);
+      if (compareOpenEntries(entries[parent], entry) <= 0) break;
+      entries[index] = entries[parent];
+      index = parent;
+    }
+    entries[index] = entry;
+  }
+  pop() {
+    const entries = this.entries;
+    if (!entries.length) return null;
+    const first = entries[0];
+    const last = entries.pop();
+    if (entries.length) {
+      let index = 0;
+      while (true) {
+        const left = index * 2 + 1;
+        if (left >= entries.length) break;
+        const right = left + 1;
+        const bestChild = right < entries.length && compareOpenEntries(entries[right], entries[left]) < 0 ? right : left;
+        if (compareOpenEntries(entries[bestChild], last) >= 0) break;
+        entries[index] = entries[bestChild];
+        index = bestChild;
+      }
+      entries[index] = last;
+    }
+    return first;
+  }
+};
+function findPartyNavigationNodePath(graph, startId, endId) {
+  if (startId === endId) return Object.freeze([startId]);
+  const nodeCount = graph.nodes.length;
+  const cameFrom = new Int32Array(nodeCount);
+  cameFrom.fill(-1);
+  const scores = new Float64Array(nodeCount);
+  scores.fill(Number.POSITIVE_INFINITY);
+  scores[startId] = 0;
+  const closed = new Uint8Array(nodeCount);
+  const open = new OpenHeap();
+  const initialHeuristic = distance(graph.nodes[startId].position, graph.nodes[endId].position);
+  open.push({ id: startId, g: 0, h: initialHeuristic, f: initialHeuristic });
+  while (open.length) {
+    const current = open.pop();
+    if (closed[current.id] || current.g > scores[current.id] + DISTANCE_EPSILON) continue;
+    if (current.id === endId) break;
+    closed[current.id] = 1;
+    for (const edge of graph.nodes[current.id].neighbors) {
+      if (closed[edge.to]) continue;
+      const tentative = scores[current.id] + edge.cost;
+      if (tentative >= scores[edge.to] - DISTANCE_EPSILON) continue;
+      cameFrom[edge.to] = current.id;
+      scores[edge.to] = tentative;
+      const heuristic = distance(graph.nodes[edge.to].position, graph.nodes[endId].position);
+      open.push({ id: edge.to, g: tentative, h: heuristic, f: tentative + heuristic });
+    }
+  }
+  if (cameFrom[endId] < 0) return null;
+  const nodeIds = [endId];
+  let cursor = endId;
+  while (cursor !== startId && nodeIds.length <= nodeCount) {
+    cursor = cameFrom[cursor];
+    if (cursor < 0) return null;
+    nodeIds.push(cursor);
+  }
+  if (cursor !== startId) return null;
+  nodeIds.reverse();
+  return Object.freeze(nodeIds);
+}
+function findPartyNavigationTrianglePath(triangleNodes, startId, endId, blocked) {
+  if (blocked?.[startId] || blocked?.[endId]) return null;
+  if (startId === endId) return Object.freeze([startId]);
+  const nodeCount = triangleNodes.length;
+  const cameFrom = new Int32Array(nodeCount);
+  cameFrom.fill(-1);
+  const scores = new Float64Array(nodeCount);
+  scores.fill(Number.POSITIVE_INFINITY);
+  scores[startId] = 0;
+  const closed = new Uint8Array(nodeCount);
+  const open = new OpenHeap();
+  const initialHeuristic = distance(triangleNodes[startId].centroid, triangleNodes[endId].centroid);
+  open.push({ id: startId, g: 0, h: initialHeuristic, f: initialHeuristic });
+  while (open.length) {
+    const current = open.pop();
+    if (closed[current.id] || current.g > scores[current.id] + DISTANCE_EPSILON) continue;
+    if (current.id === endId) break;
+    closed[current.id] = 1;
+    for (const edge of triangleNodes[current.id].neighbors) {
+      if (blocked?.[edge.to] || closed[edge.to]) continue;
+      const tentative = scores[current.id] + edge.cost;
+      if (tentative >= scores[edge.to] - DISTANCE_EPSILON) continue;
+      cameFrom[edge.to] = current.id;
+      scores[edge.to] = tentative;
+      const heuristic = distance(triangleNodes[edge.to].centroid, triangleNodes[endId].centroid);
+      open.push({ id: edge.to, g: tentative, h: heuristic, f: tentative + heuristic });
+    }
+  }
+  if (cameFrom[endId] < 0) return null;
+  const triangleIds = [endId];
+  let cursor = endId;
+  while (cursor !== startId && triangleIds.length <= nodeCount) {
+    cursor = cameFrom[cursor];
+    if (cursor < 0) return null;
+    triangleIds.push(cursor);
+  }
+  if (cursor !== startId) return null;
+  triangleIds.reverse();
+  return Object.freeze(triangleIds);
+}
+function findPartyNavigationNodeSnappedPath(graph, start, end, options) {
+  const maxSnapDistance = options.maxSnapDistance ?? Number.POSITIVE_INFINITY;
+  const startMatch = findNearestPartyNavigationNode(
+    graph,
+    start,
+    options.maxStartSnapDistance ?? maxSnapDistance
+  );
+  const endMatch = findNearestPartyNavigationNode(
+    graph,
+    end,
+    options.maxEndSnapDistance ?? maxSnapDistance
+  );
+  if (!startMatch || !endMatch) return null;
+  const nodeIds = findPartyNavigationNodePath(graph, startMatch.node.id, endMatch.node.id);
+  return nodeIds ? simplifyPartyNavigationPath(
+    nodeIds.map((id) => graph.nodes[id].position),
+    options.simplifyTolerance ?? graph.weldTolerance
+  ) : null;
+}
+function findPartyNavigationPath(graph, start, end, options = {}) {
+  if (!graph.triangles?.length) {
+    return findPartyNavigationNodeSnappedPath(graph, start, end, options);
+  }
+  const maxSnapDistance = options.maxSnapDistance ?? Number.POSITIVE_INFINITY;
+  const startMatch = findNearestPartyNavigationSurface(
+    graph,
+    start,
+    options.maxStartSnapDistance ?? maxSnapDistance
+  );
+  const endMatch = findNearestPartyNavigationSurface(
+    graph,
+    end,
+    options.maxEndSnapDistance ?? maxSnapDistance
+  );
+  if (!startMatch || !endMatch) return null;
+  const triangleNodes = graph.triangleNodes?.length === graph.triangles.length ? graph.triangleNodes : buildPartyNavigationTriangleNodes(
+    graph.triangles,
+    graph.nodes.map((node) => node.position)
+  );
+  const blocked = new Uint8Array(triangleNodes.length);
+  const maximumReroutes = Math.min(64, triangleNodes.length);
+  for (let reroute = 0; reroute <= maximumReroutes; reroute += 1) {
+    const triangleIds = findPartyNavigationTrianglePath(
+      triangleNodes,
+      startMatch.triangleId,
+      endMatch.triangleId,
+      blocked
+    );
+    if (!triangleIds) return null;
+    const path = [startMatch.position];
+    for (let index = 0; index < triangleIds.length - 1; index += 1) {
+      const from = triangleIds[index];
+      const to = triangleIds[index + 1];
+      const transition = triangleNodes[from].neighbors.find((edge) => edge.to === to);
+      if (!transition) return null;
+      const [a, b] = transition.portal;
+      const left = graph.nodes[a].position;
+      const right = graph.nodes[b].position;
+      path.push(Object.freeze([
+        (left[0] + right[0]) / 2,
+        (left[1] + right[1]) / 2,
+        (left[2] + right[2]) / 2
+      ]));
+    }
+    path.push(endMatch.position);
+    let rejectedSegment = -1;
+    if (options.routeSegmentAllowed) {
+      for (let index = 0; index < path.length - 1; index += 1) {
+        if (!options.routeSegmentAllowed(path[index], path[index + 1])) {
+          rejectedSegment = index;
+          break;
+        }
+      }
+    }
+    if (rejectedSegment < 0) return Object.freeze(path);
+    if (triangleIds.length <= 1 || reroute >= maximumReroutes) return null;
+    const blockedTriangleId = rejectedSegment === 0 ? triangleIds[1] : rejectedSegment === triangleIds.length - 1 ? triangleIds[triangleIds.length - 2] : triangleIds[rejectedSegment];
+    if (blocked[blockedTriangleId]) return null;
+    blocked[blockedTriangleId] = 1;
+  }
+  return null;
+}
+
+// src/game/partySpawnSlots.ts
+function derivePartySpawnSlots(spawn, partySize = 5) {
+  const size = Math.max(1, Math.min(5, Math.trunc(partySize)));
+  const offsets = [
+    [0, 0],
+    [-1.65, -1.8],
+    [1.65, -1.8],
+    [-3.05, -3.5],
+    [3.05, -3.5]
+  ];
+  const sin = Math.sin(spawn.yaw);
+  const cos = Math.cos(spawn.yaw);
+  return Object.freeze(offsets.slice(0, size).map(([lateral, forward]) => ({
+    footPosition: [
+      spawn.footPosition[0] + lateral * cos + forward * sin,
+      spawn.footPosition[1],
+      spawn.footPosition[2] - lateral * sin + forward * cos
+    ],
+    yaw: spawn.yaw
+  })));
+}
+
+// src/game/biteSizedSpotNavigation.ts
+function biteSizedRouteSegmentClear(blockers, from, to) {
+  return blockers.every((blocker) => {
+    const sin = Math.sin(blocker.yaw), cos = Math.cos(blocker.yaw);
+    const local = (point) => {
+      const x = point[0] - blocker.position[0], z = point[2] - blocker.position[2];
+      return [x * cos - z * sin, point[1] - blocker.position[1], x * sin + z * cos];
+    };
+    const start = local(from), end = local(to);
+    let enter = 0, leave = 1;
+    for (let axis = 0; axis < 3; axis++) {
+      const extent = blocker.halfExtents[axis] + (axis === 1 ? 1 : 0.34);
+      const delta = end[axis] - start[axis];
+      if (Math.abs(delta) < 1e-9) {
+        if (Math.abs(start[axis]) > extent) return true;
+        continue;
+      }
+      const first = (-extent - start[axis]) / delta, second = (extent - start[axis]) / delta;
+      enter = Math.max(enter, Math.min(first, second));
+      leave = Math.min(leave, Math.max(first, second));
+      if (enter > leave) return true;
+    }
+    return false;
+  });
+}
+function validateBiteSizedSpotNavigation(spot, graph, regions, blockers = []) {
+  const start = findNearestPartyNavigationSurface(graph, spot.partySpawn.footPosition, 0.75);
+  if (!start) throw new Error(`${spot.name}: Party anchor is off the walkable floor. Move its spawn point.`);
+  const points = [
+    ...derivePartySpawnSlots(spot.partySpawn).map((s, i) => ({ label: `Party member ${i + 1}`, position: s.footPosition, snapDistance: i === 0 ? 0.75 : 6 })),
+    ...spot.mobs.map((m, i) => ({ label: `Mob ${i + 1}`, position: m.position })),
+    { label: "Boss", position: spot.bossSpawn.footPosition }
+  ];
+  for (const point of points) {
+    const match = findNearestPartyNavigationSurface(graph, point.position, point.snapDistance ?? 0.75);
+    if (!match) throw new Error(`${spot.name}: ${point.label} is off the walkable floor. Move its spawn point.`);
+    if (!biteSizedRouteSegmentClear(blockers, match.position, match.position)) throw new Error(`${spot.name}: ${point.label} is inside a route blocker.`);
+    const reachable = regions ? regions[start.triangleId] === regions[match.triangleId] : findPartyNavigationPath(graph, start.position, match.position, {
+      maxSnapDistance: 0.75,
+      routeSegmentAllowed: (from, to) => biteSizedRouteSegmentClear(blockers, from, to)
+    });
+    if (!reachable) throw new Error(`${spot.name}: ${point.label} cannot be reached from the party start.`);
+  }
+}
+export {
+  biteSizedRouteSegmentClear,
+  validateBiteSizedSpotNavigation
+};

server/server.mjs

@@ -311,6 +311,8 @@ export function createGameServer(options = {}) {
           period: url.searchParams.get("period") ?? "30d",
           dungeonId: url.searchParams.get("dungeon") || null,
           bossId: url.searchParams.get("boss") || null,
+          spotId: url.searchParams.get("spot") || null,
+          spotRevision: url.searchParams.get("spotRevision"),
           limit: Number(url.searchParams.get("limit") ?? 20),
           offset: Number(url.searchParams.get("offset") ?? 0),
         }));
@@ -365,6 +367,7 @@ export function createGameServer(options = {}) {
         json(response, 200, gameDatabase.listDungeonLeaderboard({ dungeonId: url.searchParams.get("dungeon"),
           difficultyId: url.searchParams.get("difficulty"), clear: url.searchParams.get("clear"),
           bossId: url.searchParams.get("boss"),
+          spotId: url.searchParams.get("spot"), spotRevision: url.searchParams.get("spotRevision"),
           bossDifficulty: url.searchParams.has("bossDifficulty") ? Number(url.searchParams.get("bossDifficulty")) : undefined,
           offset: url.searchParams.get("offset"), limit: url.searchParams.get("limit") }));
         return;
@@ -537,6 +540,25 @@ export function createGameServer(options = {}) {
         json(response, 201, arenaService.socketTicket(account.id));
         return;
       }
+      if (["/api/bite-sized-layouts", "/api/gm/bite-sized-layouts"].includes(url.pathname)) {
+        const privileged = url.pathname.startsWith("/api/gm/");
+        let account = null;
+        if (privileged) {
+          account = gameDatabase.authenticate(bearerToken(request));
+          if (!gameDatabase.isGameMaster(account)) throw new GameDatabaseError("Game Master access is required.", 403, "gm_required");
+        }
+        if (request.method === "GET") {
+          const spotId = url.searchParams.get("spotId");
+          json(response, 200, spotId ? gameDatabase.getBiteSizedSpotRevision(spotId, Number(url.searchParams.get("revision")))
+            : url.searchParams.get("history") === "1" ? gameDatabase.listBiteSizedSpotRevisions() : gameDatabase.getBiteSizedLayouts());
+          return;
+        }
+        if (privileged && request.method === "PUT") {
+          const body = await readJson(request, bodyLimit);
+          json(response, 200, gameDatabase.putBiteSizedLayouts(account, body.expectedRevision, body.config));
+          return;
+        }
+      }
       if (url.pathname === "/api/manastorm-config" && request.method === "GET") {
         const current = gameDatabase.getManastormConfig();
         json(response, 200, {

shared/bite-sized-catalog.json

@@ -0,0 +1 @@
+{"dungeons":[{"id":"bite-sized-stormwind-stockade","sourceDungeonId":"stormwind-stockade","title":"Stormwind Stockade","expansion":"classic","bounds":{"min":[-237.771,-55.1896,-181.922],"max":[-9.23,1.66,192.931]},"difficultyIds":["normal"],"legacyBlockers":[{"position":[-129.17,-22.1,16.4],"yaw":0,"halfExtents":[6,5.2,0.65]},{"position":[-129.17,-22.1,-16.4],"yaw":0,"halfExtents":[6,5.2,0.65]}],"bossCandidates":[{"sourceDungeonId":"stormwind-stockade","entityId":"entry-1696","objectiveId":"creature-84027","name":"Targorr the Dread"},{"sourceDungeonId":"stormwind-stockade","entityId":"entry-1666","objectiveId":"creature-79088","name":"Kam Deepfury"},{"sourceDungeonId":"stormwind-stockade","entityId":"entry-1717","objectiveId":"creature-79098","name":"Hamhock"},{"sourceDungeonId":"stormwind-stockade","entityId":"entry-1716","objectiveId":"creature-79124","name":"Bazil Thredd"},{"sourceDungeonId":"stormwind-stockade","entityId":"entry-1663","objectiveId":"creature-79116","name":"Dextren Ward"}]},{"id":"bite-sized-wailing-caverns","sourceDungeonId":"wailing-caverns","title":"Wailing Caverns","expansion":"classic","bounds":{"min":[-191.6667,-119.1605,-370.8333],"max":[483.4794,56.469,554.3612]},"difficultyIds":["normal"],"legacyBlockers":[],"bossCandidates":[{"sourceDungeonId":"wailing-caverns","entityId":"lady-anacondra","objectiveId":"lady-anacondra-spawn","name":"Lady Anacondra"},{"sourceDungeonId":"wailing-caverns","entityId":"kresh","objectiveId":"kresh-patrol:kresh-roaming","name":"Kresh"},{"sourceDungeonId":"wailing-caverns","entityId":"lord-cobrahn","objectiveId":"lord-cobrahn-spawn","name":"Lord Cobrahn"},{"sourceDungeonId":"wailing-caverns","entityId":"lord-pythas","objectiveId":"lord-pythas-spawn","name":"Lord Pythas"},{"sourceDungeonId":"wailing-caverns","entityId":"skum","objectiveId":"skum-spawn","name":"Skum"},{"sourceDungeonId":"wailing-caverns","entityId":"lord-serpentis","objectiveId":"lord-serpentis-spawn","name":"Lord Serpentis"},{"sourceDungeonId":"wailing-caverns","entityId":"verdan-the-everliving","objectiveId":"verdan-spawn","name":"Verdan the Everliving"},{"sourceDungeonId":"wailing-caverns","entityId":"mutanus-the-devourer","objectiveId":"mutanus-spawn","name":"Mutanus the Devourer"}]},{"id":"bite-sized-deadmines-ship","sourceDungeonId":"deadmines","title":"The Deadmines","expansion":"classic","bounds":{"min":[-964.0937,-17.4997,-358.1248],"max":[-304.6317,81.9028,45.0756]},"difficultyIds":["normal"],"legacyBlockers":[],"bossCandidates":[{"sourceDungeonId":"deadmines","entityId":"entry-644","objectiveId":"creature-79168","name":"Rhahk'zor"},{"sourceDungeonId":"deadmines","entityId":"entry-642","objectiveId":"creature-79223","name":"Sneed"},{"sourceDungeonId":"deadmines","entityId":"entry-1763","objectiveId":"creature-79206","name":"Gilnid"},{"sourceDungeonId":"deadmines","entityId":"entry-646","objectiveId":"creature-79337","name":"Mr. Smite"},{"sourceDungeonId":"deadmines","entityId":"entry-645","objectiveId":"creature-79344","name":"Cookie"},{"sourceDungeonId":"deadmines","entityId":"entry-647","objectiveId":"creature-79333","name":"Captain Greenskin"},{"sourceDungeonId":"deadmines","entityId":"entry-639","objectiveId":"creature-79336","name":"Edwin VanCleef"}]},{"id":"bite-sized-utgarde-pinnacle-skadi","sourceDungeonId":"utgarde-pinnacle","title":"Utgarde Pinnacle","expansion":"wrath","bounds":{"min":[-552.325,55.0607,179.479],"max":[-190.62,139.777,629.117]},"difficultyIds":["normal","heroic"],"legacyBlockers":[],"bossCandidates":[{"sourceDungeonId":"utgarde-pinnacle","entityId":"entry-26668","objectiveId":"encounter-577","name":"Svala Sorrowgrave"},{"sourceDungeonId":"utgarde-pinnacle","entityId":"entry-26687","objectiveId":"creature-126102","name":"Gortok Palehoof"},{"sourceDungeonId":"utgarde-pinnacle","entityId":"entry-26693","objectiveId":"creature-126103","name":"Skadi the Ruthless"},{"sourceDungeonId":"utgarde-pinnacle","entityId":"entry-26861","objectiveId":"creature-126255","name":"King Ymiron"}]},{"id":"bite-sized-forsaken-abbey-ancalon","sourceDungeonId":"forsaken-abbey","title":"Forsaken Abbey","expansion":"runewaker","bounds":{"min":[-29.38274,-21.74707,-110.44788],"max":[416.5376,34.07087,85.36886]},"difficultyIds":["normal"],"legacyBlockers":[],"bossCandidates":[{"sourceDungeonId":"forsaken-abbey","entityId":"rw-fa-100070","objectiveId":"rw-fa-spawn-7384","name":"Necromage Keeper 1"},{"sourceDungeonId":"forsaken-abbey","entityId":"rw-fa-100070","objectiveId":"rw-fa-spawn-7426","name":"Necromage Keeper 2"},{"sourceDungeonId":"forsaken-abbey","entityId":"rw-fa-100070","objectiveId":"rw-fa-spawn-7379","name":"Necromage Keeper 3"},{"sourceDungeonId":"forsaken-abbey","entityId":"rw-fa-100070","objectiveId":"rw-fa-spawn-7425","name":"Necromage Keeper 4"},{"sourceDungeonId":"forsaken-abbey","entityId":"rw-fa-100561","objectiveId":"rw-fa-spawn-7472","name":"Flowing Chaos"},{"sourceDungeonId":"forsaken-abbey","entityId":"rw-fa-100562","objectiveId":"rw-fa-spawn-7755","name":Line truncated

shared/bite-sized-layouts.d.mts

@@ -0,0 +1,33 @@
+export type LayoutVector = readonly [number, number, number];
+export interface LayoutSpawn { readonly footPosition: LayoutVector; readonly yaw: number }
+export interface BiteSizedLayoutBlocker { readonly position: LayoutVector; readonly yaw: number; readonly halfExtents: LayoutVector }
+export interface BiteSizedMobPlacement { readonly id: string; readonly sourceDungeonId: string; readonly entityId: string; readonly position: LayoutVector; readonly yaw: number; readonly spawnMask?: number; readonly spawnChance?: number }
+export interface BiteSizedSpot {
+  readonly id: string; readonly dungeonId: string; readonly sourceDungeonId: string; readonly name: string; readonly revision: number;
+  readonly legacyLayout: boolean; readonly partySpawn: LayoutSpawn; readonly mobs: readonly BiteSizedMobPlacement[];
+  readonly bossSpawn: LayoutSpawn; readonly bossActivation: "immediate" | "after-mobs";
+}
+export interface BiteSizedConfig { readonly schemaVersion: 1; readonly spots: readonly BiteSizedSpot[] }
+export interface BiteSizedCreatureRef { readonly sourceDungeonId: string; readonly entityId: string }
+export interface BiteSizedBossRef extends BiteSizedCreatureRef { readonly objectiveId: string; readonly name: string }
+export interface BiteSizedRunSelection {
+  readonly legacyRandomized?: true;
+  readonly schemaVersion: 1; readonly dungeonId: string; readonly spot: BiteSizedSpot; readonly boss: BiteSizedBossRef;
+  readonly mobs: readonly (BiteSizedCreatureRef & { readonly placementId: string })[];
+}
+export interface PublishedBiteSizedConfig { readonly revision: number; readonly updatedAt: number | null; readonly config: BiteSizedConfig }
+export const BITE_SIZED_DEFAULT_CONFIG: BiteSizedConfig;
+export const BITE_SIZED_LAYOUT_CATALOG: {
+  readonly dungeons: readonly { readonly id: string; readonly sourceDungeonId: string; readonly title: string; readonly expansion: string;
+    readonly bounds: { readonly min: LayoutVector; readonly max: LayoutVector }; readonly difficultyIds: readonly string[]; readonly bossCandidates: readonly BiteSizedBossRef[]; readonly legacyBlockers: readonly BiteSizedLayoutBlocker[] }[];
+  readonly creatures: readonly (BiteSizedCreatureRef & { readonly kind: "mob" | "boss"; readonly name: string; readonly dungeonTitle: string; readonly modelUrl: string | null })[];
+  readonly pools: Readonly<Record<string, readonly (BiteSizedBossRef & { readonly kind: "mob" | "boss"; readonly key: string })[]>>;
+};
+export function normalizeBiteSizedSpot(value: unknown): BiteSizedSpot;
+export function normalizeBiteSizedConfig(value: unknown): BiteSizedConfig;
+export function normalizeBiteSizedSelection(value: unknown): BiteSizedRunSelection;
+export function biteSizedGameplayKey(value: BiteSizedSpot): string;
+export function biteSizedSeedHash(seed: string): number;
+export function isLayoutBiteSizedDungeon(id: string): boolean;
+export function defaultBiteSizedBoardScope(id: string): { readonly spotId: string | null; readonly spotRevision: number | null };
+export function selectBiteSizedRun(config: BiteSizedConfig, dungeonId: string, seed: string, options?: { readonly eligibleDungeonIds?: readonly string[]; readonly spotId?: string }): BiteSizedRunSelection;

shared/bite-sized-layouts.mjs

@@ -0,0 +1,124 @@
+import bundled from "./bite-sized-defaults.json" with { type: "json" };
+import catalog from "./bite-sized-catalog.json" with { type: "json" };
+
+export const BITE_SIZED_DEFAULT_CONFIG = bundled;
+export const BITE_SIZED_LAYOUT_CATALOG = catalog;
+const dungeonBySource = new Map(catalog.dungeons.map((d) => [d.sourceDungeonId, d]));
+const creatureByRef = new Map(catalog.creatures.map((c) => [`${c.sourceDungeonId}:${c.entityId}`, c]));
+const fail = (message) => { throw new Error(message); };
+const identifier = (value) => typeof value === "string" && /^[A-Za-z0-9_:.-]{1,100}$/.test(value);
+const object = (value) => value && typeof value === "object" && !Array.isArray(value);
+function vector(value, label) {
+  if (!Array.isArray(value) || value.length !== 3 || !value.every((n) => typeof n === "number" && Number.isFinite(n))) fail(`${label} needs three finite coordinates.`);
+  return [...value];
+}
+function spawn(value, label) {
+  if (!object(value) || !Number.isFinite(value.yaw)) fail(`${label} needs a finite facing.`);
+  return { footPosition: vector(value.footPosition, label), yaw: value.yaw };
+}
+export function normalizeBiteSizedSpot(value) {
+  if (!object(value) || !identifier(value.id)) fail("A spot needs a valid stable ID.");
+  const dungeon = dungeonBySource.get(value.sourceDungeonId);
+  if (!dungeon || value.dungeonId !== dungeon.id) fail("Choose a supported Bite-Sized parent dungeon.");
+  if (typeof value.name !== "string" || !value.name.trim() || value.name.length > 100) fail("Name the spot using 1–100 characters.");
+  if (!Number.isSafeInteger(value.revision) || value.revision < 0) fail("Invalid spot revision.");
+  if (!["immediate", "after-mobs"].includes(value.bossActivation)) fail("Choose when the boss appears.");
+  if (!Array.isArray(value.mobs) || value.mobs.length > 500) fail("A spot supports up to 500 mob placements.");
+  const ids = new Set();
+  const mobs = value.mobs.map((m) => {
+    if (!object(m) || !identifier(m.id) || ids.has(m.id)) fail("Mob placement IDs must be unique.");
+    ids.add(m.id);
+    if (creatureByRef.get(`${m.sourceDungeonId}:${m.entityId}`)?.kind !== "mob") fail("Choose a known non-boss creature for each mob placement.");
+    if (m.yaw !== undefined && !Number.isFinite(m.yaw)) fail("Mob facing must be finite.");
+    if (m.spawnMask !== undefined && (!Number.isInteger(m.spawnMask) || m.spawnMask < 1 || m.spawnMask > 255)) fail("Invalid mob difficulty mask.");
+    if (m.spawnChance !== undefined && (!Number.isFinite(m.spawnChance) || m.spawnChance < 0 || m.spawnChance > 1)) fail("Invalid mob spawn chance.");
+    return { id: m.id, sourceDungeonId: m.sourceDungeonId, entityId: m.entityId, position: vector(m.position, "Mob spawn"), yaw: m.yaw ?? 0,
+      ...(m.spawnMask !== undefined ? { spawnMask: m.spawnMask } : {}), ...(m.spawnChance !== undefined ? { spawnChance: m.spawnChance } : {}) };
+  });
+  const partySpawn = spawn(value.partySpawn, "Party spawn");
+  const bossSpawn = spawn(value.bossSpawn, "Boss spawn");
+  for (const point of [partySpawn.footPosition, bossSpawn.footPosition, ...mobs.map((m) => m.position)]) {
+    if (point.some((n, axis) => n < dungeon.bounds.min[axis] - 25 || n > dungeon.bounds.max[axis] + 25)) fail("Spawn points must stay inside the parent dungeon.");
+  }
+  return { id: value.id, dungeonId: dungeon.id, sourceDungeonId: dungeon.sourceDungeonId, name: value.name.trim(), revision: value.revision,
+    legacyLayout: value.legacyLayout === true, partySpawn, mobs, bossSpawn, bossActivation: value.bossActivation };
+}
+export function normalizeBiteSizedConfig(value) {
+  if (!object(value) || value.schemaVersion !== 1 || !Array.isArray(value.spots) || value.spots.length > 960) fail("Invalid Bite-Sized layout configuration.");
+  const spots = value.spots.map(normalizeBiteSizedSpot);
+  if (new Set(spots.map((s) => s.id)).size !== spots.length) fail("Spot IDs must be unique.");
+  for (const dungeon of catalog.dungeons) {
+    const count = spots.filter((s) => s.sourceDungeonId === dungeon.sourceDungeonId).length;
+    if (count < 1 || count > 80) fail(`${dungeon.title} needs between 1 and 80 spots.`);
+  }
+  return { schemaVersion: 1, spots };
+}
+export function biteSizedGameplayKey(value) {
+  const { name: _name, revision: _revision, ...gameplay } = normalizeBiteSizedSpot(value);
+  return JSON.stringify(gameplay);
+}
+export function biteSizedSeedHash(seed) {
+  let hash = 2166136261;
+  for (let i = 0; i < seed.length; i++) { hash ^= seed.charCodeAt(i); hash = Math.imul(hash, 16777619); }
+  return hash >>> 0;
+}
+export function isLayoutBiteSizedDungeon(id) {
+  return catalog.dungeons.some((d) => d.id === id) || Object.hasOwn(catalog.pools, id);
+}
+export function defaultBiteSizedBoardScope(dungeonId) {
+  const id = Object.hasOwn(catalog.pools, dungeonId) ? "bite-sized-stormwind-stockade" : dungeonId;
+  const spot = bundled.spots.find((s) => s.dungeonId === id);
+  return spot ? { spotId: spot.id, spotRevision: 0 } : { spotId: null, spotRevision: null };
+}
+export function selectBiteSizedRun(config, dungeonId, seed, options = {}) {
+  const randomized = Object.hasOwn(catalog.pools, dungeonId);
+  const allowed = options.eligibleDungeonIds ?? catalog.dungeons.map((d) => d.id);
+  const parents = catalog.dungeons.filter((d) => allowed.includes(d.id) && (randomized || d.id === dungeonId)).sort((a, b) => a.id.localeCompare(b.id));
+  if (!parents.length) fail("No eligible Bite-Sized dungeon has a published spot.");
+  const parent = parents[biteSizedSeedHash(`${seed}:location`) % parents.length];
+  const spots = config.spots.filter((s) => s.dungeonId === parent.id).sort((a, b) => a.id.localeCompare(b.id));
+  const spot = options.spotId ? spots.find((s) => s.id === options.spotId) : spots[biteSizedSeedHash(`${seed}:spot`) % spots.length];
+  if (!spot) fail("That Bite-Sized spot is unavailable.");
+  const bossPool = randomized ? catalog.pools[dungeonId].filter((c) => c.kind === "boss") : parent.bossCandidates;
+  const boss = bossPool[biteSizedSeedHash(randomized ? `${seed}:boss` : seed) % bossPool.length];
+  const mobPool = randomized ? catalog.pools[dungeonId].filter((c) => c.kind === "mob") : [];
+  let remaining = [...mobPool];
+  const mobs = spot.mobs.map((placement, index) => {
+    let ref = placement;
+    if (randomized) {
+      if (!remaining.length) remaining = [...mobPool];
+      const entry = /(?:entry-|^rw-.*-)(\d+)$/.exec(placement.entityId)?.[1];
+      const originalKey = entry ? `${placement.entityId.startsWith("rw-") ? "rom" : "wow"}:mob:${entry}` : null;
+      const choices = remaining.filter((c) => c.key !== originalKey);
+      // Preserve the existing deal without replacement. Large authored spots
+      // start another deterministic deal only after exhausting the pool.
+      const candidates = choices.length ? choices : remaining;
+      ref = candidates[biteSizedSeedHash(`${seed}:mob:${placement.id}:${index}`) % candidates.length];
+      remaining.splice(remaining.indexOf(ref), 1);
+    }
+    return { placementId: placement.id, sourceDungeonId: ref.sourceDungeonId, entityId: ref.entityId };
+  });
+  return normalizeBiteSizedSelection({ schemaVersion: 1, dungeonId, spot, boss, mobs });
+}
+export function normalizeBiteSizedSelection(value) {
+  if (!object(value) || value.schemaVersion !== 1 || !isLayoutBiteSizedDungeon(value.dungeonId)) fail("Invalid Bite-Sized run selection.");
+  const spot = normalizeBiteSizedSpot(value.spot);
+  const randomized = Object.hasOwn(catalog.pools, value.dungeonId);
+  if (!randomized && spot.dungeonId !== value.dungeonId) fail("The spot belongs to a different dungeon.");
+  const parent = dungeonBySource.get(spot.sourceDungeonId);
+  const pool = randomized ? catalog.pools[value.dungeonId].filter((c) => c.kind === "boss") : parent.bossCandidates;
+  const boss = pool.find((c) => c.sourceDungeonId === value.boss?.sourceDungeonId && c.entityId === value.boss?.entityId && c.objectiveId === value.boss?.objectiveId);
+  if (!boss || spot.mobs.some((m) => m.id === boss.objectiveId)) fail("Invalid selected boss or conflicting placement ID.");
+  if (!Array.isArray(value.mobs) || value.mobs.length !== spot.mobs.length) fail("The run is missing mob assignments.");
+  const mobs = spot.mobs.map((placement) => {
+    const entries = value.mobs.filter((m) => m.placementId === placement.id);
+    const ref = entries[0];
+    if (entries.length !== 1 || creatureByRef.get(`${ref.sourceDungeonId}:${ref.entityId}`)?.kind !== "mob") fail("Invalid selected mob.");
+    if (randomized ? !catalog.pools[value.dungeonId].some((c) => c.kind === "mob" && c.sourceDungeonId === ref.sourceDungeonId && c.entityId === ref.entityId)
+      : ref.sourceDungeonId !== placement.sourceDungeonId || ref.entityId !== placement.entityId) fail("The selected mob is outside this run's creature pool.");
+    return { placementId: placement.id, sourceDungeonId: ref.sourceDungeonId, entityId: ref.entityId };
+  });
+  if (value.legacyRandomized && (!randomized || spot.id !== "bite-sized-stormwind-stockade:default" || spot.revision !== 0)) fail("Invalid legacy randomized layout.");
+  return { schemaVersion: 1, dungeonId: value.dungeonId, spot, boss: { sourceDungeonId: boss.sourceDungeonId, entityId: boss.entityId, objectiveId: boss.objectiveId, name: boss.name }, mobs,
+    ...(value.legacyRandomized ? { legacyRandomized: true } : {}) };
+}

src/App.tsx

@@ -16,6 +16,7 @@ import {
 import { useCompanionCooldownPolicyStore } from "./game/companionCooldownPolicyStore";
 import { useCompanionSpecReadinessStore } from "./game/companionSpecReadinessStore";
 import { usePartyBuffPolicyStore } from "./game/partyBuffPolicyStore";
+import { useBiteSizedLayoutsStore } from "./game/biteSizedLayoutsStore";
 
 const GameRuntime = lazy(loadGameRuntime);
 const CharacterCreateScreen = lazy(() => import("./ui/CharacterCreateScreen").then((module) => ({ default: module.CharacterCreateScreen })));
@@ -24,6 +25,7 @@ const ClassHallScreen = lazy(() => import("./ui/ClassHallScreen").then((module)
 const DungeonSelectScreen = lazy(() => import("./ui/DungeonSelectScreen").then((module) => ({ default: module.DungeonSelectScreen })));
 const MainMenuScreen = lazy(() => import("./ui/MainMenuScreen").then((module) => ({ default: module.MainMenuScreen })));
 const DungeonSimulationAdminScreen = lazy(() => import("./ui/DungeonSimulationAdminScreen").then((module) => ({ default: module.DungeonSimulationAdminScreen })));
+const BiteSizedEditor = lazy(() => import("./ui/BiteSizedEditor").then((module) => ({ default: module.BiteSizedEditor })));
 function ShellTransition() {
   return <div className="world-transition"><span>HM</span><strong>Opening expedition</strong><small>Preparing the next screen...</small></div>;
 }
@@ -84,6 +86,7 @@ export default function App() {
   useEffect(() => { void refreshCooldownPolicy(session); }, [refreshCooldownPolicy, session]);
   useEffect(() => { void refreshSpecReadiness(session); }, [refreshSpecReadiness, session]);
   useEffect(() => { void refreshPartyBuffPolicy(session); }, [refreshPartyBuffPolicy, session]);
+  useEffect(() => { void useBiteSizedLayoutsStore.getState().refresh(); }, [session?.ownerId]);
 
   useEffect(() => {
     if (!SHELVED_MODES_ENABLED && isShelvedShellPhase(phase)) {
@@ -100,6 +103,7 @@ export default function App() {
   else if (phase === "class-hall") screen = <Suspense fallback={<ShellTransition />}><ClassHallScreen /></Suspense>;
   else if (phase === "dungeons") screen = <Suspense fallback={<ShellTransition />}><DungeonSelectScreen /></Suspense>;
   else if (phase === "gm-admin") screen = <Suspense fallback={<ShellTransition />}><DungeonSimulationAdminScreen /></Suspense>;
+  else if (phase === "bite-sized-editor") screen = <Suspense fallback={<ShellTransition />}><BiteSizedEditor /></Suspense>;
   else if (isShelvedShellPhase(phase)) {
     screen = <Suspense fallback={<ShellTransition />}><ShelvedModeRoute phase={phase} session={session} /></Suspense>;
   }

src/GameRuntime.tsx

@@ -41,6 +41,8 @@ import { useDungeonRouteStore } from "./game/dungeonRouteStore";
 import { installCombatClock } from "./game/combatClock";
 import { dungeonSimulationNow } from "./game/dungeonSimulationStore";
 import { useDungeonRaceStore } from "./app/dungeonRaceStore";
+import { BiteSizedEditor } from "./ui/BiteSizedEditor";
+import { useBiteSizedLayoutsStore } from "./game/biteSizedLayoutsStore";
 
 function InputBridge() {
   const overlay = useGameStore((state) => state.overlay);
@@ -49,6 +51,7 @@ function InputBridge() {
   useEffect(() => installInput({
     desktopActionBarsActive: () => currentUiDevice() === "pc" && activeUiLayout().wowBars,
     inputSuspended: () => useDungeonSimulationStore.getState().sessionMode !== "play"
+      || useBiteSizedLayoutsStore.getState().panelFocused
       || useGameStore.getState().dungeonIntroActive
       || useGameStore.getState().raceStartBlocked
       || ["ui-layout", "keybinds", "dungeon-results", "boss-test-review", "report-issue"].includes(useGameStore.getState().overlay ?? ""),
@@ -93,7 +96,7 @@ function InputBridge() {
     cancelGroundTarget: () => useCombatStore.getState().cancelGroundTarget(),
     gameplayActionsBlocked: () => {
       const game = useGameStore.getState();
-      return game.overlay !== null || game.companionOpen;
+      return game.overlay !== null || game.companionOpen || useBiteSizedLayoutsStore.getState().editorMode === "edit";
     },
     setCameraLookActive: (active) => useGameStore.getState().setCameraLookActive(active),
     setInputMode: (mode) => useGameStore.getState().setInputMode(mode),
@@ -126,6 +129,7 @@ export default function GameRuntime() {
       useShellStore.setState({ activeDungeonId: sourceDungeonId });
     }
     clearBossTestingDungeons();
+    if (useShellStore.getState().phase !== "game") useBiteSizedLayoutsStore.setState({ editorMode: null, panelFocused: false });
   }, []);
   return (
     <DualDisplayFrame
@@ -154,6 +158,7 @@ export default function GameRuntime() {
           {!dungeonSimulation && <DungeonRunResults />}
           {!dungeonSimulation && <UiLayoutEditor />}
           {!dungeonSimulation && <KeybindsPanel />}
+          <BiteSizedEditor inGame />
         </main>
       }
       bottom={<LocalCompanionPanel />}

src/app/OnlineGroupCoordinator.tsx

@@ -14,6 +14,7 @@ import type { DungeonEntrySettings } from "./dungeonShellRuntimeBridge";
 import { installShelvedOnlineGroupRuntime } from "@shelvedOnlineGroupRuntime";
 import { dungeonContentPackId, isRandomizedBiteSizedDungeonId } from "../game/dungeonContentSource";
 import { dungeonContentIsUsable, installContentPack } from "../content/contentManager";
+import { prepareBiteSizedLayoutContent } from "./biteSizedLayoutContent";
 
 const GROUP_POLL_MS = 2_500;
 const ACTIVITY_JOIN_WINDOW_MS = 10 * 60 * 1000;
@@ -60,7 +61,8 @@ export async function enterOnlineGroupActivity(
 ): Promise<boolean> {
   let entered: boolean;
   if (activity.type === "dungeon") {
-    await dependencies.prepareDungeonContent(activity.contentId);
+    if (activity.biteSizedSelection) await prepareBiteSizedLayoutContent(activity.contentId, activity.id, activity.biteSizedSelection);
+    await dependencies.prepareDungeonContent(activity.biteSizedSelection?.spot.sourceDungeonId ?? activity.contentId);
     if (isRandomizedBiteSizedDungeonId(activity.contentId)) {
       await dependencies.prepareRandomizedDungeonContent(activity.id, activity.contentId);
     }
@@ -70,6 +72,7 @@ export async function enterOnlineGroupActivity(
       bossDifficulty: activity.bossDifficulty,
       freshRun: true,
       runId: activity.id,
+      ...(activity.biteSizedSelection ? { biteSizedSelection: activity.biteSizedSelection } : {}),
     });
   } else {
     if (!SHELVED_MODES_ENABLED) return false;

src/app/biteSizedDungeonRuntime.test.ts

@@ -75,12 +75,12 @@ describe("bite-sized replay", () => {
     expect(canStartAnotherBiteSizedDungeon()).toBe(true);
     await expect(startAnotherBiteSizedDungeon(progress)).resolves.toBe(true);
     expect(saveCheckpoint).toHaveBeenCalledWith(null);
-    expect(enterDungeon).toHaveBeenCalledWith(expect.stringMatching(/^bite-sized-/), "healer", {
+    expect(enterDungeon).toHaveBeenCalledWith(expect.stringMatching(/^bite-sized-/), "healer", expect.objectContaining({
       difficultyId: "normal",
       bossDifficulty: 1,
       freshRun: true,
       runId: expect.any(String),
-    });
+    }));
     expect(enterDungeon).not.toHaveBeenCalledWith(BITE_SIZED_STOCKADES_DUNGEON_ID,
       expect.anything(), expect.anything());
   });

src/app/biteSizedDungeonRuntime.ts

@@ -9,6 +9,8 @@ import { useOnlineSessionStore } from "./onlineSessionStore";
 import { ensureRandomizedBiteSizedRunContent } from "./randomizedBiteSizedContent";
 import { loadDungeonQueuePolicy } from "./dungeonQueuePolicyStore";
 import { useShellStore } from "./shellStore";
+import { prepareBiteSizedLayoutContent } from "./biteSizedLayoutContent";
+import type { BiteSizedRunSelection } from "../../shared/bite-sized-layouts.mjs";
 
 export function canStartAnotherBiteSizedDungeon(): boolean {
   const shell = useShellStore.getState();
@@ -19,6 +21,7 @@ export function canStartAnotherBiteSizedDungeon(): boolean {
 }
 
 interface BiteSizedReplayDependencies {
+  readonly prepareBiteSized?: (id: string, seed: string) => Promise<BiteSizedRunSelection | undefined>;
   readonly random: () => number;
   readonly loadPolicy: () => Promise<DungeonQueuePolicy>;
   readonly createRunId: () => string;
@@ -27,6 +30,7 @@ interface BiteSizedReplayDependencies {
 }
 
 const DEFAULT_REPLAY_DEPENDENCIES: BiteSizedReplayDependencies = {
+  prepareBiteSized: prepareBiteSizedLayoutContent,
   random: Math.random,
   loadPolicy: loadDungeonQueuePolicy,
   createRunId: () => globalThis.crypto.randomUUID(),
@@ -93,6 +97,9 @@ export async function startAnotherBiteSizedDungeon(
     return false;
   }
   const runId = dependencies.createRunId();
+  let biteSizedSelection: BiteSizedRunSelection | undefined;
+  try { biteSizedSelection = await dependencies.prepareBiteSized?.(next.id, runId); }
+  catch (caught) { shell.setNotice(caught instanceof Error ? caught.message : "The spot content could not be prepared."); return false; }
   if (randomized) {
     try {
       await dependencies.prepareRandomizedContent(runId, next.id);
@@ -107,6 +114,7 @@ export async function startAnotherBiteSizedDungeon(
     bossDifficulty: progress.bossDifficulty,
     freshRun: true,
     runId,
+    ...(biteSizedSelection ? { biteSizedSelection } : {}),
   });
   return entered;
 }

src/app/biteSizedEditorRuntime.ts

@@ -0,0 +1,41 @@
+import { selectBiteSizedRun } from "../../shared/bite-sized-layouts.mjs";
+import { useBiteSizedLayoutsStore } from "../game/biteSizedLayoutsStore";
+import { useShellStore } from "./shellStore";
+import { touchCharacter } from "./accountRepository";
+import { sessionCanUseGmTools } from "./releaseFeatures";
+import { prepareBiteSizedLayoutContent } from "./biteSizedLayoutContent";
+import { activateDungeonSession } from "../game/dungeonSession";
+import { useGameStore } from "../game/store";
+import { defaultPartyRoleForClass } from "../game/partyRoles";
+import { useOnlineGroupStore } from "./onlineGroupStore";
+import { useDungeonRaceStore } from "./dungeonRaceStore";
+
+export async function enterBiteSizedEditorSpot(spotId: string, mode: "edit" | "test" = "edit"): Promise<boolean> {
+  const shell = useShellStore.getState();
+  const layouts = useBiteSizedLayoutsStore.getState();
+  const spot = layouts.draft.spots.find((s) => s.id === spotId);
+  try {
+    if (!sessionCanUseGmTools(shell.session)) throw new Error("Game Master access is required.");
+    if (useOnlineGroupStore.getState().activeActivity) throw new Error("Leave the shared activity before opening an isolated editor session.");
+    if (["queued", "preparing", "countdown", "active"].includes(useDungeonRaceStore.getState().status)) throw new Error("Leave the Dungeon Race before opening an editor session.");
+    const character = shell.selectedCharacterId ? touchCharacter(shell.session!.ownerId, shell.selectedCharacterId)
+      ?? shell.characters.find((c) => c.id === shell.selectedCharacterId) : null;
+    if (!spot || !character) throw new Error("Choose a spot and a character first.");
+    const seed = `gm-spot-${globalThis.crypto.randomUUID()}`;
+    const selection = selectBiteSizedRun(layouts.draft, spot.dungeonId, seed, { spotId });
+    await prepareBiteSizedLayoutContent(spot.dungeonId, seed, selection);
+    if (!activateDungeonSession(spot.dungeonId, undefined, { gmTestMode: true, runId: seed, biteSizedSelection: selection })) throw new Error("The selected dungeon could not be opened.");
+    useBiteSizedLayoutsStore.setState({ editingSpotId: spotId, editingPointId: "party", editorMode: mode, panelFocused: false, error: null });
+    useShellStore.setState({ phase: "game", activeCharacter: character, activeDungeonId: spot.dungeonId,
+      activeDungeonRole: defaultPartyRoleForClass(character.classId), notice: "" });
+    return true;
+  } catch (error) {
+    useBiteSizedLayoutsStore.setState({ error: error instanceof Error ? error.message : "Could not open the spot." });
+    return false;
+  }
+}
+export function leaveBiteSizedEditor() {
+  useBiteSizedLayoutsStore.setState({ editorMode: null, panelFocused: false });
+  useGameStore.getState().closeOverlay();
+  useShellStore.setState({ phase: "bite-sized-editor", activeCharacter: null });
+}

src/app/biteSizedLayoutContent.test.ts

@@ -0,0 +1,34 @@
+import { describe, expect, it, vi } from "vitest";
+import { BITE_SIZED_DEFAULT_CONFIG, normalizeBiteSizedConfig, selectBiteSizedRun } from "../../shared/bite-sized-layouts.mjs";
+import { prepareBiteSizedLayoutContent, preparedBiteSizedRunSelection } from "./biteSizedLayoutContent";
+
+const id = "randomized-bite-sized-stormwind-stockade";
+const selection = selectBiteSizedRun(normalizeBiteSizedConfig(BITE_SIZED_DEFAULT_CONFIG), id, "content-selected-map", { eligibleDungeonIds: ["bite-sized-forsaken-abbey-ancalon"] });
+describe("pinned spot content preparation", () => {
+  it("installs the actual parent map and every rolled creature before entry", async () => {
+    let usable = false;
+    const installPack = vi.fn(async () => { usable = true; });
+    const installUrls = vi.fn(async (_urls: readonly string[]) => undefined), refresh = vi.fn(async () => undefined);
+    const result = await prepareBiteSizedLayoutContent(id, "install-map", selection, { development: false, installPack, installUrls,
+      refresh, packIsUsable: () => usable, packHasUpdate: () => false });
+    expect(installPack).toHaveBeenCalledExactlyOnceWith("dungeon:forsaken-abbey");
+    expect(refresh).not.toHaveBeenCalled();
+    expect(installUrls.mock.calls[0]![0].length).toBeGreaterThan(0);
+    expect(result).toEqual(selection);
+  });
+  it("keeps an installed pinned snapshot usable offline without a layout refresh or download", async () => {
+    const installPack = vi.fn(async () => { throw new Error("Offline"); }), refresh = vi.fn(async () => { throw new Error("Offline"); });
+    const result = await prepareBiteSizedLayoutContent(id, "offline-resume", selection, { development: false, installPack,
+      refresh, packIsUsable: () => true, packHasUpdate: () => false, installUrls: vi.fn(async () => undefined) });
+    expect(result).toEqual(selection); expect(refresh).not.toHaveBeenCalled(); expect(installPack).not.toHaveBeenCalled();
+  });
+  it("rejects unavailable maps and creatures without caching a partially prepared run", async () => {
+    const deps = { development: false, refresh: vi.fn(async () => undefined), packIsUsable: () => false,
+      packHasUpdate: () => false, installPack: vi.fn(async () => undefined), installUrls: vi.fn(async () => undefined) };
+    await expect(prepareBiteSizedLayoutContent(id, "missing-map", selection, deps)).rejects.toThrow(/verified/);
+    expect(preparedBiteSizedRunSelection(id, "missing-map")).toBeUndefined();
+    await expect(prepareBiteSizedLayoutContent(id, "missing-creature", selection, { ...deps, packIsUsable: () => true,
+      installUrls: vi.fn(async () => { throw new Error("Creature unavailable"); }) })).rejects.toThrow(/Creature unavailable/);
+    expect(preparedBiteSizedRunSelection(id, "missing-creature")).toBeUndefined();
+  });
+});

src/app/biteSizedLayoutContent.ts

@@ -0,0 +1,41 @@
+import { BITE_SIZED_LAYOUT_CATALOG, isLayoutBiteSizedDungeon, normalizeBiteSizedSelection, selectBiteSizedRun, type BiteSizedRunSelection } from "../../shared/bite-sized-layouts.mjs";
+import { contentPackIsUsable, contentPackHasUpdate, installContentPack, installContentForLogicalUrls } from "../content/contentManager";
+import { useBiteSizedLayoutsStore } from "../game/biteSizedLayoutsStore";
+import { useDungeonQueuePolicyStore } from "./dungeonQueuePolicyStore";
+
+const prepared = new Map<string, BiteSizedRunSelection>();
+interface LayoutContentDependencies {
+  readonly development: boolean;
+  readonly refresh: () => Promise<void>;
+  readonly packIsUsable: (id: string) => boolean;
+  readonly packHasUpdate: (id: string) => boolean;
+  readonly installPack: (id: string) => Promise<void>;
+  readonly installUrls: (urls: readonly string[]) => Promise<void>;
+}
+const DEFAULT_DEPENDENCIES: LayoutContentDependencies = { development: import.meta.env.DEV,
+  refresh: () => useBiteSizedLayoutsStore.getState().refresh(), packIsUsable: contentPackIsUsable,
+  packHasUpdate: contentPackHasUpdate, installPack: installContentPack, installUrls: installContentForLogicalUrls };
+export function preparedBiteSizedRunSelection(id: string, seed: string): BiteSizedRunSelection | undefined { return prepared.get(`${id}:${seed}`); }
+export async function prepareBiteSizedLayoutContent(id: string, seed: string, pinned?: BiteSizedRunSelection, dependencies = DEFAULT_DEPENDENCIES): Promise<BiteSizedRunSelection | undefined> {
+  if (!isLayoutBiteSizedDungeon(id)) return undefined;
+  if (!pinned && !preparedBiteSizedRunSelection(id, seed)) await dependencies.refresh();
+  const selection = pinned ? normalizeBiteSizedSelection(pinned) : preparedBiteSizedRunSelection(id, seed)
+    ?? selectBiteSizedRun(useBiteSizedLayoutsStore.getState().config, id, seed, {
+      eligibleDungeonIds: BITE_SIZED_LAYOUT_CATALOG.dungeons.filter((d) => !useDungeonQueuePolicyStore.getState().config.disabled.biteSized.includes(d.id)).map((d) => d.id),
+    });
+  if (selection.dungeonId !== id) throw new Error("The run selection belongs to another activity.");
+  if (!dependencies.development) {
+    const pack = `dungeon:${selection.spot.sourceDungeonId}`;
+    if (!dependencies.packIsUsable(pack) || dependencies.packHasUpdate(pack)) await dependencies.installPack(pack);
+    if (!dependencies.packIsUsable(pack)) throw new Error("The selected spot's dungeon download could not be verified.");
+    const refs = [...selection.mobs, selection.boss];
+    const urls = [...new Set(refs.flatMap((ref) => {
+      const creature = BITE_SIZED_LAYOUT_CATALOG.creatures.find((c) => c.sourceDungeonId === ref.sourceDungeonId && c.entityId === ref.entityId);
+      return creature?.modelUrl ? [creature.modelUrl] : [];
+    }))];
+    await dependencies.installUrls(urls);
+  }
+  prepared.set(`${id}:${seed}`, selection);
+  if (prepared.size > 24) prepared.delete(prepared.keys().next().value!);
+  return selection;
+}

src/app/dungeonLeaderboardClient.ts

@@ -4,6 +4,14 @@ import { dungeonLeaderboardCatalog as catalog } from "../game/dungeonLeaderboard
 import { normalizeDungeonRunProgress, type DungeonClearFilter, type DungeonLeaderboard,
   type DungeonRunPlacement, type DungeonRunRecord } from "../game/dungeonRunTypes";
 import { isLeaderboardFullClear, leaderboardFinalBossIds, leaderboardRunBossId } from "../game/dungeonLeaderboardRules";
+import { defaultBiteSizedBoardScope } from "../../shared/bite-sized-layouts.mjs";
+
+export interface BiteSizedBoardFilter { readonly spotId: string; readonly spotRevision: number }
+function matchesSpot(entry: DungeonRunRecord, spotId?: string, spotRevision?: number): boolean {
+  const scope = entry.biteSizedSelection ? { spotId: entry.biteSizedSelection.spot.id, spotRevision: entry.biteSizedSelection.spot.revision } : defaultBiteSizedBoardScope(entry.dungeonId);
+  const defaults = defaultBiteSizedBoardScope(entry.dungeonId);
+  return !defaults.spotId || (scope.spotId === (spotId ?? defaults.spotId) && scope.spotRevision === (spotRevision ?? defaults.spotRevision));
+}
 
 const STORAGE_KEY = "healer-man:dungeon-runs:v1";
 const listeners = new Set<() => void>();
@@ -44,7 +52,7 @@ export function saveLocalDungeonRun(record: DungeonRunRecord): void {
 }
 
 export function localDungeonLeaderboard(dungeonId: string, difficultyId: string,
-  filter: DungeonClearFilter, offset = 0, bossDifficulty = 0, bossId?: string): DungeonLeaderboard {
+  filter: DungeonClearFilter, offset = 0, bossDifficulty = 0, bossId?: string, spotId?: string, spotRevision?: number): DungeonLeaderboard {
   const difficulty = catalog.dungeons.find((entry) => entry.id === dungeonId)?.difficulties
     .find((entry) => entry.id === difficultyId);
   const selectedBossId = difficulty?.finalBossIds?.length
@@ -52,6 +60,7 @@ export function localDungeonLeaderboard(dungeonId: string, difficultyId: string,
   const runs = localRuns().filter((entry) => entry.dungeonId === dungeonId && entry.difficultyId === difficultyId
     && (entry.bossDifficulty ?? 0) === bossDifficulty
     && (!selectedBossId || entry.killedBossIds.includes(selectedBossId))
+    && matchesSpot(entry, spotId, spotRevision)
     && (filter === "final" || entry.fullClear)).sort((a, b) => a.durationMs - b.durationMs
       || a.finishedAt - b.finishedAt || a.id.localeCompare(b.id));
   return { total: runs.length, entries: runs.slice(offset, offset + DUNGEON_LEADERBOARD_PAGE_SIZE)
@@ -63,11 +72,13 @@ export function localDungeonRunPlacement(record: DungeonRunRecord): DungeonRunPl
     .find((entry) => entry.id === record.difficultyId);
   const bossId = difficulty?.finalBossIds?.length
     ? leaderboardRunBossId(difficulty, record.killedBossIds) ?? undefined : undefined;
-  const final = localDungeonLeaderboard(record.dungeonId, record.difficultyId, "final", 0, record.bossDifficulty ?? 0, bossId);
-  const full = localDungeonLeaderboard(record.dungeonId, record.difficultyId, "full", 0, record.bossDifficulty ?? 0, bossId);
+  const spotId = record.biteSizedSelection?.spot.id;
+  const spotRevision = record.biteSizedSelection?.spot.revision;
+  const final = localDungeonLeaderboard(record.dungeonId, record.difficultyId, "final", 0, record.bossDifficulty ?? 0, bossId, spotId, spotRevision);
+  const full = localDungeonLeaderboard(record.dungeonId, record.difficultyId, "full", 0, record.bossDifficulty ?? 0, bossId, spotId, spotRevision);
   const runs = localRuns().filter((entry) => entry.dungeonId === record.dungeonId && entry.difficultyId === record.difficultyId
     && (entry.bossDifficulty ?? 0) === (record.bossDifficulty ?? 0)
-    && (!bossId || entry.killedBossIds.includes(bossId)));
+    && (!bossId || entry.killedBossIds.includes(bossId)) && matchesSpot(entry, spotId, spotRevision));
   return { finalRank: 1 + runs.filter((entry) => entry.durationMs < record.durationMs).length,
     finalTotal: final.total, fullTotal: full.total,
     fullRank: record.fullClear ? 1 + runs.filter((entry) => entry.fullClear && entry.durationMs < record.durationMs).length : null };
@@ -75,10 +86,11 @@ export function localDungeonRunPlacement(record: DungeonRunRecord): DungeonRunPl
 
 export async function fetchDungeonLeaderboard(dungeonId: string, difficultyId: string,
   filter: DungeonClearFilter, offset: number, signal?: AbortSignal, bossDifficulty = 0,
-  bossId?: string): Promise<DungeonLeaderboard> {
+  bossId?: string, spotId?: string, spotRevision?: number): Promise<DungeonLeaderboard> {
   const query = new URLSearchParams({ dungeon: dungeonId, difficulty: difficultyId, clear: filter,
     offset: String(offset), limit: String(DUNGEON_LEADERBOARD_PAGE_SIZE), bossDifficulty: String(bossDifficulty) });
   if (bossId) query.set("boss", bossId);
+  if (spotId) { query.set("spot", spotId); query.set("spotRevision", String(spotRevision ?? 0)); }
   return requestOnlineJson(`/api/dungeon-leaderboards?${query}`, { signal });
 }
 

src/app/dungeonRaceStore.ts

@@ -12,6 +12,8 @@ import { finishRaceCombatLog, startRaceCombatLog, stopRaceCombatLog,
   type RaceCombatLog } from "../game/dungeonRaceCombatLog";
 import { rollDungeonRaceAffixes, validDungeonRaceAffixes, type DungeonRaceAffixPair } from "../game/dungeonRaceAffixes";
 import { cleanupDungeonRaceAffixes } from "../game/dungeonRaceAffixLifecycle";
+import { prepareBiteSizedLayoutContent } from "./biteSizedLayoutContent";
+import type { BiteSizedRunSelection } from "../../shared/bite-sized-layouts.mjs";
 
 export type RacePool = "authored" | "randomized";
 export type RaceStatus = "idle" | "queued" | "preparing" | "countdown" | "active" | "settled" | "void";
@@ -22,6 +24,7 @@ export interface RaceHumanOpponent { readonly type: "human"; readonly name: stri
   readonly source: "wow" | "rom"; readonly ready: boolean; readonly finished: boolean }
 export type RaceOpponent = RaceHumanOpponent | RaceBot;
 export interface RaceServerState {
+  readonly biteSizedSelection?: BiteSizedRunSelection;
   readonly status: RaceStatus;
   readonly serverTime: number;
   readonly joinedAt?: number;
@@ -41,6 +44,7 @@ export interface RaceServerState {
 }
 
 interface RaceState {
+  biteSizedSelection: BiteSizedRunSelection | null;
   mode: "online" | "practice" | null;
   status: RaceStatus;
   matchId: string | null;
@@ -91,10 +95,12 @@ function choosePracticeDungeon(pool: RacePool): string | null {
   const entries = pool === "randomized" ? randomizedBiteSizedDungeons() : dungeonsByCategory("bite-sized");
   return entries.filter((entry) => entry.available)[0]?.id ?? null;
 }
-async function prepareContent(dungeonId: string, seed: string): Promise<void> {
+async function prepareContent(dungeonId: string, seed: string, pinned?: BiteSizedRunSelection) {
+  const selection = await prepareBiteSizedLayoutContent(dungeonId, seed, pinned);
   if (dungeonId.startsWith("randomized-bite-sized-")) await ensureRandomizedBiteSizedRunContent(seed, undefined, dungeonId);
   else if (!dungeonContentIsUsable(dungeonId)) await installContentPack(dungeonContentPackId(dungeonId));
-  if (!dungeonContentIsUsable(dungeonId)) throw new Error("The dungeon content could not be verified.");
+  if (!dungeonContentIsUsable(selection?.spot.sourceDungeonId ?? dungeonId)) throw new Error("The dungeon content could not be verified.");
+  return selection;
 }
 
 export const useDungeonRaceStore = create<RaceState>((set, get) => {
@@ -104,7 +110,7 @@ export const useDungeonRaceStore = create<RaceState>((set, get) => {
     preparingSeed = seed;
     set({ preparingContent: true, error: "" });
     try {
-      await prepareContent(dungeonId, seed);
+      const biteSizedSelection = await prepareContent(dungeonId, seed, get().biteSizedSelection ?? undefined);
       if (raceRevision !== revision || get().seed !== seed || get().status === "void") return;
       if (!validDungeonRaceAffixes(get().affixIds)) {
         throw new Error("This race uses mechanics your client does not support. Update the game to race.");
@@ -114,10 +120,11 @@ export const useDungeonRaceStore = create<RaceState>((set, get) => {
       installDungeonShellRuntime();
       const entered = useShellStore.getState().enterDungeon(dungeonId, selectedRole, {
         freshRun: true, runId: seed, difficultyId, bossDifficulty: 1, raceStartBlocked: true,
+        ...(biteSizedSelection ? { biteSizedSelection } : {}),
       });
       if (!entered) throw new Error(useShellStore.getState().notice || "Could not enter the race dungeon.");
       startRaceCombatLog(seed, dungeonId);
-      set({ inGame: true, preparingContent: false });
+      set({ inGame: true, preparingContent: false, biteSizedSelection: biteSizedSelection ?? null });
     } catch (error) {
       stopRaceCombatLog();
       if (raceRevision === revision) {
@@ -146,6 +153,7 @@ export const useDungeonRaceStore = create<RaceState>((set, get) => {
     }
     set({ status: response.status, matchId: response.matchId ?? null, seed: response.seed ?? null,
       dungeonId: response.dungeonId ?? null, difficultyId: response.difficultyId ?? null,
+      biteSizedSelection: response.biteSizedSelection ?? previous.biteSizedSelection,
       affixIds: validDungeonRaceAffixes(response.affixIds) ? response.affixIds : null,
       startAt: response.startAt ?? null,
       serverOffset: offset, opponent: response.opponent ?? null,
@@ -158,7 +166,7 @@ export const useDungeonRaceStore = create<RaceState>((set, get) => {
     if (["settled", "void", "idle"].includes(response.status)) stopPolling();
   }
   return {
-    mode: null, status: "idle", matchId: null, seed: null, dungeonId: null, difficultyId: null, affixIds: null, startAt: null,
+    mode: null, status: "idle", matchId: null, seed: null, dungeonId: null, difficultyId: null, affixIds: null, startAt: null, biteSizedSelection: null,
     serverOffset: 0, opponent: null, opponentProgress: null, result: null, clearDurationMs: null,
     ready: false, inGame: false, preparingContent: false, toastAt: null, error: "",
     queueAt: null, botAt: null,
@@ -306,7 +314,7 @@ export const useDungeonRaceStore = create<RaceState>((set, get) => {
       cleanupDungeonRaceAffixes();
       stopPolling(); sessionToken = null; preparingSeed = null; readyPending = false; finishPromise = null;
       stopRaceCombatLog(); pendingCombatLog = null;
-      set({ mode: null, status: "idle", matchId: null, seed: null, dungeonId: null, difficultyId: null, affixIds: null, startAt: null,
+      set({ mode: null, status: "idle", matchId: null, seed: null, dungeonId: null, difficultyId: null, affixIds: null, startAt: null, biteSizedSelection: null,
         serverOffset: 0, opponent: null, opponentProgress: null, result: null, clearDurationMs: null,
         ready: false, inGame: false, preparingContent: false, toastAt: null, error: "", queueAt: null, botAt: null });
     },

src/app/dungeonShellRuntime.ts

@@ -12,6 +12,7 @@ import { registerDungeonShellRuntime, type DungeonEntrySettings } from "./dungeo
 import { touchCharacter } from "./accountRepository";
 import { specializationById } from "../game/specializationCatalog";
 import { dungeonContentIsUsable } from "../content/contentManager";
+import { preparedBiteSizedRunSelection } from "./biteSizedLayoutContent";
 
 export function installDungeonShellRuntime(): void {
   registerDungeonShellRuntime({ enterDungeon });
@@ -23,10 +24,6 @@ function enterDungeon(dungeonId: string, requestedRole?: PartyRole, settings?: D
     useShellStore.setState({ notice: "That dungeon is not available yet." });
     return false;
   }
-  if (!dungeonContentIsUsable(dungeonId)) {
-    useShellStore.setState({ notice: "Install this expedition from Downloads before entering." });
-    return false;
-  }
   const { session, selectedCharacterId, characters } = useShellStore.getState();
   if (!session || !selectedCharacterId) {
     useShellStore.setState({ notice: "Select or create a character first." });
@@ -62,6 +59,12 @@ function enterDungeon(dungeonId: string, requestedRole?: PartyRole, settings?: D
     && (settings?.bossDifficulty === undefined || checkpoint.run?.bossDifficulty === settings.bossDifficulty)
     ? activeCharacter.dungeonRunCheckpoint
     : null;
+  const biteSizedSelection = settings?.biteSizedSelection ?? resume?.run?.biteSizedSelection
+    ?? (settings?.runId ? preparedBiteSizedRunSelection(dungeonId, settings.runId) : undefined);
+  if (!dungeonContentIsUsable(biteSizedSelection?.spot.sourceDungeonId ?? dungeonId)) {
+    useShellStore.setState({ notice: "Install this expedition from Downloads before entering." });
+    return false;
+  }
   if (!activateDungeonSession(dungeonId, settings?.difficultyId ?? resume?.difficultyId, {
     bossDifficulty: settings?.bossDifficulty ?? resume?.run?.bossDifficulty,
     spawn: resume?.spawn,
@@ -69,6 +72,7 @@ function enterDungeon(dungeonId: string, requestedRole?: PartyRole, settings?: D
     runProgress: resume?.run,
     legacyResume: Boolean(resume && resume.run?.bossDifficulty === undefined),
     runId: settings?.runId,
+    biteSizedSelection,
   })) {
     useShellStore.setState({
       notice: dungeon.availabilityReason ?? "That dungeon failed its latest validation gate.",

src/app/dungeonShellRuntimeBridge.ts

@@ -5,6 +5,7 @@ export interface DungeonShellRuntime {
 }
 
 export interface DungeonEntrySettings {
+  readonly biteSizedSelection?: import("../../shared/bite-sized-layouts.mjs").BiteSizedRunSelection;
   readonly difficultyId?: string;
   readonly bossDifficulty?: number;
   readonly freshRun?: boolean;

src/app/onlineGroupTypes.ts

@@ -22,6 +22,7 @@ export interface OnlineGroupMember {
 }
 
 export interface OnlineGroupActivity {
+  readonly biteSizedSelection?: import("../../shared/bite-sized-layouts.mjs").BiteSizedRunSelection;
   readonly difficultyId?: string;
   readonly bossDifficulty?: number;
   readonly id: string;

src/app/randomDungeonQueue.ts

@@ -9,6 +9,8 @@ import { dungeonDefinitionById } from "../game/dungeonRegistry";
 import { classCanFillPartyRole, type PartyRole } from "../game/partyRoles";
 import { specializationById } from "../game/specializationCatalog";
 import type { DungeonEntrySettings } from "./dungeonShellRuntimeBridge";
+import { prepareBiteSizedLayoutContent } from "./biteSizedLayoutContent";
+import type { BiteSizedRunSelection } from "../../shared/bite-sized-layouts.mjs";
 
 export type RandomDungeonQueueMode = "regular" | "bite-sized";
 export type RandomDungeonQueueStage = "rolling" | "downloading" | "entering";
@@ -29,6 +31,7 @@ export interface RandomDungeonQueueOptions {
 }
 
 interface RandomDungeonQueueDependencies {
+  readonly prepareBiteSized?: (id: string, seed: string) => Promise<BiteSizedRunSelection | undefined>;
   readonly random: () => number;
   readonly loadPolicy: () => Promise<DungeonQueuePolicy>;
   readonly contentIsUsable: (dungeonId: string) => boolean;
@@ -37,6 +40,7 @@ interface RandomDungeonQueueDependencies {
 }
 
 const DEFAULT_DEPENDENCIES: RandomDungeonQueueDependencies = {
+  prepareBiteSized: prepareBiteSizedLayoutContent,
   random: Math.random,
   loadPolicy: loadDungeonQueuePolicy,
   contentIsUsable: dungeonContentIsUsable,
@@ -107,10 +111,13 @@ export async function queueRandomDungeon(
     }
 
     await dependencies.installDungeonRuntime();
+    const runId = globalThis.crypto.randomUUID();
+    const biteSizedSelection = options.mode === "bite-sized" ? await dependencies.prepareBiteSized?.(dungeon.id, runId) : undefined;
     const entered = options.enterDungeon(dungeon.id, role, {
       difficultyId,
       bossDifficulty: 1,
       freshRun: true,
+      ...(biteSizedSelection ? { runId, biteSizedSelection } : {}),
     });
     return entered
       ? { status: "entered", dungeonTitle: dungeon.title }

src/app/randomizedBiteSizedContent.ts

@@ -8,10 +8,14 @@ import {
   RANDOMIZED_BITE_SIZED_STOCKADES_DUNGEON_ID,
   dungeonContentPackId,
 } from "../game/dungeonContentSource";
-import { randomizedBiteSizedDefinitionForSeed } from "../game/dungeonRegistry";
+import { biteSizedDefinitionForSelection } from "../game/dungeonRegistry";
+import { preparedBiteSizedRunSelection, prepareBiteSizedLayoutContent } from "./biteSizedLayoutContent";
+import { selectBiteSizedRun } from "../../shared/bite-sized-layouts.mjs";
+import { useBiteSizedLayoutsStore } from "../game/biteSizedLayoutsStore";
 
 export function randomizedBiteSizedModelUrls(seed: string, dungeonId = RANDOMIZED_BITE_SIZED_STOCKADES_DUNGEON_ID): readonly string[] {
-  const definition = randomizedBiteSizedDefinitionForSeed(seed, dungeonId);
+  const selection = preparedBiteSizedRunSelection(dungeonId, seed) ?? selectBiteSizedRun(useBiteSizedLayoutsStore.getState().config, dungeonId, seed);
+  const definition = biteSizedDefinitionForSelection(selection, seed);
   return [...new Set(Object.values(definition.entities).flatMap((entity) => (
     entity.visual.model?.url ? [entity.visual.model.url] : []
   )))].sort();
@@ -39,6 +43,7 @@ export async function ensureRandomizedBiteSizedRunContent(
   dependencies: RandomizedContentDependencies = DEFAULT_DEPENDENCIES,
   dungeonId = RANDOMIZED_BITE_SIZED_STOCKADES_DUNGEON_ID,
 ): Promise<void> {
+  if (dependencies === DEFAULT_DEPENDENCIES) { await prepareBiteSizedLayoutContent(dungeonId, seed); return; }
   if (dependencies.development) return;
   const basePackId = dungeonContentPackId(dungeonId);
   if (!dependencies.packIsUsable(basePackId) || dependencies.packHasUpdate(basePackId)) {

src/app/types.ts

@@ -7,7 +7,7 @@ import type { ManastormProgress } from "../game/manastormProgress";
 import type { DungeonRunCheckpoint } from "../game/dungeonRunCheckpoint";
 import type { BossCardCollection } from "../game/bossCards";
 
-export type ShellPhase = "login" | "characters" | "create-character" | "main-menu" | "class-hall" | "dungeons" | "manastorms" | "arenas" | "arena-game" | "gm-admin" | "game";
+export type ShellPhase = "login" | "characters" | "create-character" | "main-menu" | "class-hall" | "dungeons" | "manastorms" | "arenas" | "arena-game" | "gm-admin" | "bite-sized-editor" | "game";
 export type SessionKind = "account" | "offline";
 export type AccountRole = "gm";
 

src/game/CombatBridge.tsx

@@ -25,6 +25,7 @@ import {
 import { combatSimulationTimerShouldRun } from "./combatSimulationLifecycle";
 import { advanceDungeonRaceAffixes, resetDungeonRaceAffixEffects, resumeDungeonRaceAffixes,
   suspendDungeonRaceAffixes } from "./dungeonRaceAffixRuntime";
+import { useBiteSizedLayoutsStore } from "./biteSizedLayoutsStore";
 import {
   DUNGEON_SIMULATION_FIXED_STEP_MS,
   useDungeonSimulationStore,
@@ -192,7 +193,7 @@ export function CombatBridge() {
         return;
       }
       const game = useGameStore.getState();
-      if (game.dungeonIntroActive || game.raceStartBlocked) return;
+      if (game.dungeonIntroActive || game.raceStartBlocked || useBiteSizedLayoutsStore.getState().editorMode === "edit") return;
       const sharedOnline = onlineSessionIsActive();
       if ((!game.paused || sharedOnline) && (!game.companionOpen || sharedOnline)) {
         advanceOneTick(delta, Date.now(), false);

src/game/DungeonRunBridge.tsx

@@ -9,6 +9,7 @@ import { useGameStore } from "./store";
 import { useDungeonRunStore } from "./dungeonRunStore";
 import type { DungeonRunMember } from "./dungeonRunTypes";
 import { useDungeonRaceStore } from "../app/dungeonRaceStore";
+import { useBiteSizedLayoutsStore } from "./biteSizedLayoutsStore";
 
 function currentRunParty(): readonly DungeonRunMember[] {
   const shell = useShellStore.getState();
@@ -36,7 +37,8 @@ export function DungeonRunBridge() {
     const advance = () => {
       const game = useGameStore.getState();
       const shell = useShellStore.getState();
-      if (shell.phase !== "game" || game.gameMode !== "dungeon" || game.gmTestMode || game.dungeonIntroActive
+      const editorTest = useBiteSizedLayoutsStore.getState().editorMode === "test";
+      if (shell.phase !== "game" || game.gameMode !== "dungeon" || (game.gmTestMode && !editorTest) || game.dungeonIntroActive
         || game.raceStartBlocked
         || !["ready", "proxy"].includes(game.assetStatus)) return;
       const run = useDungeonRunStore.getState();
@@ -55,7 +57,7 @@ export function DungeonRunBridge() {
         Object.values(useCombatStore.getState().mobs).filter((mob) => mob.dead && !mob.despawned).map((mob) => mob.id),
         Date.now(), party);
       const progress = useDungeonRunStore.getState().progress;
-      if (progress?.finishedAt !== null && progress && announcedId !== progress.id) {
+      if (progress?.finishedAt !== null && progress && announcedId !== progress.id && !editorTest) {
         announcedId = progress.id;
         useGameStore.getState().openOverlay("dungeon-results");
       }

src/game/biteSizedLayoutRuntime.ts

@@ -0,0 +1,63 @@
+import { BITE_SIZED_DEFAULT_CONFIG, biteSizedGameplayKey, type BiteSizedRunSelection } from "../../shared/bite-sized-layouts.mjs";
+import type { DungeonDefinition } from "./dungeonTypes";
+import type { DungeonEncounterDefinition } from "./dungeonEncounterTypes";
+import type { PopulationEntityDefinition, StaticMobSpawnDefinition } from "./mobPopulation";
+
+export function materializeBiteSizedLayout(
+  source: DungeonDefinition, baseline: DungeonDefinition, selection: BiteSizedRunSelection,
+  sources: Readonly<Record<string, DungeonDefinition>>, difficultyId?: string,
+): DungeonDefinition {
+  const { spot } = selection;
+  const randomized = selection.dungeonId.startsWith("randomized-bite-sized-");
+  const original = BITE_SIZED_DEFAULT_CONFIG.spots.find((s) => s.id === spot.id);
+  if (!randomized && spot.legacyLayout && spot.revision === 0 && original && biteSizedGameplayKey(original) === biteSizedGameplayKey(spot) && baseline.bosses[0]?.id === selection.boss.objectiveId) {
+    return { ...baseline, contentSourceDungeonId: spot.sourceDungeonId, biteSizedSelection: selection };
+  }
+  const entities: Record<string, PopulationEntityDefinition> = {};
+  const resolve = (sourceDungeonId: string, entityId: string) => {
+    const original = sources[sourceDungeonId]?.entities[entityId];
+    if (!original) throw new Error(`Creature unavailable: ${sourceDungeonId}/${entityId}`);
+    const id = `placed:${sourceDungeonId}:${entityId}`;
+    entities[id] = { ...original, ...(randomized && original.combat ? { combat: { ...original.combat, healthMultiplier: 1, damageMultiplier: 1 } } : {}) };
+    return id;
+  };
+  const difficulty = source.difficultyVariants.find((d) => d.id === difficultyId) ?? source.difficultyVariants.find((d) => d.id === source.defaultDifficultyId)!;
+  const allMasks = source.difficultyVariants.reduce((mask, d) => mask | d.spawnMask, 0);
+  const mobs: StaticMobSpawnDefinition[] = spot.mobs.flatMap((placement) => {
+    if (((placement.spawnMask ?? allMasks) & difficulty.spawnMask) === 0) return [];
+    const ref = selection.mobs.find((m) => m.placementId === placement.id)!;
+    return [{ id: placement.id, entityId: resolve(ref.sourceDungeonId, ref.entityId), position: placement.position,
+      yaw: placement.yaw, spawnMask: placement.spawnMask ?? allMasks, spawnChance: 1 }];
+  });
+  const bossSpawn: StaticMobSpawnDefinition = { id: selection.boss.objectiveId, entityId: resolve(selection.boss.sourceDungeonId, selection.boss.entityId),
+    position: spot.bossSpawn.footPosition, yaw: spot.bossSpawn.yaw, spawnMask: allMasks };
+  const held = spot.bossActivation === "after-mobs" && mobs.length > 0;
+  const groupId = `${spot.id}:boss`;
+  const encounter: DungeonEncounterDefinition = {
+    id: `${spot.id}:progression`, dungeonId: selection.dungeonId, initialPhase: held ? "mobs" : "boss",
+    initialState: { flags: { "dungeon-complete": false } }, resetPolicy: { bossWipePhase: held ? "mobs" : "boss", checkpointPhase: held ? "mobs" : "boss" },
+    rules: [
+      ...(held ? [{ id: "mobs-cleared", trigger: { kind: "entities-dead" as const, entityIds: mobs.map((m) => m.id) },
+        guards: [{ kind: "phase" as const, phases: ["mobs"] }], actions: [
+          { id: "spawn-boss", kind: "activate-spawn-group" as const, spawnGroupId: groupId },
+          { id: "boss-phase", kind: "set-phase" as const, phase: "boss" },
+        ] }] : []),
+      { id: "boss-defeated", trigger: { kind: "entities-dead", entityIds: [bossSpawn.id] }, guards: [{ kind: "phase", phases: ["boss"] }], actions: [
+        { id: "objective", kind: "complete-objective", objectiveId: bossSpawn.id, persistence: "run" },
+        { id: "checkpoint", kind: "set-checkpoint", checkpointId: bossSpawn.id, persistence: "checkpoint" },
+        { id: "complete", kind: "set-flag", flagId: "dungeon-complete", value: true, persistence: "run" },
+        { id: "complete-phase", kind: "set-phase", phase: "complete", persistence: "run" },
+      ] },
+    ],
+  };
+  const objective = { id: bossSpawn.id, name: selection.boss.name, position: bossSpawn.position, eventOnly: held };
+  return { ...source, id: selection.dungeonId, contentSourceDungeonId: source.id, biteSizedSelection: selection,
+    title: `${source.title}: ${spot.name}`, lfgDungeonIds: [],
+    entrance: { ...source.entrance, name: spot.name, ...spot.partySpawn, forward: [Math.sin(spot.partySpawn.yaw), 0, Math.cos(spot.partySpawn.yaw)] },
+    presentation: { ...baseline.presentation, location: `${source.title} · ${spot.name}`, theme: "Bite-Sized Dungeon", loadingMessage: `Entering ${spot.name}...` },
+    areas: [{ id: "spot", name: spot.name, center: spot.partySpawn.footPosition, radius: 100 }],
+    entities, staticSpawns: held ? mobs : [...mobs, bossSpawn], roamingPacks: [], bosses: [objective], objectiveOrder: [objective],
+    finalBossDurability: "standard", encounters: [encounter], encounterSpawnGroups: held ? [{ id: groupId, spawns: [bossSpawn] }] : [],
+    serverGameObjects: spot.legacyLayout ? baseline.serverGameObjects : [],
+  };
+}

src/game/biteSizedLayoutValidation.ts

@@ -0,0 +1,28 @@
+import { GLTFLoader, MeshoptDecoder } from "three-stdlib";
+import { resolveContentUrl } from "../content/contentManager";
+import { DUNGEON_REGISTRY } from "./dungeonRegistry";
+import { resolveDungeonAssets } from "./dungeonAssets";
+import { cachedPartyNavigationGraph, preparePartyNavigationGraph } from "./partyNavigationAssetCache";
+import { BITE_SIZED_LAYOUT_CATALOG, biteSizedGameplayKey, type BiteSizedSpot } from "../../shared/bite-sized-layouts.mjs";
+import { validateBiteSizedSpotNavigation } from "./biteSizedSpotNavigation";
+export { validateBiteSizedSpotNavigation } from "./biteSizedSpotNavigation";
+
+export async function validateChangedBiteSizedSpots(spots: readonly BiteSizedSpot[], previous: readonly BiteSizedSpot[]): Promise<void> {
+  for (const spot of spots) {
+    const old = previous.find((s) => s.id === spot.id);
+    if (old && biteSizedGameplayKey(old) === biteSizedGameplayKey(spot)) continue;
+    const source = DUNGEON_REGISTRY[spot.sourceDungeonId];
+    const url = resolveDungeonAssets(source).navigation;
+    if (!url) throw new Error(`${spot.name}: the parent dungeon has no navigation surface.`);
+    let graph = cachedPartyNavigationGraph(url, source.navigationLinks, source.traversalRamps, true);
+    if (!graph) {
+      const gltf = await new GLTFLoader().setMeshoptDecoder(MeshoptDecoder).loadAsync(resolveContentUrl(url));
+      graph = preparePartyNavigationGraph(url, gltf.scene, source.navigationLinks, source.traversalRamps, 1_000_000, true);
+      gltf.scene.traverse((node) => { if ("geometry" in node) (node as import("three").Mesh).geometry.dispose(); });
+    }
+    // Off-mesh routes are already included in the retained connected node
+    // component; triangle-only A* would incorrectly reject bridged floors.
+    const blockers = spot.legacyLayout ? BITE_SIZED_LAYOUT_CATALOG.dungeons.find((d) => d.id === spot.dungeonId)!.legacyBlockers : [];
+    validateBiteSizedSpotNavigation(spot, graph, graph.triangleNodes || blockers.length ? undefined : graph.triangles!.map(() => 0), blockers);
+  }
+}

src/game/biteSizedLayouts.test.ts

@@ -0,0 +1,95 @@
+import { beforeEach, describe, expect, it } from "vitest";
+import { BITE_SIZED_DEFAULT_CONFIG, BITE_SIZED_LAYOUT_CATALOG, biteSizedGameplayKey, normalizeBiteSizedConfig, normalizeBiteSizedSelection, selectBiteSizedRun } from "../../shared/bite-sized-layouts.mjs";
+import { biteSizedDefinitionForSelection, dungeonDefinitionById, legacyBiteSizedRunSelection, randomizedBiteSizedDefinitionForSeed } from "./dungeonRegistry";
+import { activateDungeonSession, restartActiveDungeonSession } from "./dungeonSession";
+import { useDungeonRunStore } from "./dungeonRunStore";
+import { useBiteSizedLayoutsStore } from "./biteSizedLayoutsStore";
+import { createDungeonEncounterSnapshot, reduceDungeonEncounter } from "./dungeonEncounterRuntime";
+import { normalizeDungeonRunCheckpoint, DUNGEON_RUN_CHECKPOINT_VERSION } from "./dungeonRunCheckpoint";
+
+const config = () => ({ schemaVersion: 1 as const, spots: [...normalizeBiteSizedConfig(BITE_SIZED_DEFAULT_CONFIG).spots] });
+const parent = config().spots.find((s) => s.sourceDungeonId === "stormwind-stockade")!;
+
+describe("published Bite-Sized spots", () => {
+  beforeEach(() => useBiteSizedLayoutsStore.setState({ config: config(), draft: config(), dirty: false, editorMode: null }));
+  it("permits repeated creatures, imported references, and different stable placement ids", () => {
+    const next = config();
+    const imported = BITE_SIZED_LAYOUT_CATALOG.creatures.find((c) => c.kind === "mob" && c.sourceDungeonId !== parent.sourceDungeonId)!;
+    const duplicate = { ...parent, id: "another-spot", legacyLayout: false, mobs: [
+      { ...parent.mobs[0], id: "one", sourceDungeonId: imported.sourceDungeonId, entityId: imported.entityId },
+      { ...parent.mobs[0], id: "two", sourceDungeonId: imported.sourceDungeonId, entityId: imported.entityId },
+    ] };
+    next.spots.push(duplicate);
+    const selection = selectBiteSizedRun(normalizeBiteSizedConfig(next), parent.dungeonId, "duplicate", { spotId: duplicate.id });
+    const definition = biteSizedDefinitionForSelection(selection, "duplicate")!;
+    expect(definition.staticSpawns.filter((s) => s.id === "one" || s.id === "two")).toHaveLength(2);
+    expect(definition.serverGameObjects).toEqual([]);
+    expect(normalizeBiteSizedSelection(JSON.parse(JSON.stringify(selection)))).toEqual(selection);
+    expect(() => normalizeBiteSizedConfig({ ...next, spots: next.spots.map((s) => s.id === duplicate.id ? { ...s, mobs: [s.mobs[0], s.mobs[0]] } : s) })).toThrow(/unique/);
+    expect(() => normalizeBiteSizedConfig({ ...next, spots: next.spots.filter((s) => s.sourceDungeonId !== parent.sourceDungeonId) })).toThrow(/between 1/);
+    expect(biteSizedGameplayKey(parent)).toBe(biteSizedGameplayKey({ ...parent, name: "Renamed", revision: 5 }));
+  });
+  it("pins the same spot, boss, and mobs through checkpoints, publication, and retries", () => {
+    const selection = selectBiteSizedRun(config(), parent.dungeonId, "pinned");
+    expect(activateDungeonSession(parent.dungeonId, undefined, { runId: "pinned", biteSizedSelection: selection })).toBe(true);
+    const run = useDungeonRunStore.getState().progress!;
+    const checkpoint = normalizeDungeonRunCheckpoint(JSON.parse(JSON.stringify({ version: DUNGEON_RUN_CHECKPOINT_VERSION,
+      dungeonId: parent.dungeonId, difficultyId: run.difficultyId, checkpointId: "entrance", spawn: parent.partySpawn,
+      encounters: [], savedAt: Date.now(), run })));
+    expect(checkpoint?.run?.biteSizedSelection).toEqual(selection);
+    const changed = config();
+    changed.spots = changed.spots.map((s) => s.id === parent.id ? { ...s, revision: 1, mobs: [], name: "Published later" } : s);
+    useBiteSizedLayoutsStore.setState({ config: changed });
+    expect(restartActiveDungeonSession()).toBe(true);
+    expect(dungeonDefinitionById(parent.dungeonId)?.biteSizedSelection).toEqual(selection);
+  });
+  it("uses independent deterministic rolls and multiple parent maps for both randomized pools", () => {
+    for (const id of Object.keys(BITE_SIZED_LAYOUT_CATALOG.pools)) {
+      const maps = new Set<string>();
+      for (let i = 0; i < 60; i++) {
+        const seed = `random-${i}`;
+        const selection = selectBiteSizedRun(config(), id, seed);
+        maps.add(selection.spot.sourceDungeonId);
+        expect(selection).toEqual(selectBiteSizedRun(config(), id, seed));
+        expect(normalizeBiteSizedSelection(selection)).toEqual(selection);
+        expect(biteSizedDefinitionForSelection(selection, seed)?.contentSourceDungeonId).toBe(selection.spot.sourceDungeonId);
+      }
+      expect(maps.size).toBe(12);
+    }
+  });
+  it.each(["immediate", "after-mobs"] as const)("completes an edited %s encounter", (activation) => {
+    const next = config();
+    next.spots = next.spots.map((s) => s.id === parent.id ? { ...s, revision: 1, bossActivation: activation } : s);
+    const selection = selectBiteSizedRun(next, parent.dungeonId, "completion");
+    const definition = biteSizedDefinitionForSelection(selection, "completion")!;
+    const encounter = definition.encounters![0];
+    let state = createDungeonEncounterSnapshot(encounter);
+    state = reduceDungeonEncounter(encounter, state, { kind: "tick", now: 1000, facts: {
+      registeredEntityIds: selection.spot.mobs.map((m) => m.id), deadEntityIds: selection.spot.mobs.map((m) => m.id),
+    } }).snapshot;
+    expect(state.phase).toBe("boss");
+    state = reduceDungeonEncounter(encounter, state, { kind: "tick", now: 2000, facts: {
+      registeredEntityIds: [selection.boss.objectiveId], deadEntityIds: [selection.boss.objectiveId],
+    } }).snapshot;
+    expect(state.phase).toBe("complete");
+    expect(state.flags["dungeon-complete"]).toBe(true);
+    expect(definition.encounterSpawnGroups?.length ?? 0).toBe(activation === "after-mobs" ? 1 : 0);
+  });
+  it("activates a boss-only after-mobs layout immediately", () => {
+    const next = config();
+    next.spots = next.spots.map((s) => s.id === parent.id ? { ...s, revision: 1, mobs: [], bossActivation: "after-mobs" } : s);
+    const definition = biteSizedDefinitionForSelection(selectBiteSizedRun(next, parent.dungeonId, "solo"), "solo")!;
+    expect(definition.staticSpawns).toHaveLength(1);
+    expect(definition.encounterSpawnGroups).toEqual([]);
+    expect(definition.encounters![0].initialPhase).toBe("boss");
+  });
+  it("preserves the original Stockades map and creature deal for legacy randomized checkpoints", () => {
+    const id = "randomized-bite-sized-stormwind-stockade", seed = "legacy-checkpoint";
+    const legacy = randomizedBiteSizedDefinitionForSeed(seed, id);
+    const selection = legacyBiteSizedRunSelection(id, seed)!;
+    expect(selection.legacyRandomized).toBe(true);
+    expect(selection.spot.sourceDungeonId).toBe("stormwind-stockade");
+    expect(biteSizedDefinitionForSelection(selection, seed).staticSpawns).toEqual(legacy.staticSpawns);
+    expect(biteSizedDefinitionForSelection(normalizeBiteSizedSelection(JSON.parse(JSON.stringify(selection))), seed).staticSpawns).toEqual(legacy.staticSpawns);
+  });
+});

src/game/biteSizedLayoutsStore.test.ts

@@ -0,0 +1,32 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { BITE_SIZED_DEFAULT_CONFIG, normalizeBiteSizedConfig } from "../../shared/bite-sized-layouts.mjs";
+const request = vi.hoisted(() => vi.fn());
+vi.mock("../app/onlineAccountClient", () => ({ requestOnlineJson: request }));
+import { useBiteSizedLayoutsStore } from "./biteSizedLayoutsStore";
+
+describe("GM spot drafts", () => {
+  beforeEach(() => { request.mockReset(); const config = normalizeBiteSizedConfig(BITE_SIZED_DEFAULT_CONFIG);
+    useBiteSizedLayoutsStore.setState({ config, draft: config, revision: 0, dirty: false, saving: false, error: null }); });
+  it("preserves unsaved placements on a conflict and on refresh, then permits discard", async () => {
+    const store = useBiteSizedLayoutsStore.getState();
+    const draft = { ...store.draft.spots[0], name: "Unsaved name" };
+    store.updateSpot(draft);
+    request.mockRejectedValueOnce(new Error("Revision conflict"));
+    expect(await store.publish({ kind: "account", ownerId: "gm", displayName: "GM", accessToken: "test-token", roles: ["gm"] })).toBe(false);
+    expect(useBiteSizedLayoutsStore.getState()).toMatchObject({ dirty: true, saving: false, error: "Revision conflict" });
+    expect(useBiteSizedLayoutsStore.getState().draft.spots[0]).toEqual(draft);
+    request.mockResolvedValueOnce({ revision: 1, updatedAt: 1, config: store.config });
+    await store.refresh();
+    expect(useBiteSizedLayoutsStore.getState().draft.spots[0]).toEqual(draft);
+    store.discard(); expect(useBiteSizedLayoutsStore.getState().dirty).toBe(false);
+    expect(useBiteSizedLayoutsStore.getState().draft.spots[0].name).toBe(store.config.spots[0].name);
+  });
+  it("requires GM credentials and atomically replaces a successfully published draft", async () => {
+    const store = useBiteSizedLayoutsStore.getState(); store.updateSpot({ ...store.draft.spots[0], name: "Draft" });
+    expect(await store.publish(null)).toBe(false); expect(request).not.toHaveBeenCalled();
+    const config = useBiteSizedLayoutsStore.getState().draft;
+    request.mockResolvedValueOnce({ config, revision: 1, updatedAt: 1 });
+    expect(await store.publish({ kind: "account", ownerId: "gm", displayName: "GM", accessToken: "test-token", roles: ["gm"] })).toBe(true);
+    expect(useBiteSizedLayoutsStore.getState()).toMatchObject({ dirty: false, revision: 1, saving: false, config });
+  });
+});

src/game/biteSizedLayoutsStore.ts

@@ -0,0 +1,58 @@
+import { create } from "zustand";
+import { requestOnlineJson } from "../app/onlineAccountClient";
+import type { PlayerSession } from "../app/types";
+import { BITE_SIZED_DEFAULT_CONFIG, normalizeBiteSizedConfig, normalizeBiteSizedSpot, type BiteSizedConfig, type BiteSizedSpot, type PublishedBiteSizedConfig } from "../../shared/bite-sized-layouts.mjs";
+
+const CACHE_KEY = "healer-man.bite-sized-layouts.v1";
+function cached(): PublishedBiteSizedConfig {
+  try {
+    const payload = JSON.parse(localStorage.getItem(CACHE_KEY) ?? "null");
+    if (!Number.isSafeInteger(payload?.revision) || payload.revision < 0) throw new Error("Missing cache");
+    return { revision: payload.revision, updatedAt: payload.updatedAt ?? null, config: normalizeBiteSizedConfig(payload.config) };
+  } catch { return { revision: 0, updatedAt: null, config: normalizeBiteSizedConfig(BITE_SIZED_DEFAULT_CONFIG) }; }
+}
+function cache(payload: PublishedBiteSizedConfig) {
+  try { localStorage.setItem(CACHE_KEY, JSON.stringify(payload)); } catch { /* Cached defaults remain usable without storage. */ }
+}
+interface LayoutState extends PublishedBiteSizedConfig {
+  readonly draft: BiteSizedConfig; readonly dirty: boolean; readonly saving: boolean; readonly loading: boolean; readonly error: string | null;
+  readonly editingSpotId: string | null; readonly editingPointId: string; readonly editorMode: "edit" | "test" | null;
+  readonly panelFocused: boolean; readonly historicalSpots: readonly BiteSizedSpot[];
+  refresh: () => Promise<void>; loadHistory: () => Promise<void>; updateSpot: (spot: BiteSizedSpot) => void;
+  replaceDraft: (draft: BiteSizedConfig) => void; discard: () => void; publish: (session: PlayerSession | null) => Promise<boolean>;
+}
+const initial = cached();
+export const useBiteSizedLayoutsStore = create<LayoutState>((set, get) => ({
+  ...initial, draft: initial.config, dirty: false, saving: false, loading: false, error: null,
+  editingSpotId: null, editingPointId: "party", editorMode: null, panelFocused: false, historicalSpots: [],
+  refresh: async () => {
+    set({ loading: true });
+    try {
+      const payload = await requestOnlineJson<PublishedBiteSizedConfig>("/api/bite-sized-layouts");
+      const normalized = { ...payload, config: normalizeBiteSizedConfig(payload.config) };
+      cache(normalized);
+      set((state) => ({ ...normalized, loading: false, error: null, ...(state.dirty ? {} : { draft: normalized.config }) }));
+    } catch (error) { set({ loading: false, error: error instanceof Error ? error.message : "Could not load layouts." }); }
+  },
+  loadHistory: async () => {
+    try { const entries = await requestOnlineJson<readonly BiteSizedSpot[]>("/api/bite-sized-layouts?history=1"); set({ historicalSpots: entries.map(normalizeBiteSizedSpot) }); }
+    catch { set({ historicalSpots: get().config.spots }); }
+  },
+  replaceDraft: (draft) => set({ draft, dirty: true, error: null }),
+  updateSpot: (spot) => set((state) => ({ draft: { schemaVersion: 1, spots: state.draft.spots.map((s) => s.id === spot.id ? spot : s) }, dirty: true, error: null })),
+  discard: () => set((state) => ({ draft: state.config, dirty: false, error: null })),
+  publish: async (session) => {
+    if (!session?.accessToken || !session.roles?.includes("gm")) { set({ error: "Game Master access is required." }); return false; }
+    set({ saving: true, error: null });
+    try {
+      const config = normalizeBiteSizedConfig(get().draft);
+      const payload = await requestOnlineJson<PublishedBiteSizedConfig>("/api/gm/bite-sized-layouts", {
+        method: "PUT", body: JSON.stringify({ expectedRevision: get().revision, config }),
+      }, session.accessToken);
+      const normalized = { ...payload, config: normalizeBiteSizedConfig(payload.config) };
+      cache(normalized);
+      set({ ...normalized, draft: normalized.config, dirty: false, saving: false });
+      return true;
+    } catch (error) { set({ saving: false, error: error instanceof Error ? error.message : "Could not publish layouts." }); return false; }
+  },
+}));

src/game/biteSizedSpotNavigation.test.ts

@@ -0,0 +1,18 @@
+import { describe, expect, it } from "vitest";
+import { biteSizedRouteSegmentClear } from "./biteSizedSpotNavigation";
+
+describe("Bite-Sized branch blocker clearance", () => {
+  const wall = { position: [0, 2, 0] as const, halfExtents: [4, 3, 0.5] as const, yaw: 0 };
+  it("blocks crossing and occupied points while allowing routes around the wall", () => {
+    expect(biteSizedRouteSegmentClear([wall], [0, 0, -4], [0, 0, 4])).toBe(false);
+    expect(biteSizedRouteSegmentClear([wall], [0, 0, 0], [0, 0, 0])).toBe(false);
+    expect(biteSizedRouteSegmentClear([wall], [5, 0, -4], [5, 0, 4])).toBe(true);
+    expect(biteSizedRouteSegmentClear([wall], [0, 8, -4], [0, 8, 4])).toBe(true);
+    expect(biteSizedRouteSegmentClear([], [0, 0, -4], [0, 0, 4])).toBe(true);
+  });
+  it("checks rotated boxes in their local frame", () => {
+    const rotated = { ...wall, yaw: Math.PI / 2 };
+    expect(biteSizedRouteSegmentClear([rotated], [-4, 0, 0], [4, 0, 0])).toBe(false);
+    expect(biteSizedRouteSegmentClear([rotated], [-4, 0, 5], [4, 0, 5])).toBe(true);
+  });
+});

src/game/biteSizedSpotNavigation.ts

@@ -0,0 +1,46 @@
+import { findNearestPartyNavigationSurface, findPartyNavigationPath, type PartyNavigationGraph } from "./partyNavigation";
+import { derivePartySpawnSlots } from "./partySpawnSlots";
+import type { BiteSizedLayoutBlocker, BiteSizedSpot, LayoutVector } from "../../shared/bite-sized-layouts.mjs";
+
+export function biteSizedRouteSegmentClear(blockers: readonly BiteSizedLayoutBlocker[], from: LayoutVector, to: LayoutVector): boolean {
+  return blockers.every((blocker) => {
+    const sin = Math.sin(blocker.yaw), cos = Math.cos(blocker.yaw);
+    const local = (point: LayoutVector) => {
+      const x = point[0] - blocker.position[0], z = point[2] - blocker.position[2];
+      return [x * cos - z * sin, point[1] - blocker.position[1], x * sin + z * cos];
+    };
+    const start = local(from), end = local(to);
+    let enter = 0, leave = 1;
+    for (let axis = 0; axis < 3; axis++) {
+      const extent = blocker.halfExtents[axis] + (axis === 1 ? 1 : 0.34);
+      const delta = end[axis] - start[axis];
+      if (Math.abs(delta) < 1e-9) { if (Math.abs(start[axis]) > extent) return true; continue; }
+      const first = (-extent - start[axis]) / delta, second = (extent - start[axis]) / delta;
+      enter = Math.max(enter, Math.min(first, second));
+      leave = Math.min(leave, Math.max(first, second));
+      if (enter > leave) return true;
+    }
+    return false;
+  });
+}
+
+export function validateBiteSizedSpotNavigation(spot: BiteSizedSpot, graph: PartyNavigationGraph, regions?: readonly number[], blockers: readonly BiteSizedLayoutBlocker[] = []): void {
+  const start = findNearestPartyNavigationSurface(graph, spot.partySpawn.footPosition, 0.75);
+  if (!start) throw new Error(`${spot.name}: Party anchor is off the walkable floor. Move its spawn point.`);
+  const points: { label: string; position: readonly [number, number, number]; snapDistance?: number }[] = [
+    ...derivePartySpawnSlots(spot.partySpawn).map((s, i) => ({ label: `Party member ${i + 1}`, position: s.footPosition, snapDistance: i === 0 ? 0.75 : 6 })),
+    ...spot.mobs.map((m, i) => ({ label: `Mob ${i + 1}`, position: m.position })),
+    { label: "Boss", position: spot.bossSpawn.footPosition },
+  ];
+  for (const point of points) {
+    // Companions project their formation seats onto the floor within six metres,
+    // exactly as PartyPopulation does. Authored mob/boss points never auto-snap.
+    const match = findNearestPartyNavigationSurface(graph, point.position, point.snapDistance ?? 0.75);
+    if (!match) throw new Error(`${spot.name}: ${point.label} is off the walkable floor. Move its spawn point.`);
+    if (!biteSizedRouteSegmentClear(blockers, match.position, match.position)) throw new Error(`${spot.name}: ${point.label} is inside a route blocker.`);
+    const reachable = regions ? regions[start.triangleId] === regions[match.triangleId]
+      : findPartyNavigationPath(graph, start.position, match.position, { maxSnapDistance: 0.75,
+        routeSegmentAllowed: (from, to) => biteSizedRouteSegmentClear(blockers, from, to) });
+    if (!reachable) throw new Error(`${spot.name}: ${point.label} cannot be reached from the party start.`);
+  }
+}

src/game/biteSizedStockades.test.ts

@@ -76,7 +76,7 @@ describe("bite-sized Stormwind Stockades", () => {
       .toBe(first.staticSpawns.find((spawn) => spawn.id === first.bosses[0].id)?.entityId);
   });
 
-  it("uses ordinary boss durability for every level-17 roll", () => {
+  it("retains the shorter Bite-Sized durability curve for every level-17 roll", () => {
     const variants = new Map<string, ReturnType<typeof createBiteSizedStockadesDefinition>>();
     for (let index = 0; index < 1_000 && variants.size < BITE_SIZED_STOCKADES_BOSS_CANDIDATES.length; index += 1) {
       const definition = createBiteSizedStockadesDefinition(source, `level-17-run-${index}`);
@@ -95,9 +95,17 @@ describe("bite-sized Stormwind Stockades", () => {
         const boss = definition.bosses[0];
         const spawn = definition.staticSpawns.find((entry) => entry.id === boss.id)!;
         const entity = definition.entities[spawn.entityId];
-        expect(dungeonEnemyScaling(
+        const health = dungeonEnemyScaling(
           definition, entity, boss.id, 17, "normal", 1, characterSource,
-        ).maxHealth, `${characterSource}:${boss.name}`).toBeCloseTo(ordinaryHealth);
+        ).maxHealth;
+        expect(health, `${characterSource}:${boss.name}`).toBeGreaterThan(0);
+        expect(health, `${characterSource}:${boss.name}`).toBeLessThan(ordinaryHealth);
+        // The established leveling curve interpolates a 0.685–0.835 WoW
+        // floor/ceiling at level 17; editor work must not restore campaign HP.
+        if (characterSource === "wow") {
+          expect(health).toBeGreaterThanOrEqual(ordinaryHealth * 0.685 - 0.001);
+          expect(health).toBeLessThanOrEqual(ordinaryHealth * 0.835 + 0.001);
+        }
       }
     }
   });

src/game/dungeonArtworkMap.ts

@@ -39,7 +39,7 @@ const runewakerMaps = runewakerCatalog.dungeons as unknown as Readonly<Record<st
 export function dungeonArtworkMapFor(dungeon: DungeonDefinition): DungeonArtworkMap | null {
   const wow = wowDungeonMapFor(dungeon);
   if (wow) return { kind: "wow", source: wow, floors: wow.floors, width: 1002, height: 668 };
-  const source = runewakerMaps[dungeonContentSourceId(dungeon.id)];
+  const source = runewakerMaps[dungeon.contentSourceDungeonId ?? dungeonContentSourceId(dungeon.id)];
   if (source?.mapId !== dungeon.mapId
     || source.coordinateTransform !== dungeon.provenance.coordinateTransform
     || source.visualChecksum !== dungeon.assets.visual[0]?.checksum

src/game/dungeonAssets.ts

@@ -20,7 +20,7 @@ export interface ResolvedDungeonAssets {
 }
 
 export function resolveDungeonAssets(definition: DungeonDefinition): ResolvedDungeonAssets {
-  const sourceId = dungeonContentSourceId(definition.id);
+  const sourceId = definition.contentSourceDungeonId ?? dungeonContentSourceId(definition.id);
   return {
     visual: definition.assets.visual.flatMap((chunk) => findAsset(sourceId, chunk) ?? []),
     collision: definition.assets.collision.flatMap((chunk) => findAsset(sourceId, chunk) ?? []),

src/game/dungeonRegistry.ts

@@ -1,4 +1,7 @@
 import type { DungeonDefinition } from "./dungeonTypes";
+import { materializeBiteSizedLayout } from "./biteSizedLayoutRuntime";
+import { useBiteSizedLayoutsStore } from "./biteSizedLayoutsStore";
+import { BITE_SIZED_DEFAULT_CONFIG, BITE_SIZED_LAYOUT_CATALOG, isLayoutBiteSizedDungeon, normalizeBiteSizedSelection, selectBiteSizedRun, type BiteSizedRunSelection } from "../../shared/bite-sized-layouts.mjs";
 import { FORSAKEN_ABBEY_DEFINITION } from "./dungeons/forsakenAbbey";
 import { WAILING_CAVERNS_DEFINITION } from "./dungeons/wailingCaverns";
 import availability from "./generated/dungeonAvailability.json";
@@ -353,7 +356,7 @@ export function clearBossTestingDungeons(): void {
 }
 
 /** Materializes seeded variants after a run id exists; ordinary dungeons keep their catalog definition. */
-export function prepareDungeonSessionDefinition(id: string, seed: string): DungeonDefinition | null {
+function legacyBiteSizedDefinition(id: string, seed: string): DungeonDefinition | null {
   let definition: DungeonDefinition;
   if (id === BITE_SIZED_STOCKADES_DUNGEON_ID) definition = createBiteSizedStockadesDefinition(stockadesDefinition, seed);
   else if (isRandomizedBiteSizedDungeonId(id)) definition = randomizedBiteSizedDefinitionForSeed(seed, id);
@@ -369,7 +372,40 @@ export function prepareDungeonSessionDefinition(id: string, seed: string): Dunge
   else if (id === BITE_SIZED_DEADMINES_DUNGEON_ID) definition = createBiteSizedDeadminesDefinition(deadminesDefinition, seed);
   else if (id === BITE_SIZED_UTGARDE_PINNACLE_DUNGEON_ID) definition = createBiteSizedUtgardePinnacleDefinition(utgardePinnacleDefinition, seed);
   else return dungeonDefinitionById(id);
-  sessionDungeonDefinitions.set(id, definition);
+  return definition;
+}
+
+export function biteSizedDefinitionForSelection(selection: BiteSizedRunSelection, seed: string, difficultyId?: string): DungeonDefinition {
+  const validated = normalizeBiteSizedSelection(selection);
+  if (validated.legacyRandomized) return { ...legacyBiteSizedDefinition(validated.dungeonId, seed)!, contentSourceDungeonId: validated.spot.sourceDungeonId, biteSizedSelection: validated };
+  const source = adaptedSourceRegistry[validated.spot.sourceDungeonId];
+  const baseline = legacyBiteSizedDefinition(validated.spot.dungeonId, seed);
+  if (!source || !baseline) throw new Error("The selected Bite-Sized parent is unavailable.");
+  return materializeBiteSizedLayout(source, baseline, validated, adaptedSourceRegistry, difficultyId);
+}
+
+/** Checkpoints made before the editor retain the original map and creature deal. */
+export function legacyBiteSizedRunSelection(id: string, seed: string): BiteSizedRunSelection | undefined {
+  if (!isLayoutBiteSizedDungeon(id)) return undefined;
+  const randomized = id.startsWith("randomized-");
+  const selection = selectBiteSizedRun(BITE_SIZED_DEFAULT_CONFIG, id, seed, {
+    eligibleDungeonIds: [randomized ? "bite-sized-stormwind-stockade" : id],
+  });
+  if (!randomized) return selection;
+  const definition = legacyBiteSizedDefinition(id, seed)!;
+  const pool = BITE_SIZED_LAYOUT_CATALOG.pools[id];
+  return normalizeBiteSizedSelection({ ...selection, legacyRandomized: true, mobs: selection.mobs.map((m) => {
+    const spawn = definition.staticSpawns.find((s) => s.id === m.placementId)!;
+    const ref = pool.find((c) => c.objectiveId === spawn.entityId)!;
+    return { placementId: m.placementId, sourceDungeonId: ref.sourceDungeonId, entityId: ref.entityId };
+  }) });
+}
+
+export function prepareDungeonSessionDefinition(id: string, seed: string, selection?: BiteSizedRunSelection, difficultyId?: string): DungeonDefinition | null {
+  const definition = isLayoutBiteSizedDungeon(id)
+    ? biteSizedDefinitionForSelection(selection ?? selectBiteSizedRun(useBiteSizedLayoutsStore.getState().config, id, seed), seed, difficultyId)
+    : dungeonDefinitionById(id);
+  if (definition) sessionDungeonDefinitions.set(id, definition);
   return definition;
 }
 

src/game/dungeonRunStore.ts

@@ -22,6 +22,7 @@ export function completedDungeonRun(progress: DungeonRunProgress): DungeonRunRec
   const definition = dungeonDefinitionById(progress.dungeonId);
   if (!definition || !progress.timed || progress.finishedAt === null || progress.durationMs === null) return null;
   return { id: progress.id, dungeonId: progress.dungeonId, difficultyId: progress.difficultyId,
+    ...(progress.biteSizedSelection ? { biteSizedSelection: progress.biteSizedSelection } : {}),
     bossDifficulty: progress.bossDifficulty,
     finishedAt: progress.finishedAt, durationMs: progress.durationMs, killedBossIds: progress.killedBossIds,
     party: progress.party, fullClear: dungeonBossesForDifficulty(definition, progress.difficultyId)

src/game/dungeonRunTypes.ts

@@ -1,4 +1,5 @@
 import { validBossDifficulty } from "./dungeonDifficulty";
+import { normalizeBiteSizedSelection, type BiteSizedRunSelection } from "../../shared/bite-sized-layouts.mjs";
 
 export interface DungeonRunMember {
   readonly name: string;
@@ -10,6 +11,7 @@ export interface DungeonRunMember {
 }
 
 export interface DungeonRunProgress {
+  readonly biteSizedSelection?: BiteSizedRunSelection;
   readonly id: string;
   readonly dungeonId: string;
   readonly difficultyId: string;
@@ -23,6 +25,7 @@ export interface DungeonRunProgress {
 }
 
 export interface DungeonRunRecord {
+  readonly biteSizedSelection?: BiteSizedRunSelection;
   readonly id: string;
   readonly dungeonId: string;
   readonly difficultyId: string;
@@ -74,7 +77,12 @@ export function normalizeDungeonRunProgress(value: unknown): DungeonRunProgress
     || (input.durationMs !== null && (input.finishedAt === null || input.durationMs < 1))
     || (input.finishedAt !== null && (input.durationMs === null || input.party.length === 0
       || input.durationMs !== Math.max(1, Math.round(input.finishedAt - input.startedAt!))))) return null;
+  let biteSizedSelection: BiteSizedRunSelection | undefined;
+  try { if (input.biteSizedSelection !== undefined) biteSizedSelection = normalizeBiteSizedSelection(input.biteSizedSelection); }
+  catch { return null; }
+  if (biteSizedSelection && biteSizedSelection.dungeonId !== input.dungeonId) return null;
   return { id: input.id, dungeonId: input.dungeonId, difficultyId: input.difficultyId,
+    ...(biteSizedSelection ? { biteSizedSelection } : {}),
     ...(input.bossDifficulty !== undefined ? { bossDifficulty: input.bossDifficulty } : {}),
     startedAt: input.startedAt, finishedAt: input.finishedAt, durationMs: input.durationMs,
     timed: input.timed, killedBossIds: [...new Set(input.killedBossIds)],

src/game/dungeonSession.ts

@@ -1,4 +1,6 @@
 import { useCombatStore } from "./combatStore";
+import type { BiteSizedRunSelection } from "../../shared/bite-sized-layouts.mjs";
+import { preparedBiteSizedRunSelection } from "../app/biteSizedLayoutContent";
 import { releaseDungeonGltfCache } from "./dungeonAssetCache";
 import { clearDungeonRuntimeCaches } from "./dungeonRuntimeReset";
 import { clearMobRuntimeRegistry } from "./mobRuntimeRegistry";
@@ -11,6 +13,7 @@ import {
   dungeonCanEnter,
   dungeonDefinitionById,
   prepareDungeonSessionDefinition,
+  legacyBiteSizedRunSelection,
   type DungeonId,
 } from "./dungeonRegistry";
 import type { WorldSpawn } from "./dungeonTypes";
@@ -32,6 +35,7 @@ import { useDungeonSimulationStore } from "./dungeonSimulationStore";
 import { dungeonRouteDefinition } from "./dungeonRoutes";
 
 export interface DungeonSessionOptions {
+  readonly biteSizedSelection?: BiteSizedRunSelection;
   readonly bossDifficulty?: number;
   readonly gameMode?: GameMode;
   readonly spawn?: WorldSpawn;
@@ -63,8 +67,11 @@ export function activateDungeonSession(
   const testingSource = bossTestingSourceDungeonId(dungeonId);
   const testing = Boolean(testingSource && options.gmTestMode && options.bossTest?.sourceDungeonId === testingSource);
   const dungeonSimulation = Boolean(options.dungeonSimulation && options.gmTestMode && dungeonRouteDefinition(dungeonId));
+  const suppliedSelection = options.biteSizedSelection ?? options.runProgress?.biteSizedSelection
+    ?? (options.preserveCharacter ? useDungeonRunStore.getState().progress?.biteSizedSelection : undefined)
+    ?? (options.runId ? preparedBiteSizedRunSelection(dungeonId, options.runId) : undefined);
   if (!definition || (!testing && !dungeonSimulation && !dungeonCanEnter(dungeonId))
-    || !dungeonContentIsUsable(testing ? testingSource! : dungeonId)) {
+    || !dungeonContentIsUsable(testing ? testingSource! : suppliedSelection?.spot.sourceDungeonId ?? dungeonId)) {
     return false;
   }
   if ((difficultyId !== undefined && !definition.difficultyVariants.some((variant) => variant.id === difficultyId))
@@ -78,7 +85,15 @@ export function activateDungeonSession(
       options.runProgress, options.legacyResume, bossDifficulty, options.runId);
   }
   const runSeed = useDungeonRunStore.getState().progress?.id ?? options.runId ?? "catalog-template";
-  definition = prepareDungeonSessionDefinition(dungeonId, runSeed) ?? definition;
+  const legacySelection = options.runProgress && !options.runProgress.biteSizedSelection
+    ? legacyBiteSizedRunSelection(dungeonId, runSeed) : undefined;
+  definition = prepareDungeonSessionDefinition(dungeonId, runSeed,
+    suppliedSelection ?? legacySelection ?? preparedBiteSizedRunSelection(dungeonId, runSeed),
+    difficultyId ?? definition.defaultDifficultyId) ?? definition;
+  const progress = useDungeonRunStore.getState().progress;
+  if (progress && definition.biteSizedSelection) useDungeonRunStore.setState({ progress: {
+    ...progress, biteSizedSelection: definition.biteSizedSelection, ...(options.gmTestMode ? { timed: false } : {}),
+  } });
   activateDungeonEncounterDefinitions(
     dungeonId,
     definition.encounters ?? [],
@@ -159,5 +174,6 @@ export function restartActiveDungeonSession(): boolean {
     preserveCharacter: true,
     bossDifficulty: game.activeBossDifficulty,
     encounterSnapshots,
+    biteSizedSelection: useDungeonRunStore.getState().progress?.biteSizedSelection,
   });
 }

src/game/dungeonTypes.ts

@@ -242,6 +242,8 @@ export interface DungeonValidationStatus {
 }
 
 export interface DungeonDefinition {
+  readonly contentSourceDungeonId?: string;
+  readonly biteSizedSelection?: import("../../shared/bite-sized-layouts.mjs").BiteSizedRunSelection;
   readonly schemaVersion: typeof DUNGEON_DEFINITION_SCHEMA_VERSION;
   readonly id: string;
   readonly title: string;

src/game/partyNavigation.ts

@@ -47,6 +47,8 @@ export interface PartyNavigationGraph {
 }
 
 export interface PartyNavigationBuildOptions {
+  /** Validation may retain floor triangles while gameplay routes off-mesh links through nodes. */
+  readonly retainSurfaceTriangles?: boolean;
   readonly weldTolerance?: number;
   /** Defensive runtime ceiling; checked before graph allocations begin. */
   readonly maxSourceTriangles?: number;
@@ -167,7 +169,7 @@ function connectedComponents(nodes: readonly MutableWeldedNode[]): number[][] {
   return components;
 }
 
-function buildPartyNavigationTriangleNodes(
+export function buildPartyNavigationTriangleNodes(
   triangles: readonly PartyNavigationTriangle[],
   positions: readonly PartyNavigationPosition[],
 ): readonly PartyNavigationTriangleNode[] {
@@ -432,7 +434,7 @@ export function buildPartyNavigationGraph(
 
   return Object.freeze({
     nodes: Object.freeze(nodes),
-    ...(usesOffMeshLinks ? {} : {
+    ...(usesOffMeshLinks && !options.retainSurfaceTriangles ? {} : {
       triangles: Object.freeze(triangles),
       triangleNodes,
     }),

src/game/partyNavigationAssetCache.ts

@@ -10,6 +10,10 @@ import { MAX_SYNCHRONOUS_PARTY_NAVIGATION_TRIANGLES } from "./partyNavigationPol
 const MAX_CACHED_NAVIGATION_GRAPHS = 8;
 const graphCache = new Map<string, PartyNavigationGraph>();
 
+export function cachedPartyNavigationGraph(url: string, links: readonly DungeonNavigationLink[], ramps: readonly DungeonTraversalRamp[] = [], retainSurfaceTriangles = false): PartyNavigationGraph | null {
+  return graphCache.get(graphCacheKey(url, links, ramps) + (retainSurfaceTriangles ? ":floor-validation" : "")) ?? null;
+}
+
 function graphCacheKey(
   url: string,
   offMeshLinks: readonly DungeonNavigationLink[],
@@ -60,8 +64,10 @@ export function preparePartyNavigationGraph(
   scene: Group,
   offMeshLinks: readonly DungeonNavigationLink[],
   ramps: readonly DungeonTraversalRamp[] = [],
+  maxSourceTriangles = MAX_SYNCHRONOUS_PARTY_NAVIGATION_TRIANGLES,
+  retainSurfaceTriangles = false,
 ): PartyNavigationGraph {
-  const cacheKey = graphCacheKey(url, offMeshLinks, ramps);
+  const cacheKey = graphCacheKey(url, offMeshLinks, ramps) + (retainSurfaceTriangles ? ":floor-validation" : "");
   const cached = graphCache.get(cacheKey);
   if (cached) {
     graphCache.delete(cacheKey);
@@ -79,7 +85,8 @@ export function preparePartyNavigationGraph(
     }
     const bridgedLinks = new Set(ramps.flatMap((ramp) => dungeonRampNavigationBridges(ramp).map((bridge) => bridge.linkId)));
     graph = buildPartyNavigationGraph(geometry, {
-      maxSourceTriangles: MAX_SYNCHRONOUS_PARTY_NAVIGATION_TRIANGLES,
+      maxSourceTriangles,
+      retainSurfaceTriangles,
       offMeshLinks: offMeshLinks.filter((link) => !bridgedLinks.has(link.id)),
     });
   } finally {

src/game/randomizedBiteSizedStockades.test.ts

@@ -112,7 +112,10 @@ describe("Randomized Bite-Sized Stockades", () => {
     expect(observedTrashLineups.size).toBeGreaterThan(1_900);
 
     expect(activateDungeonSession(RANDOMIZED_BITE_SIZED_STOCKADES_DUNGEON_ID, undefined, { runId: "shared-run" })).toBe(true);
-    expect(dungeonDefinitionById(RANDOMIZED_BITE_SIZED_STOCKADES_DUNGEON_ID)?.staticSpawns).toEqual(first.staticSpawns);
+    const selected = dungeonDefinitionById(RANDOMIZED_BITE_SIZED_STOCKADES_DUNGEON_ID)!;
+    expect(selected.biteSizedSelection?.dungeonId).toBe(RANDOMIZED_BITE_SIZED_STOCKADES_DUNGEON_ID);
+    expect(activateDungeonSession(RANDOMIZED_BITE_SIZED_STOCKADES_DUNGEON_ID, undefined, { runId: "shared-run", biteSizedSelection: selected.biteSizedSelection })).toBe(true);
+    expect(dungeonDefinitionById(RANDOMIZED_BITE_SIZED_STOCKADES_DUNGEON_ID)?.staticSpawns).toEqual(selected.staticSpawns);
   });
 
   it("uses the selected cross-dungeon boss for combat and completion", () => {

src/game/wowDungeonMap.ts

@@ -20,7 +20,7 @@ export interface WowDungeonMap {
 const maps = catalog.dungeons as unknown as Readonly<Record<string, WowDungeonMap>>;
 
 export function wowDungeonMapFor(dungeon: DungeonDefinition): WowDungeonMap | null {
-  const map = maps[dungeon.id];
+  const map = maps[dungeon.contentSourceDungeonId ?? dungeon.id];
   // A replacement environment must be reimported, never silently misaligned.
   return map?.mapId === dungeon.mapId
     && map.coordinateTransform === dungeon.provenance.coordinateTransform

src/scene/BiteSizedEditorMarkers.tsx

@@ -0,0 +1,46 @@
+import { useMemo } from "react";
+import { Html } from "@react-three/drei";
+import { useBiteSizedLayoutsStore } from "../game/biteSizedLayoutsStore";
+import { derivePartySpawnSlots } from "../game/partySpawnSlots";
+import { biteSizedDefinitionForSelection } from "../game/dungeonRegistry";
+import { selectBiteSizedRun, type LayoutVector } from "../../shared/bite-sized-layouts.mjs";
+import { MobPopulation } from "./MobPopulation";
+import { useGameStore } from "../game/store";
+import { resolveDungeonAssets } from "../game/dungeonAssets";
+import { cachedPartyNavigationGraph } from "../game/partyNavigationAssetCache";
+import { findNearestPartyNavigationSurface } from "../game/partyNavigation";
+
+function Marker({ id, position, yaw, color, label, selected }: {
+  readonly id: string; readonly position: LayoutVector; readonly yaw: number; readonly color: string; readonly label: string; readonly selected: boolean;
+}) {
+  const choose = () => useBiteSizedLayoutsStore.setState({ editingPointId: id, panelFocused: false });
+  return <group position={position} rotation={[0, yaw, 0]}>
+    <mesh position={[0, .08, 0]} rotation={[-Math.PI / 2, 0, 0]} onClick={(e) => { e.stopPropagation(); choose(); }}>
+      <ringGeometry args={[selected ? .7 : .55, selected ? 1 : .8, 24]} /><meshBasicMaterial color={color} depthTest={false} transparent opacity={.85} />
+    </mesh>
+    <mesh position={[0, .65, 0]} onClick={(e) => { e.stopPropagation(); choose(); }}><coneGeometry args={[.2, 1.1, 8]} /><meshBasicMaterial color={color} transparent opacity={.6} depthTest={false} /></mesh>
+    <mesh position={[0, .1, 1.15]}><boxGeometry args={[.13, .13, .9]} /><meshBasicMaterial color={color} depthTest={false} /></mesh>
+    {selected && <Html position={[0, 1.6, 0]} center style={{ pointerEvents: "none", color, fontSize: 12, whiteSpace: "nowrap", background: "#17171ddd", padding: "4px 8px", borderRadius: 5 }}>{label}</Html>}
+  </group>;
+}
+export function BiteSizedEditorMarkers() {
+  const layouts = useBiteSizedLayoutsStore();
+  const difficultyId = useGameStore((s) => s.activeDifficultyId);
+  const spot = layouts.draft.spots.find((s) => s.id === layouts.editingSpotId);
+  const preview = useMemo(() => {
+    if (!spot || layouts.editorMode !== "edit") return null;
+    try { return biteSizedDefinitionForSelection(selectBiteSizedRun(layouts.draft, spot.dungeonId, "gm-preview", { spotId: spot.id }), "gm-preview", difficultyId); }
+    catch { return null; }
+  }, [layouts.draft, layouts.editorMode, spot, difficultyId]);
+  if (!spot || layouts.editorMode !== "edit") return null;
+  const navigationUrl = preview && resolveDungeonAssets(preview).navigation;
+  const graph = navigationUrl && preview ? cachedPartyNavigationGraph(navigationUrl, preview.navigationLinks, preview.traversalRamps, true)
+    ?? cachedPartyNavigationGraph(navigationUrl, preview.navigationLinks, preview.traversalRamps) : null;
+  return <group name="bite-sized-editor-markers">
+    {preview && <MobPopulation active={false} showLabels={false} entities={preview.entities} roamingPacks={[]}
+      staticSpawns={[...preview.staticSpawns, ...(preview.encounterSpawnGroups ?? []).flatMap((g) => g.spawns)]} />}
+    {derivePartySpawnSlots(spot.partySpawn).map((p, i) => <Marker key={`party-${i}`} id="party" position={i > 0 && graph ? findNearestPartyNavigationSurface(graph, p.footPosition, 6)?.position ?? p.footPosition : p.footPosition} yaw={p.yaw} color="#55e8ff" label={`Party start · seat ${i + 1}`} selected={layouts.editingPointId === "party" && i === 0} />)}
+    <Marker id="boss" position={spot.bossSpawn.footPosition} yaw={spot.bossSpawn.yaw} color="#ff5570" label="Random boss spawn" selected={layouts.editingPointId === "boss"} />
+    {spot.mobs.map((m, i) => <Marker key={m.id} id={m.id} position={m.position} yaw={m.yaw} color="#ffd255" label={`Mob point ${i + 1}`} selected={layouts.editingPointId === m.id} />)}
+  </group>;
+}

src/scene/GameScene.tsx

@@ -9,6 +9,8 @@ import {
   type PointerEvent as ReactPointerEvent,
 } from "react";
 import { Canvas, useThree } from "@react-three/fiber";
+import { BiteSizedEditorMarkers } from "./BiteSizedEditorMarkers";
+import { useBiteSizedLayoutsStore } from "../game/biteSizedLayoutsStore";
 import { Physics } from "@react-three/rapier";
 import { requireDungeonDefinition } from "../game/dungeonRegistry";
 import { spawnMatchesDifficulty } from "../game/mobPopulation";
@@ -173,6 +175,7 @@ export function GameScene() {
   ];
   const roamingPacks = sessionPopulation.roamingPacks;
   const paused = useGameStore((state) => state.paused);
+  const editingBiteSized = useBiteSizedLayoutsStore((state) => state.editorMode === "edit");
   const dungeonIntroActive = useGameStore((state) => state.dungeonIntroActive);
   const raceStartBlocked = useGameStore((state) => state.raceStartBlocked);
   const mapOpen = useGameStore((state) => state.mapOpen);
@@ -407,7 +410,7 @@ export function GameScene() {
                 {simulationSessionMode === "play" ? <PlayerRig /> : <DungeonSpectatorCamera />}
                 {simulationSessionMode === "play" && <OnlinePlayerPopulation active={!simulationBlocked} />}
                 <PartyPopulation
-                  active={!simulationBlocked}
+                  active={!simulationBlocked && !editingBiteSized}
                   simulate={simulationSessionMode !== "spectate-replay" && (!sharedOnline || onlineAuthority)}
                 />
                 <DungeonSimulationSceneBridge />
@@ -416,13 +419,14 @@ export function GameScene() {
                 {gameMode === "dungeon" && (
                   <DungeonWorldObjects definitions={dungeon.serverGameObjects} />
                 )}
-                <MobPopulation
+                {!editingBiteSized && <MobPopulation
                   active={!simulationBlocked}
                   entities={stagePopulation.entities}
                   roamingPacks={roamingPacks}
                   staticSpawns={staticSpawns}
                   allowedRuntimeIds={allowedRuntimeIds}
-                />
+                />}
+                <BiteSizedEditorMarkers />
                 <CombatSummonPopulation active={!simulationBlocked} />
                 <WailingNaralexEvent />
                 <ShelvedGameSceneFeatures />

src/scene/combatEffectRuntime.ts

@@ -21,6 +21,10 @@ export const COMBAT_EFFECT_SYSTEM_LIMIT: Readonly<Record<CombatVfxQuality, numbe
 export function combatEffectVisualTuning(
   event: Pick<CombatPresentationEvent, "abilityId" | "phase">,
 ): { readonly scale: number; readonly opacity: number } {
+  if ((event.abilityId === "priest-flash-heal" || event.abilityId === "wow335-priest-flash-heal")
+    && event.phase === "impact") {
+    return { scale: 0.6, opacity: 0.4 };
+  }
   return event.abilityId === "wow335-priest-dispel-magic" && event.phase === "impact"
     ? { scale: 0.45, opacity: 0.4 }
     : { scale: 1, opacity: 1 };

src/ui/BiteSizedBoardFilters.tsx

@@ -0,0 +1,31 @@
+import { useEffect, useState } from "react";
+import { isLayoutBiteSizedDungeon } from "../../shared/bite-sized-layouts.mjs";
+import { useBiteSizedLayoutsStore } from "../game/biteSizedLayoutsStore";
+
+export function useBiteSizedBoardSelection(dungeonId: string) {
+  const config = useBiteSizedLayoutsStore((s) => s.config);
+  const history = useBiteSizedLayoutsStore((s) => s.historicalSpots);
+  const [spotId, setSpotId] = useState("");
+  const [revision, setRevision] = useState<number | null>(null);
+  const enabled = isLayoutBiteSizedDungeon(dungeonId);
+  useEffect(() => { if (enabled) void useBiteSizedLayoutsStore.getState().loadHistory(); }, [enabled, dungeonId]);
+  const spots = [...config.spots, ...history].filter((s) => dungeonId.startsWith("randomized-") || s.dungeonId === dungeonId)
+    .filter((s, i, all) => all.findIndex((other) => other.id === s.id) === i);
+  const spot = spots.find((s) => s.id === spotId) ?? spots[0];
+  const revisions = [...new Set([...history, ...config.spots].filter((s) => s.id === spot?.id).map((s) => s.revision))].sort((a, b) => b - a);
+  const spotRevision = revision !== null && revisions.includes(revision) ? revision : spot?.revision;
+  return { enabled, spots, spotId: enabled ? spot?.id : undefined, spotRevision: enabled ? spotRevision : undefined,
+    revisions, selectSpot: (id: string) => { setSpotId(id); setRevision(null); }, selectRevision: setRevision };
+}
+
+export function BiteSizedBoardFilters({ selection }: { readonly selection: ReturnType<typeof useBiteSizedBoardSelection> }) {
+  if (!selection.enabled) return null;
+  return <div className="bite-sized-board-filters" style={{ display: "flex", gap: 12, padding: "12px 0", flexWrap: "wrap" }}>
+    <label>Spot<select aria-label="Leaderboard spot" value={selection.spotId} onChange={(e) => selection.selectSpot(e.target.value)}>
+      {selection.spots.map((s) => <option key={s.id} value={s.id}>{s.name} · {s.sourceDungeonId}</option>)}
+    </select></label>
+    <label>Gameplay revision<select aria-label="Leaderboard revision" value={selection.spotRevision} onChange={(e) => selection.selectRevision(Number(e.target.value))}>
+      {selection.revisions.map((r) => <option key={r} value={r}>Revision {r}</option>)}
+    </select></label>
+  </div>;
+}

src/ui/BiteSizedEditor.tsx

@@ -0,0 +1,130 @@
+import { useEffect, useMemo, useState } from "react";
+import { BITE_SIZED_LAYOUT_CATALOG, biteSizedGameplayKey, normalizeBiteSizedConfig, selectBiteSizedRun, type BiteSizedSpot, type LayoutVector } from "../../shared/bite-sized-layouts.mjs";
+import { useBiteSizedLayoutsStore } from "../game/biteSizedLayoutsStore";
+import { useShellStore } from "../app/shellStore";
+import { sessionCanUseGmTools } from "../app/releaseFeatures";
+import { useGameStore } from "../game/store";
+import { enterBiteSizedEditorSpot, leaveBiteSizedEditor } from "../app/biteSizedEditorRuntime";
+import { prepareBiteSizedLayoutContent } from "../app/biteSizedLayoutContent";
+import { validateChangedBiteSizedSpots } from "../game/biteSizedLayoutValidation";
+import { FrontSurface } from "./FrontSurface";
+import { releasePointerLock } from "../game/inputManager";
+import { useDungeonRunStore } from "../game/dungeonRunStore";
+import "./biteSizedEditor.css";
+
+export function BiteSizedEditor({ inGame = false }: { readonly inGame?: boolean }) {
+  const layouts = useBiteSizedLayoutsStore();
+  const session = useShellStore((s) => s.session);
+  const grounded = useGameStore((s) => s.playerGrounded);
+  const testComplete = useDungeonRunStore((s) => s.progress?.finishedAt != null);
+  const [dungeonId, setDungeonId] = useState(BITE_SIZED_LAYOUT_CATALOG.dungeons[0].id);
+  const [collapsed, setCollapsed] = useState(false);
+  const [search, setSearch] = useState("");
+  const [crossDungeon, setCrossDungeon] = useState(false);
+  const [creatureKey, setCreatureKey] = useState("");
+  const [busy, setBusy] = useState(false);
+  const [message, setMessage] = useState("");
+  const current = layouts.draft.spots.find((s) => s.id === layouts.editingSpotId);
+  const activeDungeon = inGame && current ? current.dungeonId : dungeonId;
+  const spots = layouts.draft.spots.filter((s) => s.dungeonId === activeDungeon);
+  const spot = current?.dungeonId === activeDungeon ? current : spots[0];
+  const selectedPoint = layouts.editingPointId;
+  const mob = spot?.mobs.find((m) => m.id === selectedPoint);
+  const position = mob?.position ?? (selectedPoint === "boss" ? spot?.bossSpawn.footPosition : spot?.partySpawn.footPosition);
+  const yaw = mob?.yaw ?? (selectedPoint === "boss" ? spot?.bossSpawn.yaw : spot?.partySpawn.yaw) ?? 0;
+  const creatures = useMemo(() => BITE_SIZED_LAYOUT_CATALOG.creatures.filter((c) => c.kind === "mob"
+    && (crossDungeon || c.sourceDungeonId === spot?.sourceDungeonId)
+    && `${c.name} ${c.dungeonTitle}`.toLowerCase().includes(search.toLowerCase())).sort((a, b) => a.name.localeCompare(b.name)), [crossDungeon, search, spot?.sourceDungeonId]);
+  const creature = creatures.find((c) => `${c.sourceDungeonId}:${c.entityId}` === creatureKey) ?? creatures[0];
+  useEffect(() => { if (!inGame) void useBiteSizedLayoutsStore.getState().refresh(); }, [inGame]);
+  useEffect(() => () => { useBiteSizedLayoutsStore.setState({ panelFocused: false }); }, []);
+  if (!sessionCanUseGmTools(session) || (inGame && !layouts.editorMode)) return null;
+  const attempt = async (action: () => Promise<unknown>) => {
+    setBusy(true); setMessage("");
+    try { await action(); } catch (error) { setMessage(error instanceof Error ? error.message : "Action failed."); }
+    finally { setBusy(false); }
+  };
+  const select = (id: string) => useBiteSizedLayoutsStore.setState({ editingSpotId: id, editingPointId: "party" });
+  const updatePoint = (next: LayoutVector, facing = yaw) => {
+    if (!spot) return;
+    const changed = selectedPoint === "boss" ? { ...spot, bossSpawn: { footPosition: next, yaw: facing } }
+      : mob ? { ...spot, mobs: spot.mobs.map((m) => m.id === mob.id ? { ...m, position: next, yaw: facing } : m) }
+      : { ...spot, partySpawn: { footPosition: next, yaw: facing } };
+    layouts.updateSpot(changed);
+  };
+  const capture = () => { const game = useGameStore.getState(); if (game.playerGrounded) updatePoint([...game.playerPosition], game.cameraYaw); };
+  const preparePreview = async (next: BiteSizedSpot) => {
+    const currentDraft = useBiteSizedLayoutsStore.getState().draft;
+    const draft = { ...currentDraft, spots: currentDraft.spots.map((s) => s.id === next.id ? next : s) };
+    const selection = selectBiteSizedRun(draft, next.dungeonId, "gm-preview", { spotId: next.id });
+    await prepareBiteSizedLayoutContent(next.dungeonId, "gm-preview", selection);
+  };
+  const addMob = () => {
+    if (!spot || !creature) return;
+    const game = useGameStore.getState();
+    const id = `mob-${crypto.randomUUID()}`;
+    const next = { ...spot, mobs: [...spot.mobs, { id, sourceDungeonId: creature.sourceDungeonId, entityId: creature.entityId,
+      position: inGame ? [...game.playerPosition] as LayoutVector : spot.partySpawn.footPosition, yaw: inGame ? game.cameraYaw : 0 }] };
+    void attempt(async () => { await preparePreview(next); layouts.updateSpot(next); useBiteSizedLayoutsStore.setState({ editingPointId: id }); });
+  };
+  const createSpot = (duplicate: boolean) => {
+    if (!spot) return;
+    const id = `spot-${crypto.randomUUID()}`;
+    const game = useGameStore.getState();
+    const next: BiteSizedSpot = duplicate ? { ...spot, id, revision: 0, name: `${spot.name.slice(0, 90)} copy`, mobs: spot.mobs.map((m) => ({ ...m, id: `mob-${crypto.randomUUID()}` })) }
+      : { ...spot, id, revision: 0, name: "New spot", legacyLayout: false, mobs: [], bossActivation: "after-mobs",
+        partySpawn: inGame ? { footPosition: [...game.playerPosition], yaw: game.cameraYaw } : spot.partySpawn,
+        bossSpawn: inGame ? { footPosition: [...game.playerPosition], yaw: game.cameraYaw } : spot.partySpawn };
+    layouts.replaceDraft({ schemaVersion: 1, spots: [...layouts.draft.spots, next] }); select(id);
+    if (inGame) void attempt(() => enterBiteSizedEditorSpot(id));
+  };
+  const publish = () => void attempt(async () => {
+    const draft = normalizeBiteSizedConfig(useBiteSizedLayoutsStore.getState().draft);
+    for (const changed of draft.spots) {
+      const previous = layouts.config.spots.find((s) => s.id === changed.id);
+      if (!previous || biteSizedGameplayKey(previous) !== biteSizedGameplayKey(changed)) await preparePreview(changed);
+    }
+    await validateChangedBiteSizedSpots(draft.spots, layouts.config.spots);
+    if (await layouts.publish(session)) setMessage("Published. New runs use these layouts; active runs keep their saved spot.");
+  });
+  const content = <section className={`bite-sized-editor ${inGame ? "bite-sized-editor--world" : ""} ${collapsed ? "is-collapsed" : ""}`}
+    aria-label="Bite-Sized Editor" onPointerDown={() => releasePointerLock()}
+    onFocusCapture={() => { releasePointerLock(); useBiteSizedLayoutsStore.setState({ panelFocused: true }); }}
+    onBlurCapture={(event) => { if (!event.currentTarget.contains(event.relatedTarget)) useBiteSizedLayoutsStore.setState({ panelFocused: false }); }}>
+    <header><div><p className="eyebrow">GM world authoring</p><h1>Bite-Sized Editor</h1></div>
+      {inGame && <button onClick={() => { setCollapsed(!collapsed); useBiteSizedLayoutsStore.setState({ panelFocused: false }); }} aria-label={collapsed ? "Expand editor" : "Collapse editor"}>{collapsed ? "+" : "−"}</button>}
+      <button onClick={() => inGame ? leaveBiteSizedEditor() : useShellStore.getState().returnToMainMenu()}>{inGame ? "Spot browser" : "Main menu"}</button></header>
+    {!collapsed && <div className="bite-sized-editor__body">
+      <p className="bite-sized-editor__status">{layouts.dirty ? "Unsaved draft" : `Published revision ${layouts.revision}`} · {layouts.editorMode === "test" ? `${testComplete ? "Test complete" : "Test run"} — rewards disabled` : inGame ? "Combat disabled · walk to place points" : "Choose a spot to visit"}</p>
+      {!inGame && <label>Dungeon<select aria-label="Dungeon" value={activeDungeon} onChange={(e) => { setDungeonId(e.target.value); useBiteSizedLayoutsStore.setState({ editingSpotId: null }); }}>{BITE_SIZED_LAYOUT_CATALOG.dungeons.map((d) => <option key={d.id} value={d.id}>{d.title}</option>)}</select></label>}
+      <label>Spot<select aria-label="Spot" value={spot?.id ?? ""} disabled={busy} onChange={(e) => { select(e.target.value); if (inGame) void attempt(() => enterBiteSizedEditorSpot(e.target.value)); }}>{spots.map((s) => <option key={s.id} value={s.id}>{s.name}</option>)}</select></label>
+      {spot && <>
+        <div className="bite-sized-editor__actions"><button disabled={busy} onClick={() => void attempt(() => enterBiteSizedEditorSpot(spot.id))}>{layouts.editorMode === "test" ? "Return to editing" : "Go to spot"}</button>
+          <button disabled={busy} onClick={() => void attempt(() => enterBiteSizedEditorSpot(spot.id, "test"))}>Test run</button></div>
+        {layouts.editorMode !== "test" && <>
+          <label>Spot name<input value={spot.name} maxLength={100} onChange={(e) => layouts.updateSpot({ ...spot, name: e.target.value })} /></label>
+          <div className="bite-sized-editor__actions"><button disabled={busy || spots.length >= 80} onClick={() => createSpot(false)}>New spot</button><button disabled={busy || spots.length >= 80} onClick={() => createSpot(true)}>Duplicate spot</button>
+            <button disabled={busy || spots.length <= 1} onClick={() => { layouts.replaceDraft({ schemaVersion: 1, spots: layouts.draft.spots.filter((s) => s.id !== spot.id) }); const next = spots.find((s) => s.id !== spot.id)!; select(next.id); if (inGame) void attempt(() => enterBiteSizedEditorSpot(next.id)); }}>Remove spot</button></div>
+          <label>Boss arrival<select aria-label="Boss arrival" value={spot.bossActivation} onChange={(e) => layouts.updateSpot({ ...spot, bossActivation: e.target.value as BiteSizedSpot["bossActivation"] })}><option value="after-mobs">After all mobs die</option><option value="immediate">Present from start</option></select></label>
+          <div className="bite-sized-editor__points"><button aria-pressed={selectedPoint === "party"} onClick={() => useBiteSizedLayoutsStore.setState({ editingPointId: "party" })}>Party start</button><button aria-pressed={selectedPoint === "boss"} onClick={() => useBiteSizedLayoutsStore.setState({ editingPointId: "boss" })}>Random boss spawn</button></div>
+          <label>Mob points ({spot.mobs.length})<select value={mob?.id ?? ""} onChange={(e) => useBiteSizedLayoutsStore.setState({ editingPointId: e.target.value || "party" })}><option value="">Select a mob point</option>{spot.mobs.map((m, i) => <option key={m.id} value={m.id}>{i + 1}. {BITE_SIZED_LAYOUT_CATALOG.creatures.find((c) => c.sourceDungeonId === m.sourceDungeonId && c.entityId === m.entityId)?.name ?? m.entityId}</option>)}</select></label>
+          {position && <fieldset><legend>{mob ? "Mob spawn" : selectedPoint === "boss" ? "Boss spawn" : "Party anchor"}</legend>
+            <div className="bite-sized-editor__coordinates">{["X", "Y", "Z"].map((axis, i) => <label key={axis}>{axis}<input aria-label={`Spawn ${axis}`} type="number" step="0.1" value={position[i]} onChange={(e) => { const n = e.currentTarget.valueAsNumber; if (Number.isFinite(n)) { const next = [...position] as [number, number, number]; next[i] = n; updatePoint(next); } }} /></label>)}</div>
+            <label>Facing<input aria-label="Spawn facing" type="number" step="0.05" value={yaw} onChange={(e) => { if (Number.isFinite(e.currentTarget.valueAsNumber)) updatePoint(position, e.currentTarget.valueAsNumber); }} /></label>
+            <div className="bite-sized-editor__actions"><button disabled={!inGame || !grounded} onClick={capture}>Set here</button><button disabled={!inGame} onClick={() => { useBiteSizedLayoutsStore.setState({ panelFocused: false }); useGameStore.getState().relocatePlayer({ footPosition: position, yaw }); }}>Go to point</button></div>
+          </fieldset>}
+          <h2>Dungeon creatures</h2><label>Search mobs<input aria-label="Search mobs" value={search} onChange={(e) => setSearch(e.target.value)} placeholder="Name or source dungeon" /></label>
+          <label className="bite-sized-editor__check"><input type="checkbox" checked={crossDungeon} onChange={(e) => setCrossDungeon(e.target.checked)} />Other dungeons</label>
+          <label>Mob type<select aria-label="Mob type" value={creature ? `${creature.sourceDungeonId}:${creature.entityId}` : ""} onChange={(e) => setCreatureKey(e.target.value)}>{creatures.map((c) => <option key={`${c.sourceDungeonId}:${c.entityId}`} value={`${c.sourceDungeonId}:${c.entityId}`}>{c.name}{crossDungeon ? ` · ${c.dungeonTitle}` : ""}</option>)}</select></label>
+          <div className="bite-sized-editor__actions"><button disabled={busy || !creature || (inGame && !grounded) || spot.mobs.length >= 500} onClick={addMob}>{inGame ? "Add mob here" : "Add mob point"}</button>
+            {mob && <button disabled={busy || !creature} onClick={() => void attempt(async () => { const next = { ...spot, mobs: spot.mobs.map((m) => m.id === mob.id ? { ...m, sourceDungeonId: creature!.sourceDungeonId, entityId: creature!.entityId } : m) }; await preparePreview(next); layouts.updateSpot(next); })}>Change mob type</button>}</div>
+          {mob && <div className="bite-sized-editor__actions"><button disabled={busy} onClick={() => { const id = `mob-${crypto.randomUUID()}`; layouts.updateSpot({ ...spot, mobs: [...spot.mobs, { ...mob, id, position: [mob.position[0] + 1, mob.position[1], mob.position[2]] }] }); useBiteSizedLayoutsStore.setState({ editingPointId: id }); }}>Duplicate mob point</button><button onClick={() => { layouts.updateSpot({ ...spot, mobs: spot.mobs.filter((m) => m.id !== mob.id) }); useBiteSizedLayoutsStore.setState({ editingPointId: "party" }); }}>Remove mob point</button></div>}
+          <p className="bite-sized-editor__hint">Bosses are rolled per run. Randomized mode uses these points with creatures from its selected pool.</p>
+        </>}
+      </>}
+      {(message || layouts.error) && <p role="status">{message || layouts.error}</p>}
+      <footer><button disabled={!layouts.dirty || busy || layouts.saving} onClick={() => { layouts.discard(); setMessage("Draft discarded."); }}>Discard</button><button disabled={busy || layouts.loading} onClick={() => void layouts.refresh()}>Refresh published</button><button disabled={!layouts.dirty || busy || layouts.saving} onClick={publish}>{busy || layouts.saving ? "Working…" : "Save & publish"}</button></footer>
+    </div>}
+  </section>;
+  return inGame ? content : <FrontSurface className="bite-sized-editor-browser" ariaLabel="Bite-Sized spot browser">{content}</FrontSurface>;
+}

src/ui/DungeonRaceScreen.tsx

@@ -13,6 +13,7 @@ import { partyRolesForClass, PARTY_ROLE_LABELS, type PartyRole } from "../game/p
 import { specializationById } from "../game/specializationCatalog";
 import { BrandMark, FrontSurface } from "./FrontSurface";
 import "./dungeonRace.css";
+import { BiteSizedBoardFilters, useBiteSizedBoardSelection } from "./BiteSizedBoardFilters";
 
 interface BoardEntry { readonly accountId: string; readonly username: string; readonly rank: number;
   readonly wins?: number; readonly losses?: number; readonly durationMs?: number;
@@ -46,18 +47,20 @@ export function DungeonRaceScreen({ onClose }: { readonly onClose: () => void })
   const bossOptions = boardDungeon?.difficulties.find((entry) => entry.id === boardDungeon.defaultDifficultyId)
     ?.finalBossIds?.map((id) => boardDungeon.bosses.find((boss) => boss.id === id)!) ?? [];
   const selectedBoardBossId = bossOptions.find((boss) => boss.id === boardBossId)?.id ?? bossOptions[0]?.id;
+  const spotBoard = useBiteSizedBoardSelection(boardDungeonId);
   useEffect(() => {
     const controller = new AbortController();
     const query = new URLSearchParams({ view: boardScope === "overall" ? "wins" : boardView,
       period, ...(boardScope === "dungeon" && boardDungeonId ? { dungeon: boardDungeonId,
-        ...(selectedBoardBossId ? { boss: selectedBoardBossId } : {}) } : {}) });
+        ...(selectedBoardBossId ? { boss: selectedBoardBossId } : {}),
+        ...(boardView === "times" && spotBoard.spotId ? { spot: spotBoard.spotId, spotRevision: String(spotBoard.spotRevision) } : {}) } : {}) });
     if (boardScope === "dungeon" && !boardDungeonId) { setBoard(null); return; }
     void requestOnlineJson<BoardResponse>(`/api/dungeon-races/leaderboard?${query}`, { signal: controller.signal })
       .then((value) => { setBoard(value); setBoardError(""); })
       .catch((error: unknown) => { if (!controller.signal.aborted) { setBoard(null);
         setBoardError(error instanceof Error ? error.message : "Leaderboard unavailable."); } });
     return () => controller.abort();
-  }, [boardDungeonId, boardScope, boardView, period, selectedBoardBossId]);
+  }, [boardDungeonId, boardScope, boardView, period, selectedBoardBossId, spotBoard.spotId, spotBoard.spotRevision]);
   const specialization = specializationById(character?.specializationId);
   const roles = character?.categoryId === "rom" ? partyRolesForClass(character.classId)
     : specialization ? [specialization.role] : [];
@@ -121,6 +124,7 @@ export function DungeonRaceScreen({ onClose }: { readonly onClose: () => void })
       </section>
       <section className="dungeon-race-screen__board" aria-label="Dungeon Race leaderboards">
         <h2>Leaderboards</h2>
+        {boardScope === "dungeon" && boardView === "times" && <BiteSizedBoardFilters selection={spotBoard} />}
         <div className="dungeon-race-screen__choices"><button className="front-button" type="button" aria-pressed={boardScope === "overall"} onClick={() => setBoardScope("overall")}>Overall wins</button>
           <button className="front-button" type="button" aria-pressed={boardScope === "dungeon"} onClick={() => setBoardScope("dungeon")}>This dungeon</button></div>
         {boardScope === "dungeon" && <div className="dungeon-race-screen__choices"><button className="front-button" type="button" aria-pressed={boardView === "wins"} onClick={() => setBoardView("wins")}>Wins &amp; losses</button>

src/ui/DungeonRunResults.tsx

@@ -68,6 +68,7 @@ export function DungeonRunResultsDialog({ progress, ranking, onFinish, onLoot, o
       <header><p className="front-kicker">{fullClear ? "Full dungeon clear" : "Final boss clear"}</p>
         <h2 id="dungeon-results-title">{definition?.title ?? progress.dungeonId} complete</h2>
         <p>The final boss is defeated. Your expedition is complete.</p>
+        {progress.biteSizedSelection && <p>{progress.biteSizedSelection.spot.name} · layout revision {progress.biteSizedSelection.spot.revision}</p>}
       </header>
       <div className="dungeon-results__score">
         <div><small>Time to final boss</small><strong>{progress.timed && progress.durationMs !== null

src/ui/DungeonSelectScreen.tsx

@@ -1,4 +1,5 @@
 import { useMemo, useState } from "react";
+import { BiteSizedBoardFilters, useBiteSizedBoardSelection } from "./BiteSizedBoardFilters";
 import { dungeonContentIsUsable, installContentPack } from "../content/contentManager";
 import { useContentManagerSnapshot } from "../content/useContentManager";
 import { classById, raceById } from "../app/characterCatalog";
@@ -12,7 +13,7 @@ import {
   type DungeonCategoryId,
   type DungeonId,
 } from "../game/dungeonCatalog";
-import { dungeonDefinitionById } from "../game/dungeonRegistry";
+import { dungeonDefinitionById, legacyBiteSizedRunSelection } from "../game/dungeonRegistry";
 import {
   partyRolesForClass,
   PARTY_ROLE_LABELS,
@@ -38,6 +39,7 @@ import { useCompanionPartyPreferences } from "../game/companionPartyPreferences"
 import { CompanionPoolControls } from "./CompanionPoolControls";
 import { CompanionReadinessScreen } from "./CompanionReadinessScreen";
 import { dungeonContentPackId } from "../game/dungeonContentSource";
+import { prepareBiteSizedLayoutContent } from "../app/biteSizedLayoutContent";
 
 installDungeonShellRuntime();
 
@@ -81,6 +83,7 @@ export function DungeonSelectScreen() {
   const [pendingDownload, setPendingDownload] = useState<PendingDungeonDownload | null>(null);
   const [downloadError, setDownloadError] = useState("");
   const [downloading, setDownloading] = useState(false);
+  const [preparingSpot, setPreparingSpot] = useState(false);
   const categoryDungeons = dungeonsByCategory(selectedCategory);
   const firstCategoryDungeon = categoryDungeons.find((dungeon) => dungeon.available) ?? categoryDungeons[0];
   const selectedDungeon = categoryDungeons.find((dungeon) => dungeon.id === selectedDungeonId)
@@ -105,8 +108,9 @@ export function DungeonSelectScreen() {
     const index = bossOptions.findIndex((boss) => boss.id === selectedBoss?.id);
     if (hasBossBoards && bossOptions.length) setLeaderboardBossId(bossOptions[(index + 1) % bossOptions.length].id);
   };
+  const spotBoard = useBiteSizedBoardSelection(selectedDungeon?.id ?? "");
   const leaderboard = useDungeonLeaderboard(selectedDungeon?.id ?? "", leaderboardDifficulty?.id ?? "normal",
-    clearFilter, bossDifficulty, selectedBoss?.id);
+    clearFilter, bossDifficulty, selectedBoss?.id, spotBoard.spotId, spotBoard.spotRevision);
   const toggleRun = (id: string) => setExpandedRuns((current) => {
     const next = new Set(current); if (next.has(id)) next.delete(id); else next.add(id); return next;
   });
@@ -140,9 +144,20 @@ export function DungeonSelectScreen() {
   };
 
   const continueAsRole = async (role: PartyRole) => {
-    if (!selectedDungeon?.available || !character) return;
+    if (!selectedDungeon?.available || !character || preparingSpot) return;
     if (!onlineGroup || !session || session.kind !== "account") {
-      enterDungeon(selectedDungeon.id, role, { difficultyId: leaderboardDifficulty?.id, bossDifficulty });
+      setPreparingSpot(true);
+      useShellStore.getState().setNotice("Preparing dungeon and creature downloads...");
+      try {
+        const checkpoint = character.dungeonRunCheckpoint;
+        const resume = checkpoint?.dungeonId === selectedDungeon.id && checkpoint.run?.finishedAt == null
+          && (leaderboardDifficulty?.id === undefined || checkpoint.difficultyId === leaderboardDifficulty.id)
+          && checkpoint.run?.bossDifficulty === bossDifficulty ? checkpoint.run : undefined;
+        const runId = resume?.id ?? crypto.randomUUID();
+        const biteSizedSelection = await prepareBiteSizedLayoutContent(selectedDungeon.id, runId, resume ? resume.biteSizedSelection ?? legacyBiteSizedRunSelection(selectedDungeon.id, runId) : undefined);
+        enterDungeon(selectedDungeon.id, role, { difficultyId: leaderboardDifficulty?.id, bossDifficulty, runId, ...(biteSizedSelection ? { biteSizedSelection } : {}) });
+      } catch (error) { useShellStore.getState().setNotice(error instanceof Error ? error.message : "Could not prepare the spot."); }
+      finally { setPreparingSpot(false); }
       return;
     }
     if (!await updateOnlineMember(session, character, role)) return;
@@ -240,6 +255,7 @@ export function DungeonSelectScreen() {
       ? availableRoles.map((role) => ({
         id: `dungeon-role-${role}`,
         run: () => enterAsRole(role),
+        enabled: !preparingSpot,
       }))
       : [{
         id: "choose-dungeon-role",
@@ -251,7 +267,7 @@ export function DungeonSelectScreen() {
       run: () => setRolePickerOpen(false),
     }] : []),
     { id: "dungeon-back", run: returnToMainMenu },
-  ], [availableRoles, categoryDungeons, downloading, firstCategoryDungeon, pendingDownload, returnToMainMenu, rolePickerOpen, selectedCategory, selectedDungeon, selectedDefinition, leaderboard, leaderboardOpen, expandedRuns, leaderboardDifficulty, bossDifficulty, hasBossBoards, selectedBoss]);
+  ], [availableRoles, categoryDungeons, downloading, preparingSpot, firstCategoryDungeon, pendingDownload, returnToMainMenu, rolePickerOpen, selectedCategory, selectedDungeon, selectedDefinition, leaderboard, leaderboardOpen, expandedRuns, leaderboardDifficulty, bossDifficulty, hasBossBoards, selectedBoss]);
   const controller = useMenuController(actions, {
     initialId: firstAvailable ? `dungeon-${firstAvailable.id}` : "dungeon-back",
     onBack: pendingDownload
@@ -389,6 +405,7 @@ export function DungeonSelectScreen() {
                             select={controller.select}
                             className={`dungeon-role-option dungeon-role-option--${role}`}
                             type="button"
+                            disabled={preparingSpot}
                             onClick={() => enterAsRole(role)}
                           >
                             <b aria-hidden="true">{ROLE_DETAILS[role].sigil}</b>
@@ -433,6 +450,7 @@ export function DungeonSelectScreen() {
                 </section>
                 {leaderboardOpen && (
                   <div id="dungeon-select-leaderboard" className="dungeon-select-leaderboard-column">
+                    <BiteSizedBoardFilters selection={spotBoard} />
                     <DungeonLeaderboard dungeonTitle={selectedDungeon.title} data={leaderboard.data} scope={leaderboard.scope}
                       loading={leaderboard.loading} filter={clearFilter} onFilter={setClearFilter}
                       expanded={expandedRuns} onExpand={toggleRun} offset={leaderboard.offset} onPage={leaderboard.setOffset}

src/ui/DungeonSimulationAdminScreen.tsx

@@ -225,6 +225,7 @@ export function DungeonSimulationAdminScreen() {
         <BrandMark />
         <div><p className="eyebrow">Game Master tools</p><h1>Dungeon route simulations</h1></div>
         <div className="dungeon-sim-admin__header-actions">
+          <button className="front-button" type="button" onClick={() => useShellStore.setState({ phase: "bite-sized-editor" })}>Bite-Sized Editor</button>
           <button className="front-button" type="button" onClick={() => setQueuePolicyOpen(true)}>Random queues</button>
           <button className="front-button" type="button" onClick={() => setCreatureReadinessOpen(true)}>Creature readiness</button>
           <button className="front-button" type="button" onClick={() => void refresh()} disabled={busy}>Refresh</button>

src/ui/GmAdminScreen.tsx

@@ -130,6 +130,7 @@ export function GmAdminScreen() {
         <BrandMark compact />
         <div><span>Server authority / revision {revision}</span><strong>Manastorm GM Tools</strong></div>
         <div className="gm-admin-header__actions">
+          <button className="front-button" type="button" onClick={() => useShellStore.setState({ phase: "bite-sized-editor" })}>Bite-Sized Editor</button>
           <button className="front-button" type="button" disabled={!dirty || saving} onClick={resetDraft}>Discard</button>
           <button className="front-button front-button--primary" type="button" disabled={!dirty || saving} onClick={() => { void publish(session); }}>
             {saving ? "Publishing…" : "Save & publish"}

src/ui/MainMenuScreen.tsx

@@ -222,6 +222,7 @@ function MainMenuDestinations({ onOpenDownloads, onOpenReports, onOpenCards, onO
     { id: "random-queue-cancel", run: closeRandomQueue, enabled: !queueing },
   ] : gmMenuOpen ? [
     ...(isGm ? [{ id: "gm-menu-gm-tools", run: openGmAdmin, neighbors: { up: "gm-menu-close" } }] : []),
+    ...(isGm ? [{ id: "gm-menu-bite-sized", run: () => useShellStore.setState({ phase: "bite-sized-editor" }) }] : []),
     { id: "gm-menu-boss-testing", run: onOpenBossTesting, ...(!isGm ? { neighbors: { up: "gm-menu-close" } } : {}) },
     { id: "gm-menu-companion-readiness", run: onOpenReadiness },
     ...(isGm ? [{ id: "gm-menu-balance-tuning", run: onOpenBalanceTuning }] : []),
@@ -445,6 +446,10 @@ function MainMenuDestinations({ onOpenDownloads, onOpenReports, onOpenCards, onO
                     className="front-button main-menu-mode main-menu-mode--gm" type="button" disabled={!isGm} onClick={openGmAdmin}>
                     <b aria-hidden="true">GM</b><span><strong>GM Tools</strong><small>Run dungeon simulations, inspect findings, and review recordings.</small></span><em>{isGm ? "Authorized" : "GM account required"}</em>
                   </ControllerButton>
+                  {isGm && <ControllerButton controlId="gm-menu-bite-sized" selectedId={controller.selectedId} select={controller.select}
+                    className="front-button main-menu-mode main-menu-mode--gm" type="button" onClick={() => useShellStore.setState({ phase: "bite-sized-editor" })}>
+                    <b aria-hidden="true">BS</b><span><strong>Bite-Sized Editor</strong><small>Visit spots and place party, mob, and boss spawns.</small></span><em>Author</em>
+                  </ControllerButton>}
                   <ControllerButton controlId="gm-menu-boss-testing" selectedId={controller.selectedId} select={controller.select}
                     className="front-button main-menu-mode main-menu-mode--gm" type="button" onClick={onOpenBossTesting}>
                     <b aria-hidden="true">BT</b><span><strong>Boss Testing</strong><small>Fight a selected or random encounter in an empty testing room.</small></span><em>Open</em>

src/ui/RandomizedBiteSizedScreen.tsx

@@ -21,6 +21,7 @@ import { OnlineGroupPanel } from "./OnlineGroupPanel";
 import { CompanionPoolControls } from "./CompanionPoolControls";
 import { CompanionReadinessScreen } from "./CompanionReadinessScreen";
 import { ensureRandomizedBiteSizedRunContent } from "../app/randomizedBiteSizedContent";
+import { BITE_SIZED_LAYOUT_CATALOG } from "../../shared/bite-sized-layouts.mjs";
 
 installDungeonShellRuntime();
 
@@ -50,7 +51,7 @@ export function RandomizedBiteSizedScreen({ onClose }: { readonly onClose: () =>
   const dungeonId = pool === "all" ? RANDOMIZED_BITE_SIZED_STOCKADES_DUNGEON_ID : RANDOMIZED_BITE_SIZED_AVAILABLE_DUNGEON_ID;
   const DUNGEON = dungeonById(dungeonId);
   const CANDIDATES = pool === "all" ? AVAILABLE_RANDOMIZED_CREATURE_CATALOG : BITE_SIZED_RANDOMIZED_CREATURE_CATALOG;
-  const installed = dungeonContentIsUsable(dungeonId);
+  const installed = BITE_SIZED_LAYOUT_CATALOG.dungeons.some((d) => dungeonContentIsUsable(d.sourceDungeonId));
   const mobCount = CANDIDATES.filter((candidate) => candidate.kind === "mob").length;
   const bossCount = CANDIDATES.filter((candidate) => candidate.kind === "boss").length;
   const queueEnabled = Boolean(DUNGEON && dungeonEnabledForQueue(queuePolicy, DUNGEON));
@@ -124,7 +125,7 @@ export function RandomizedBiteSizedScreen({ onClose }: { readonly onClose: () =>
         <section className="randomized-bite-sized-screen__hero">
           <p className="front-kicker">A different lineup every run</p>
           <h1>Randomized Bite-Sized</h1>
-          <p>Cellblock Shuffle deals a different mob into every corridor slot and one final boss. Both come from the creature pool you choose.</p>
+          <p>Visit a random saved spot in an eligible dungeon. Each mob point and the final boss draw creatures from the pool you choose.</p>
           <div className="randomized-bite-sized-screen__odds">
             <div><strong>{mobCount}</strong><span>mob types in the shuffle</span></div>
             <div><strong>{bossCount}</strong><span>possible final bosses</span></div>

src/ui/biteSizedEditor.css

@@ -0,0 +1,28 @@
+.bite-sized-editor { --spot-accent: #e8c580; color: #f4ebd8; background: rgba(22, 21, 26, .96); border: 1px solid #635443; border-radius: 12px; padding: 14px; width: min(680px, 94vw); margin: 20px auto; box-shadow: 0 12px 40px #0008; }
+.bite-sized-editor--world { position: absolute; z-index: 45; top: 12px; right: 12px; width: min(330px, 30vw); max-height: calc(100dvh - 76px); margin: 0; display: flex; flex-direction: column; }
+.bite-sized-editor--world header { flex-shrink: 0; }
+.bite-sized-editor--world .bite-sized-editor__body { min-height: 0; max-height: none; flex: 1 1 auto; }
+.bite-sized-editor header { display: flex; gap: 8px; align-items: center; }
+.bite-sized-editor header > div { flex: 1; }
+.bite-sized-editor h1 { font-size: 19px; margin: 2px 0 8px; }
+.bite-sized-editor h2 { font-size: 15px; margin: 14px 0 5px; color: var(--spot-accent); }
+.bite-sized-editor__body { overflow-y: auto; max-height: calc(100dvh - 110px); display: grid; gap: 9px; padding-right: 3px; }
+.bite-sized-editor label { display: grid; gap: 4px; font-size: 12px; }
+.bite-sized-editor input, .bite-sized-editor select { min-width: 0; width: 100%; box-sizing: border-box; padding: 7px; color: #f4ebd8; background: #17171d; border: 1px solid #615747; border-radius: 5px; }
+.bite-sized-editor button { color: #f4ebd8; background: #3b332a; border: 1px solid #74614c; border-radius: 5px; padding: 7px 9px; font: inherit; font-size: 12px; cursor: pointer; }
+.bite-sized-editor button:disabled { opacity: .45; cursor: default; }
+.bite-sized-editor button[aria-pressed="true"] { border-color: var(--spot-accent); background: #55412b; }
+.bite-sized-editor fieldset { border: 1px solid #615747; border-radius: 8px; display: grid; gap: 8px; padding: 10px; }
+.bite-sized-editor__coordinates { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
+.bite-sized-editor__actions, .bite-sized-editor__points, .bite-sized-editor footer { display: flex; gap: 6px; flex-wrap: wrap; }
+.bite-sized-editor__status, .bite-sized-editor__hint { font-size: 12px; color: #cfbda1; margin: 3px 0; }
+.bite-sized-editor .bite-sized-editor__check { display: flex; gap: 8px; align-items: center; }
+.bite-sized-editor__check input { width: auto; }
+.bite-sized-editor footer { border-top: 1px solid #615747; padding-top: 10px; }
+.bite-sized-editor footer button:last-child { background: #70562d; }
+.bite-sized-editor--world.is-collapsed { width: 235px; }
+@media (max-width: 760px) {
+  .bite-sized-editor--world { width: min(300px, 83vw); max-height: 72dvh; }
+  .bite-sized-editor--world .bite-sized-editor__body { max-height: 58dvh; }
+  .bite-sized-editor--world.is-collapsed { width: 210px; }
+}

src/ui/useDungeonLeaderboard.ts

@@ -4,13 +4,13 @@ import { fetchDungeonLeaderboard, localDungeonLeaderboard, subscribeDungeonLeade
 import type { DungeonClearFilter, DungeonLeaderboard } from "../game/dungeonRunTypes";
 
 export function useDungeonLeaderboard(dungeonId: string, difficultyId: string, filter: DungeonClearFilter,
-  bossDifficulty = 1, bossId?: string) {
+  bossDifficulty = 1, bossId?: string, spotId?: string, spotRevision?: number) {
   const [offset, setOffset] = useState(0);
   const [revision, setRevision] = useState(0);
   const [state, setState] = useState<{ data: DungeonLeaderboard; scope: LeaderboardScope; loading: boolean }>({
     data: { entries: [], total: 0 }, scope: "world", loading: true,
   });
-  useEffect(() => { setOffset(0); }, [dungeonId, difficultyId, filter, bossDifficulty, bossId]);
+  useEffect(() => { setOffset(0); }, [dungeonId, difficultyId, filter, bossDifficulty, bossId, spotId, spotRevision]);
   useEffect(() => subscribeDungeonLeaderboard(() => setRevision((value) => value + 1)), []);
   useEffect(() => {
     const refresh = () => setRevision((value) => value + 1);
@@ -22,12 +22,12 @@ export function useDungeonLeaderboard(dungeonId: string, difficultyId: string, f
     let live = true;
     const timeout = setTimeout(() => controller.abort(), 8000);
     setState({ data: { entries: [], total: 0 }, scope: "world", loading: true });
-    if (dungeonId) void fetchDungeonLeaderboard(dungeonId, difficultyId, filter, offset, controller.signal, bossDifficulty, bossId)
+    if (dungeonId) void fetchDungeonLeaderboard(dungeonId, difficultyId, filter, offset, controller.signal, bossDifficulty, bossId, spotId, spotRevision)
       .then((data) => { if (live) setState({ data, scope: "world", loading: false }); })
-      .catch(() => { if (live) setState({ data: localDungeonLeaderboard(dungeonId, difficultyId, filter, offset, bossDifficulty, bossId),
+      .catch(() => { if (live) setState({ data: localDungeonLeaderboard(dungeonId, difficultyId, filter, offset, bossDifficulty, bossId, spotId, spotRevision),
         scope: "device", loading: false }); });
     else setState({ data: { entries: [], total: 0 }, scope: "world", loading: false });
     return () => { live = false; controller.abort(); clearTimeout(timeout); };
-  }, [dungeonId, difficultyId, filter, offset, revision, bossDifficulty, bossId]);
+  }, [dungeonId, difficultyId, filter, offset, revision, bossDifficulty, bossId, spotId, spotRevision]);
   return { ...state, offset, setOffset, refresh: () => setRevision((value) => value + 1) };
 }