Release v0.1.9 2026-07-13

.gitignore

@@ -12,3 +12,4 @@ vite.config.d.ts
 !.env.example
 __pycache__/
 *.py[cod]
+/public/basis/

package.json

@@ -1,13 +1,15 @@
 {
   "name": "i-want-to-heal",
   "private": true,
-  "version": "0.1.8",
+  "version": "0.1.9",
   "type": "module",
   "scripts": {
+    "predev": "pnpm assets:sync-basis-transcoder",
     "dev": "vite --host 0.0.0.0",
     "dev:api": "HOST=127.0.0.1 PORT=4174 node server/production.mjs",
     "db:backup": "node scripts/backup-db.mjs",
     "db:init": "node scripts/init-db.mjs",
+    "prebuild": "pnpm assets:sync-basis-transcoder",
     "build": "tsc -b && vite build",
     "android:sync": "pnpm run build && cap sync android",
     "android:sync:truenas": "VITE_API_BASE_URL=https://iwanttoheal.phenomrom.com pnpm run android:sync",
@@ -18,8 +20,12 @@
     "publish:gitea": "python3 scripts/publish_gitea.py",
     "test": "vitest run && node --test server/game-api.test.mjs",
     "test:watch": "vitest",
+    "assets:build-dungeon-kit": "node scripts/build_dungeon_kit.mjs",
+    "assets:build-gravehorn": "node scripts/build_gravehorn_triceratops.mjs",
+    "assets:build-ktx2": "node scripts/build_ktx2_game_assets.mjs",
     "assets:prune-party-animations": "node scripts/prune_party_animations.mjs --write",
-    "assets:import": "node scripts/import-game-asset.mjs"
+    "assets:import": "node scripts/import-game-asset.mjs",
+    "assets:sync-basis-transcoder": "node scripts/sync_basis_transcoder.mjs"
   },
   "dependencies": {
     "@capacitor/android": "8.4.1",
@@ -29,17 +35,20 @@
     "react": "^19.1.1",
     "react-dom": "^19.1.1",
     "three": "^0.179.1",
+    "three-stdlib": "2.36.1",
     "zustand": "^5.0.8"
   },
   "devDependencies": {
     "@capacitor/cli": "8.4.1",
     "@gltf-transform/core": "^4.4.1",
     "@gltf-transform/extensions": "^4.4.1",
+    "@gltf-transform/functions": "4.4.1",
     "@types/react": "^19.1.10",
     "@types/react-dom": "^19.1.7",
     "@types/three": "^0.179.0",
     "@vitejs/plugin-react": "^5.0.2",
     "meshoptimizer": "^1.2.0",
+    "sharp": "0.34.5",
     "typescript": "~5.8.3",
     "vite": "^7.1.3",
     "vitest": "^3.2.4"

pnpm-lock.yaml

@@ -29,6 +29,9 @@ importers:
       three:
         specifier: ^0.179.1
         version: 0.179.1
+      three-stdlib:
+        specifier: 2.36.1
+        version: 2.36.1(three@0.179.1)
       zustand:
         specifier: ^5.0.8
         version: 5.0.14(@types/react@19.2.17)(react@19.2.7)(use-sync-external-store@1.6.0(react@19.2.7))
@@ -42,6 +45,9 @@ importers:
       '@gltf-transform/extensions':
         specifier: ^4.4.1
         version: 4.4.1
+      '@gltf-transform/functions':
+        specifier: 4.4.1
+        version: 4.4.1
       '@types/react':
         specifier: ^19.1.10
         version: 19.2.17
@@ -57,6 +63,9 @@ importers:
       meshoptimizer:
         specifier: ^1.2.0
         version: 1.2.0
+      sharp:
+        specifier: 0.34.5
+        version: 0.34.5
       typescript:
         specifier: ~5.8.3
         version: 5.8.3
@@ -172,6 +181,9 @@ packages:
   '@dimforge/rapier3d-compat@0.12.0':
     resolution: {integrity: sha512-uekIGetywIgopfD97oDL5PfeezkFpNhwlzlaEYNOA0N6ghdsOvh/HYjSMek5Q2O1PYvRSDFcqFVJl4r4ZBwOow==}
 
+  '@emnapi/runtime@1.11.2':
+    resolution: {integrity: sha512-kyOl3X0DuTiT1h2ft8r2fYO8JYtU9a9Xis/zBSiGArNaagCOWx90N1k2wxp18czFDH+OgcWGb5ZP/XMt3dcyPA==}
+
   '@esbuild/aix-ppc64@0.28.1':
     resolution: {integrity: sha512-Svl7tq8k/08+p6CXPpRjQ1fKX+1odH/BQbb48fV6fj3CWHhsoIOoY87w1oHXm0qEpkIK3ZfVgp0hed3XBXzXMQ==}
     engines: {node: '>=18'}
@@ -334,6 +346,162 @@ packages:
   '@gltf-transform/extensions@4.4.1':
     resolution: {integrity: sha512-dZZ9D/NdpNeJUmQKExtISYtd3W6OxU4njk8UI3IKm6j97uVskYQ24BNi2YP40uUpdWPiREsS/DhjNhWAbGU/1A==}
 
+  '@gltf-transform/functions@4.4.1':
+    resolution: {integrity: sha512-CAU6hczuRz7NIEtpn7BARuwVEwRawwIcGqmoMCaEwA4XC+CSUi3xptXuf2zDG/5AftFO7IeQxXl/56rDsck0GQ==}
+
+  '@img/colour@1.1.0':
+    resolution: {integrity: sha512-Td76q7j57o/tLVdgS746cYARfSyxk8iEfRxewL9h4OMzYhbW4TAcppl0mT4eyqXddh6L/jwoM75mo7ixa/pCeQ==}
+    engines: {node: '>=18'}
+
+  '@img/sharp-darwin-arm64@0.34.5':
+    resolution: {integrity: sha512-imtQ3WMJXbMY4fxb/Ndp6HBTNVtWCUI0WdobyheGf5+ad6xX8VIDO8u2xE4qc/fr08CKG/7dDseFtn6M6g/r3w==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [arm64]
+    os: [darwin]
+
+  '@img/sharp-darwin-x64@0.34.5':
+    resolution: {integrity: sha512-YNEFAF/4KQ/PeW0N+r+aVVsoIY0/qxxikF2SWdp+NRkmMB7y9LBZAVqQ4yhGCm/H3H270OSykqmQMKLBhBJDEw==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [x64]
+    os: [darwin]
+
+  '@img/sharp-libvips-darwin-arm64@1.2.4':
+    resolution: {integrity: sha512-zqjjo7RatFfFoP0MkQ51jfuFZBnVE2pRiaydKJ1G/rHZvnsrHAOcQALIi9sA5co5xenQdTugCvtb1cuf78Vf4g==}
+    cpu: [arm64]
+    os: [darwin]
+
+  '@img/sharp-libvips-darwin-x64@1.2.4':
+    resolution: {integrity: sha512-1IOd5xfVhlGwX+zXv2N93k0yMONvUlANylbJw1eTah8K/Jtpi15KC+WSiaX/nBmbm2HxRM1gZ0nSdjSsrZbGKg==}
+    cpu: [x64]
+    os: [darwin]
+
+  '@img/sharp-libvips-linux-arm64@1.2.4':
+    resolution: {integrity: sha512-excjX8DfsIcJ10x1Kzr4RcWe1edC9PquDRRPx3YVCvQv+U5p7Yin2s32ftzikXojb1PIFc/9Mt28/y+iRklkrw==}
+    cpu: [arm64]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-libvips-linux-arm@1.2.4':
+    resolution: {integrity: sha512-bFI7xcKFELdiNCVov8e44Ia4u2byA+l3XtsAj+Q8tfCwO6BQ8iDojYdvoPMqsKDkuoOo+X6HZA0s0q11ANMQ8A==}
+    cpu: [arm]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-libvips-linux-ppc64@1.2.4':
+    resolution: {integrity: sha512-FMuvGijLDYG6lW+b/UvyilUWu5Ayu+3r2d1S8notiGCIyYU/76eig1UfMmkZ7vwgOrzKzlQbFSuQfgm7GYUPpA==}
+    cpu: [ppc64]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-libvips-linux-riscv64@1.2.4':
+    resolution: {integrity: sha512-oVDbcR4zUC0ce82teubSm+x6ETixtKZBh/qbREIOcI3cULzDyb18Sr/Wcyx7NRQeQzOiHTNbZFF1UwPS2scyGA==}
+    cpu: [riscv64]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-libvips-linux-s390x@1.2.4':
+    resolution: {integrity: sha512-qmp9VrzgPgMoGZyPvrQHqk02uyjA0/QrTO26Tqk6l4ZV0MPWIW6LTkqOIov+J1yEu7MbFQaDpwdwJKhbJvuRxQ==}
+    cpu: [s390x]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-libvips-linux-x64@1.2.4':
+    resolution: {integrity: sha512-tJxiiLsmHc9Ax1bz3oaOYBURTXGIRDODBqhveVHonrHJ9/+k89qbLl0bcJns+e4t4rvaNBxaEZsFtSfAdquPrw==}
+    cpu: [x64]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-libvips-linuxmusl-arm64@1.2.4':
+    resolution: {integrity: sha512-FVQHuwx1IIuNow9QAbYUzJ+En8KcVm9Lk5+uGUQJHaZmMECZmOlix9HnH7n1TRkXMS0pGxIJokIVB9SuqZGGXw==}
+    cpu: [arm64]
+    os: [linux]
+    libc: [musl]
+
+  '@img/sharp-libvips-linuxmusl-x64@1.2.4':
+    resolution: {integrity: sha512-+LpyBk7L44ZIXwz/VYfglaX/okxezESc6UxDSoyo2Ks6Jxc4Y7sGjpgU9s4PMgqgjj1gZCylTieNamqA1MF7Dg==}
+    cpu: [x64]
+    os: [linux]
+    libc: [musl]
+
+  '@img/sharp-linux-arm64@0.34.5':
+    resolution: {integrity: sha512-bKQzaJRY/bkPOXyKx5EVup7qkaojECG6NLYswgktOZjaXecSAeCWiZwwiFf3/Y+O1HrauiE3FVsGxFg8c24rZg==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [arm64]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-linux-arm@0.34.5':
+    resolution: {integrity: sha512-9dLqsvwtg1uuXBGZKsxem9595+ujv0sJ6Vi8wcTANSFpwV/GONat5eCkzQo/1O6zRIkh0m/8+5BjrRr7jDUSZw==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [arm]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-linux-ppc64@0.34.5':
+    resolution: {integrity: sha512-7zznwNaqW6YtsfrGGDA6BRkISKAAE1Jo0QdpNYXNMHu2+0dTrPflTLNkpc8l7MUP5M16ZJcUvysVWWrMefZquA==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [ppc64]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-linux-riscv64@0.34.5':
+    resolution: {integrity: sha512-51gJuLPTKa7piYPaVs8GmByo7/U7/7TZOq+cnXJIHZKavIRHAP77e3N2HEl3dgiqdD/w0yUfiJnII77PuDDFdw==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [riscv64]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-linux-s390x@0.34.5':
+    resolution: {integrity: sha512-nQtCk0PdKfho3eC5MrbQoigJ2gd1CgddUMkabUj+rBevs8tZ2cULOx46E7oyX+04WGfABgIwmMC0VqieTiR4jg==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [s390x]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-linux-x64@0.34.5':
+    resolution: {integrity: sha512-MEzd8HPKxVxVenwAa+JRPwEC7QFjoPWuS5NZnBt6B3pu7EG2Ge0id1oLHZpPJdn3OQK+BQDiw9zStiHBTJQQQQ==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [x64]
+    os: [linux]
+    libc: [glibc]
+
+  '@img/sharp-linuxmusl-arm64@0.34.5':
+    resolution: {integrity: sha512-fprJR6GtRsMt6Kyfq44IsChVZeGN97gTD331weR1ex1c1rypDEABN6Tm2xa1wE6lYb5DdEnk03NZPqA7Id21yg==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [arm64]
+    os: [linux]
+    libc: [musl]
+
+  '@img/sharp-linuxmusl-x64@0.34.5':
+    resolution: {integrity: sha512-Jg8wNT1MUzIvhBFxViqrEhWDGzqymo3sV7z7ZsaWbZNDLXRJZoRGrjulp60YYtV4wfY8VIKcWidjojlLcWrd8Q==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [x64]
+    os: [linux]
+    libc: [musl]
+
+  '@img/sharp-wasm32@0.34.5':
+    resolution: {integrity: sha512-OdWTEiVkY2PHwqkbBI8frFxQQFekHaSSkUIJkwzclWZe64O1X4UlUjqqqLaPbUpMOQk6FBu/HtlGXNblIs0huw==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [wasm32]
+
+  '@img/sharp-win32-arm64@0.34.5':
+    resolution: {integrity: sha512-WQ3AgWCWYSb2yt+IG8mnC6Jdk9Whs7O0gxphblsLvdhSpSTtmu69ZG1Gkb6NuvxsNACwiPV6cNSZNzt0KPsw7g==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [arm64]
+    os: [win32]
+
+  '@img/sharp-win32-ia32@0.34.5':
+    resolution: {integrity: sha512-FV9m/7NmeCmSHDD5j4+4pNI8Cp3aW+JvLoXcTUo0IqyjSfAZJ8dIUmijx1qaJsIiU+Hosw6xM5KijAWRJCSgNg==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [ia32]
+    os: [win32]
+
+  '@img/sharp-win32-x64@0.34.5':
+    resolution: {integrity: sha512-+29YMsqY2/9eFEiW93eqWnuLcWcufowXewwSNIT6UwZdUUCrM3oFjMWH/Z6/TMmb4hlFenmfAVbpWeup2jryCw==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+    cpu: [x64]
+    os: [win32]
+
   '@ionic/cli-framework-output@2.2.8':
     resolution: {integrity: sha512-TshtaFQsovB4NWRBydbNFawql6yul7d5bMiW1WYYf17hd99V6xdDdk3vtF51bw6sLkxON3bDQpWsnUc9/hVo3g==}
     engines: {node: '>=16.0.0'}
@@ -601,6 +769,9 @@ packages:
   '@types/fs-extra@8.1.5':
     resolution: {integrity: sha512-0dzKcwO+S8s2kuF5Z9oUWatQJj5Uq/iqphEtE3GQJVRRYm/tD1LglU2UnXi2A8jLq5umkGouOXOR9y0n613ZwQ==}
 
+  '@types/ndarray@1.0.14':
+    resolution: {integrity: sha512-oANmFZMnFQvb219SSBIhI1Ih/r4CvHDOzkWyJS/XRqkMrGH5/kaPSA1hQhdIBzouaE+5KpE/f5ylI9cujmckQg==}
+
   '@types/node@26.1.1':
     resolution: {integrity: sha512-nxAkRSVkN1Y0JC1W8ky/fTfkGsMmcrRsbx+3XoZE+rMOX71kLYTV7fLXpqud1GpbpP5TuffXFqfX7fH2GgZREw==}
 
@@ -791,6 +962,9 @@ packages:
   csstype@3.2.3:
     resolution: {integrity: sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==}
 
+  cwise-compiler@1.1.3:
+    resolution: {integrity: sha512-WXlK/m+Di8DMMcCjcWr4i+XzcQra9eCdXIJrgh4TUgh0pIS/yJduLxS9JgefsHJ/YVLdgPtXm9r62W92MvanEQ==}
+
   debug@4.4.3:
     resolution: {integrity: sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA==}
     engines: {node: '>=6.0'}
@@ -811,6 +985,10 @@ packages:
   detect-gpu@5.0.70:
     resolution: {integrity: sha512-bqerEP1Ese6nt3rFkwPnGbsUF9a4q+gMmpTVVOEzoCyeCc+y7/RvJnQZJx1JwhgQI5Ntg0Kgat8Uu7XpBqnz1w==}
 
+  detect-libc@2.1.2:
+    resolution: {integrity: sha512-Btj2BOOO83o3WyH59e8MgXsxEQVcarkUOpEYrubB0urwnN10yQ364rsiByU11nZlqWYZm05i/of7io4mzihBtQ==}
+    engines: {node: '>=8'}
+
   draco3d@1.5.7:
     resolution: {integrity: sha512-m6WCKt/erDXcw+70IJXnG7M3awwQPAsZvJGX5zY7beBqpELw6RDGkYVU0W43AFxye4pDZ5i2Lbyc/NNGqwjUVQ==}
 
@@ -908,6 +1086,12 @@ packages:
     resolution: {integrity: sha512-X7rqawQBvfdjS10YU1y1YVreA3SsLrW9dX2CewP2EbBJM4ypVNLDkO5y04gejPwKIY9lR+7r9gn3rFPt/kmWFg==}
     engines: {node: ^14.17.0 || ^16.13.0 || >=18.0.0}
 
+  iota-array@1.0.0:
+    resolution: {integrity: sha512-pZ2xT+LOHckCatGQ3DcG/a+QuEqvoxqkiL7tvE8nn3uuu+f6i1TtpB5/FtWFbxUuVr5PZCx8KskuGatbJDXOWA==}
+
+  is-buffer@1.1.6:
+    resolution: {integrity: sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==}
+
   is-docker@2.2.1:
     resolution: {integrity: sha512-F+i2BKsFrH66iaUFc0woD8sLy8getkwTwtOBjvs56Cx4CgJDeKQeqfz8wAYiSb8JOprWhHH5p77PbmYCvvUuXQ==}
     engines: {node: '>=8'}
@@ -1020,6 +1204,18 @@ packages:
     engines: {node: '>=16.0.0'}
     hasBin: true
 
+  ndarray-lanczos@0.3.0:
+    resolution: {integrity: sha512-5kBmmG3Zvyj77qxIAC4QFLKuYdDIBJwCG+DukT6jQHNa1Ft74/hPH1z5mbQXeHBt8yvGPBGVrr3wEOdJPYYZYg==}
+
+  ndarray-ops@1.2.2:
+    resolution: {integrity: sha512-BppWAFRjMYF7N/r6Ie51q6D4fs0iiGmeXIACKY66fLpnwIui3Wc3CXiD/30mgLbDjPpSLrsqcp3Z62+IcHZsDw==}
+
+  ndarray-pixels@5.0.1:
+    resolution: {integrity: sha512-IBtrpefpqlI8SPDCGjXk4v5NV5z7r3JSuCbfuEEXaM0vrOJtNGgYUa4C3Lt5H+qWdYF4BCPVFsnXhNC7QvZwkw==}
+
+  ndarray@1.0.19:
+    resolution: {integrity: sha512-B4JHA4vdyZU30ELBw3g7/p9bZupyew5a7tX1Y/gGeF2hafrPaQZhgrGQfsvgfYbgdFZjYwuEcnaobeM/WMW+HQ==}
+
   node-releases@2.0.50:
     resolution: {integrity: sha512-J6l92tKHX6w8Jy5nO1Vuc01NoIiRGi/d6qBKVxh+IQ8Cr3b6HbVNfKiF8ZpFKufTwpwxMmce2W3iQZ861ZRyTg==}
     engines: {node: '>=18'}
@@ -1139,6 +1335,10 @@ packages:
     engines: {node: '>=10'}
     hasBin: true
 
+  sharp@0.34.5:
+    resolution: {integrity: sha512-Ou9I5Ft9WNcCbXrU9cMgPBcCK8LiwLqcbywW3t4oDV37n1pzpuNLsYiAV8eODnjbtQlSDwZ2cUEeQz4E54Hltg==}
+    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
+
   shebang-command@2.0.0:
     resolution: {integrity: sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA==}
     engines: {node: '>=8'}
@@ -1275,6 +1475,9 @@ packages:
   undici-types@8.3.0:
     resolution: {integrity: sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ==}
 
+  uniq@1.0.1:
+    resolution: {integrity: sha512-Gw+zz50YNKPDKXs+9d+aKAjVwpjNwqzvNpLigIruT4HA9lMZNdMqs9x07kKHB/L9WRzqp4+DlTU5s4wG2esdoA==}
+
   universalify@2.0.1:
     resolution: {integrity: sha512-gptHNQghINnc/vTGIk0SOFGFNXw7JVrlRUtConJRlvaw6DuX0wO5Jeko9sWrMBhh+PsYAZ7oXAiOnf/UKogyiw==}
     engines: {node: '>= 10.0.0'}
@@ -1597,6 +1800,11 @@ snapshots:
 
   '@dimforge/rapier3d-compat@0.12.0': {}
 
+  '@emnapi/runtime@1.11.2':
+    dependencies:
+      tslib: 2.8.1
+    optional: true
+
   '@esbuild/aix-ppc64@0.28.1':
     optional: true
 
@@ -1684,6 +1892,111 @@ snapshots:
       '@gltf-transform/core': 4.4.1
       ktx-parse: 1.1.0
 
+  '@gltf-transform/functions@4.4.1':
+    dependencies:
+      '@gltf-transform/core': 4.4.1
+      '@gltf-transform/extensions': 4.4.1
+      ktx-parse: 1.1.0
+      ndarray: 1.0.19
+      ndarray-lanczos: 0.3.0
+      ndarray-pixels: 5.0.1
+
+  '@img/colour@1.1.0': {}
+
+  '@img/sharp-darwin-arm64@0.34.5':
+    optionalDependencies:
+      '@img/sharp-libvips-darwin-arm64': 1.2.4
+    optional: true
+
+  '@img/sharp-darwin-x64@0.34.5':
+    optionalDependencies:
+      '@img/sharp-libvips-darwin-x64': 1.2.4
+    optional: true
+
+  '@img/sharp-libvips-darwin-arm64@1.2.4':
+    optional: true
+
+  '@img/sharp-libvips-darwin-x64@1.2.4':
+    optional: true
+
+  '@img/sharp-libvips-linux-arm64@1.2.4':
+    optional: true
+
+  '@img/sharp-libvips-linux-arm@1.2.4':
+    optional: true
+
+  '@img/sharp-libvips-linux-ppc64@1.2.4':
+    optional: true
+
+  '@img/sharp-libvips-linux-riscv64@1.2.4':
+    optional: true
+
+  '@img/sharp-libvips-linux-s390x@1.2.4':
+    optional: true
+
+  '@img/sharp-libvips-linux-x64@1.2.4':
+    optional: true
+
+  '@img/sharp-libvips-linuxmusl-arm64@1.2.4':
+    optional: true
+
+  '@img/sharp-libvips-linuxmusl-x64@1.2.4':
+    optional: true
+
+  '@img/sharp-linux-arm64@0.34.5':
+    optionalDependencies:
+      '@img/sharp-libvips-linux-arm64': 1.2.4
+    optional: true
+
+  '@img/sharp-linux-arm@0.34.5':
+    optionalDependencies:
+      '@img/sharp-libvips-linux-arm': 1.2.4
+    optional: true
+
+  '@img/sharp-linux-ppc64@0.34.5':
+    optionalDependencies:
+      '@img/sharp-libvips-linux-ppc64': 1.2.4
+    optional: true
+
+  '@img/sharp-linux-riscv64@0.34.5':
+    optionalDependencies:
+      '@img/sharp-libvips-linux-riscv64': 1.2.4
+    optional: true
+
+  '@img/sharp-linux-s390x@0.34.5':
+    optionalDependencies:
+      '@img/sharp-libvips-linux-s390x': 1.2.4
+    optional: true
+
+  '@img/sharp-linux-x64@0.34.5':
+    optionalDependencies:
+      '@img/sharp-libvips-linux-x64': 1.2.4
+    optional: true
+
+  '@img/sharp-linuxmusl-arm64@0.34.5':
+    optionalDependencies:
+      '@img/sharp-libvips-linuxmusl-arm64': 1.2.4
+    optional: true
+
+  '@img/sharp-linuxmusl-x64@0.34.5':
+    optionalDependencies:
+      '@img/sharp-libvips-linuxmusl-x64': 1.2.4
+    optional: true
+
+  '@img/sharp-wasm32@0.34.5':
+    dependencies:
+      '@emnapi/runtime': 1.11.2
+    optional: true
+
+  '@img/sharp-win32-arm64@0.34.5':
+    optional: true
+
+  '@img/sharp-win32-ia32@0.34.5':
+    optional: true
+
+  '@img/sharp-win32-x64@0.34.5':
+    optional: true
+
   '@ionic/cli-framework-output@2.2.8':
     dependencies:
       '@ionic/utils-terminal': 2.3.5
@@ -1958,6 +2271,8 @@ snapshots:
     dependencies:
       '@types/node': 26.1.1
 
+  '@types/ndarray@1.0.14': {}
+
   '@types/node@26.1.1':
     dependencies:
       undici-types: 8.3.0
@@ -2146,6 +2461,10 @@ snapshots:
 
   csstype@3.2.3: {}
 
+  cwise-compiler@1.1.3:
+    dependencies:
+      uniq: 1.0.1
+
   debug@4.4.3:
     dependencies:
       ms: 2.1.3
@@ -2158,6 +2477,8 @@ snapshots:
     dependencies:
       webgl-constants: 1.1.1
 
+  detect-libc@2.1.2: {}
+
   draco3d@1.5.7: {}
 
   electron-to-chromium@1.5.389: {}
@@ -2259,6 +2580,10 @@ snapshots:
 
   ini@4.1.3: {}
 
+  iota-array@1.0.0: {}
+
+  is-buffer@1.1.6: {}
+
   is-docker@2.2.1: {}
 
   is-fullwidth-code-point@3.0.0: {}
@@ -2357,6 +2682,27 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  ndarray-lanczos@0.3.0:
+    dependencies:
+      '@types/ndarray': 1.0.14
+      ndarray: 1.0.19
+
+  ndarray-ops@1.2.2:
+    dependencies:
+      cwise-compiler: 1.1.3
+
+  ndarray-pixels@5.0.1:
+    dependencies:
+      '@types/ndarray': 1.0.14
+      ndarray: 1.0.19
+      ndarray-ops: 1.2.2
+      sharp: 0.34.5
+
+  ndarray@1.0.19:
+    dependencies:
+      iota-array: 1.0.0
+      is-buffer: 1.1.6
+
   node-releases@2.0.50: {}
 
   open@8.4.2:
@@ -2481,6 +2827,37 @@ snapshots:
 
   semver@7.8.5: {}
 
+  sharp@0.34.5:
+    dependencies:
+      '@img/colour': 1.1.0
+      detect-libc: 2.1.2
+      semver: 7.8.5
+    optionalDependencies:
+      '@img/sharp-darwin-arm64': 0.34.5
+      '@img/sharp-darwin-x64': 0.34.5
+      '@img/sharp-libvips-darwin-arm64': 1.2.4
+      '@img/sharp-libvips-darwin-x64': 1.2.4
+      '@img/sharp-libvips-linux-arm': 1.2.4
+      '@img/sharp-libvips-linux-arm64': 1.2.4
+      '@img/sharp-libvips-linux-ppc64': 1.2.4
+      '@img/sharp-libvips-linux-riscv64': 1.2.4
+      '@img/sharp-libvips-linux-s390x': 1.2.4
+      '@img/sharp-libvips-linux-x64': 1.2.4
+      '@img/sharp-libvips-linuxmusl-arm64': 1.2.4
+      '@img/sharp-libvips-linuxmusl-x64': 1.2.4
+      '@img/sharp-linux-arm': 0.34.5
+      '@img/sharp-linux-arm64': 0.34.5
+      '@img/sharp-linux-ppc64': 0.34.5
+      '@img/sharp-linux-riscv64': 0.34.5
+      '@img/sharp-linux-s390x': 0.34.5
+      '@img/sharp-linux-x64': 0.34.5
+      '@img/sharp-linuxmusl-arm64': 0.34.5
+      '@img/sharp-linuxmusl-x64': 0.34.5
+      '@img/sharp-wasm32': 0.34.5
+      '@img/sharp-win32-arm64': 0.34.5
+      '@img/sharp-win32-ia32': 0.34.5
+      '@img/sharp-win32-x64': 0.34.5
+
   shebang-command@2.0.0:
     dependencies:
       shebang-regex: 3.0.0
@@ -2609,6 +2986,8 @@ snapshots:
 
   undici-types@8.3.0: {}
 
+  uniq@1.0.1: {}
+
   universalify@2.0.1: {}
 
   untildify@4.0.0: {}

pnpm-workspace.yaml

@@ -1,2 +1,3 @@
 allowBuilds:
   esbuild: true
+  sharp: true

scripts/build_dungeon_kit.mjs

@@ -0,0 +1,80 @@
+import { access } from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import {
+  EXTMeshoptCompression,
+} from "@gltf-transform/extensions";
+import { dedup, mergeDocuments, prune, unpartition } from "@gltf-transform/functions";
+import { createGameAssetIO, convertDocumentTexturesToKtx2 } from "./lib/ktx2.mjs";
+
+const repositoryRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const sourceDirectory = path.join(
+  repositoryRoot,
+  "game_assets",
+  "models",
+  "original",
+  "environment",
+  "kaykit-dungeon",
+);
+const outputPath = path.join(sourceDirectory, "dungeon-kit-uastc.glb");
+const sources = ["pillar-decorated.glb", "wall-pillar.glb", "torch-lit.glb"];
+const expectedMeshNames = ["pillar_decorated", "wall_pillar", "torch_lit"];
+await Promise.all(sources.map((source) => access(path.join(sourceDirectory, source))));
+const io = await createGameAssetIO();
+
+const documents = await Promise.all(sources.map((source) => io.read(path.join(sourceDirectory, source))));
+const document = documents[0];
+const destinationScene = document.getRoot().listScenes()[0].setName("dungeon_kit");
+
+for (const sourceDocument of documents.slice(1)) {
+  const sourceScene = sourceDocument.getRoot().listScenes()[0];
+  const propertyMap = mergeDocuments(document, sourceDocument);
+  const copiedScene = propertyMap.get(sourceScene);
+  if (!copiedScene) throw new Error(`Could not merge scene from ${sourceScene.getName() || "unnamed source"}.`);
+  for (const child of [...copiedScene.listChildren()]) destinationScene.addChild(child);
+  copiedScene.dispose();
+}
+
+await document.transform(
+  dedup({ keepUniqueNames: false }),
+  unpartition(),
+  prune({ keepSolidTextures: true }),
+);
+
+const root = document.getRoot();
+const meshNames = root.listMeshes().map((mesh) => mesh.getName()).sort();
+const expectedSorted = [...expectedMeshNames].sort();
+if (JSON.stringify(meshNames) !== JSON.stringify(expectedSorted)) {
+  throw new Error(`Dungeon kit mesh names changed: expected ${expectedSorted.join(", ")}; received ${meshNames.join(", ")}.`);
+}
+if (root.listTextures().length !== 1) {
+  throw new Error(`Dungeon kit must contain exactly one shared texture; received ${root.listTextures().length}.`);
+}
+if (root.listMaterials().length !== 1) {
+  throw new Error(`Dungeon kit must contain exactly one shared material; received ${root.listMaterials().length}.`);
+}
+
+await convertDocumentTexturesToKtx2(document, "iwt-dungeon-kit-");
+const meshoptExtension = root.listExtensionsUsed()
+  .find((extension) => extension.extensionName === EXTMeshoptCompression.EXTENSION_NAME)
+  ?? document.createExtension(EXTMeshoptCompression);
+meshoptExtension
+  .setRequired(true)
+  .setEncoderOptions({ method: EXTMeshoptCompression.EncoderMethod.QUANTIZE });
+
+await io.write(outputPath, document);
+
+const outputDocument = await io.read(outputPath);
+const outputRoot = outputDocument.getRoot();
+const outputTexture = outputRoot.listTextures()[0];
+if (
+  outputRoot.listMeshes().length !== 3
+  || outputRoot.listMaterials().length !== 1
+  || outputRoot.listTextures().length !== 1
+  || outputTexture.getMimeType() !== "image/ktx2"
+) {
+  throw new Error("Generated dungeon kit failed structural validation.");
+}
+
+console.log(`Built ${path.relative(repositoryRoot, outputPath)}`);
+console.log("Meshes: pillar_decorated, wall_pillar, torch_lit; shared textures: 1; encoding: KTX2/UASTC.");

scripts/build_gravehorn_triceratops.mjs

@@ -0,0 +1,170 @@
+import { access, readFile, stat } from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { Box3, Vector3 } from "three";
+import { GLTFLoader } from "three/examples/jsm/loaders/GLTFLoader.js";
+import { MeshoptDecoder, MeshoptEncoder } from "meshoptimizer";
+import { dedup, meshopt, prune, resample } from "@gltf-transform/functions";
+import { createGameAssetIO, convertDocumentTexturesToKtx2 } from "./lib/ktx2.mjs";
+
+const repositoryRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const assetDirectory = path.join(repositoryRoot, "game_assets", "models", "sketchfab-opensource");
+const sourcePath = path.join(assetDirectory, "animated_triceratops_skeleton.glb");
+const legacyPath = path.join(assetDirectory, "gravehorn-triceratops.glb");
+const optimizedPath = path.join(assetDirectory, "gravehorn-triceratops-uastc.glb");
+const requiredClips = [
+  "Armature|RiseUp",
+  "Armature|Roar",
+  "Armature|Walk",
+  "Armature|Fall",
+  "Gravehorn|Idle",
+];
+const unusedClips = new Set(["Armature|IdleGround", "Armature|RoarToWalk"]);
+
+function sortedNames(properties) {
+  return properties.map((property) => property.getName()).sort();
+}
+
+function addUprightIdle(document) {
+  const walk = document.getRoot().listAnimations().find((animation) => animation.getName() === "Armature|Walk");
+  const buffer = document.getRoot().listBuffers()[0];
+  if (!walk || !buffer) throw new Error("Gravehorn source is missing its Walk animation or binary buffer.");
+
+  const idle = document.createAnimation("Gravehorn|Idle");
+  for (const [index, sourceChannel] of walk.listChannels().entries()) {
+    const sourceSampler = sourceChannel.getSampler();
+    const sourceOutput = sourceSampler?.getOutput();
+    const sourceValues = sourceOutput?.getArray();
+    const targetNode = sourceChannel.getTargetNode();
+    const targetPath = sourceChannel.getTargetPath();
+    if (!sourceSampler || !sourceOutput || !sourceValues || !targetNode || !targetPath) {
+      throw new Error(`Gravehorn Walk channel ${index} is incomplete.`);
+    }
+    if (sourceSampler.getInterpolation() === "CUBICSPLINE") {
+      throw new Error("Gravehorn upright idle builder does not support cubic animation tracks.");
+    }
+
+    const elementSize = sourceOutput.getElementSize();
+    const values = new sourceValues.constructor(elementSize * 2);
+    values.set(sourceValues.subarray(0, elementSize), 0);
+    values.set(sourceValues.subarray(0, elementSize), elementSize);
+    const input = document.createAccessor(`gravehorn_idle_time_${index}`)
+      .setType("SCALAR")
+      .setArray(new Float32Array([0, 1]))
+      .setBuffer(buffer);
+    const output = document.createAccessor(`gravehorn_idle_value_${index}`)
+      .setType(sourceOutput.getType())
+      .setNormalized(sourceOutput.getNormalized())
+      .setArray(values)
+      .setBuffer(buffer);
+    const sampler = document.createAnimationSampler(`gravehorn_idle_sampler_${index}`)
+      .setInput(input)
+      .setOutput(output)
+      .setInterpolation("LINEAR");
+    const channel = document.createAnimationChannel(`gravehorn_idle_channel_${index}`)
+      .setSampler(sampler)
+      .setTargetNode(targetNode)
+      .setTargetPath(targetPath);
+    idle.addSampler(sampler).addChannel(channel);
+  }
+}
+
+async function runtimeBounds(assetPath) {
+  const data = await readFile(assetPath);
+  const arrayBuffer = data.buffer.slice(data.byteOffset, data.byteOffset + data.byteLength);
+  globalThis.self ??= globalThis;
+  globalThis.createImageBitmap ??= async () => ({ width: 1, height: 1, close() {} });
+  const gltf = await new GLTFLoader().setMeshoptDecoder(MeshoptDecoder).parseAsync(arrayBuffer, "");
+  gltf.scene.updateMatrixWorld(true);
+  const bounds = new Box3().setFromObject(gltf.scene);
+  return {
+    min: bounds.min.toArray(),
+    max: bounds.max.toArray(),
+    center: bounds.getCenter(new Vector3()).toArray(),
+  };
+}
+
+function validateStructure(document, { optimized }) {
+  const root = document.getRoot();
+  const material = root.listMaterials()[0];
+  const clips = sortedNames(root.listAnimations());
+  const textureMimeTypes = root.listTextures().map((texture) => texture.getMimeType());
+  const extensionNames = new Set(root.listExtensionsUsed().map((extension) => extension.extensionName));
+
+  if (JSON.stringify(clips) !== JSON.stringify([...requiredClips].sort())) {
+    throw new Error(`Gravehorn animation clips changed: ${clips.join(", ")}.`);
+  }
+  if (root.listMeshes().length !== 1 || root.listMaterials().length !== 1 || root.listTextures().length !== 3 || root.listSkins().length !== 1) {
+    throw new Error("Gravehorn must contain one mesh, one material, three textures, and one skin.");
+  }
+  if (root.listSkins()[0].listJoints().length !== 140) {
+    throw new Error(`Gravehorn joint count changed: ${root.listSkins()[0].listJoints().length}.`);
+  }
+  if (material.getDoubleSided()) {
+    throw new Error("Gravehorn material must keep backface culling enabled.");
+  }
+  if (!extensionNames.has("EXT_meshopt_compression")) {
+    throw new Error("Gravehorn is missing Meshopt compression.");
+  }
+  if (optimized && (textureMimeTypes.some((mimeType) => mimeType !== "image/ktx2") || !extensionNames.has("KHR_texture_basisu"))) {
+    throw new Error("Optimized Gravehorn asset must contain only KTX2 textures.");
+  }
+  if (!optimized && textureMimeTypes.some((mimeType) => mimeType === "image/ktx2")) {
+    throw new Error("Legacy Gravehorn fallback must retain standard textures.");
+  }
+}
+
+await access(sourcePath);
+await MeshoptDecoder.ready;
+await MeshoptEncoder.ready;
+const io = await createGameAssetIO();
+const document = await io.read(sourcePath);
+const root = document.getRoot();
+const scene = root.listScenes()[0].setName("gravehorn_triceratops");
+const sceneRoot = scene.listChildren()[0];
+const sourceBounds = await runtimeBounds(sourcePath);
+const sourceTranslation = sceneRoot.getTranslation();
+
+sceneRoot.setTranslation([
+  sourceTranslation[0] - sourceBounds.center[0],
+  sourceTranslation[1] - sourceBounds.min[1],
+  sourceTranslation[2] - sourceBounds.center[2],
+]);
+root.listMeshes()[0].setName("gravehorn_triceratops");
+root.listMaterials()[0]
+  .setName("gravehorn_bone")
+  .setDoubleSided(false)
+  .setEmissiveFactor([0.1, 0.06, 0.02]);
+addUprightIdle(document);
+for (const animation of root.listAnimations()) {
+  if (!unusedClips.has(animation.getName())) continue;
+  for (const channel of animation.listChannels()) channel.dispose();
+  for (const sampler of animation.listSamplers()) sampler.dispose();
+  animation.dispose();
+}
+
+await document.transform(
+  resample({ tolerance: 1e-4 }),
+  dedup({ keepUniqueNames: true }),
+  prune({ keepLeaves: true, keepSolidTextures: true }),
+  meshopt({ encoder: MeshoptEncoder, level: "high" }),
+);
+
+await io.write(legacyPath, document);
+const legacyDocument = await io.read(legacyPath);
+validateStructure(legacyDocument, { optimized: false });
+const legacyBounds = await runtimeBounds(legacyPath);
+if (Math.abs(legacyBounds.min[1]) > 0.015 || Math.abs(legacyBounds.center[0]) > 0.015 || Math.abs(legacyBounds.center[2]) > 0.015) {
+  throw new Error(`Gravehorn pivot is not grounded and centered: minY=${legacyBounds.min[1]}, centerX=${legacyBounds.center[0]}, centerZ=${legacyBounds.center[2]}.`);
+}
+
+const optimizedDocument = await io.read(legacyPath);
+await convertDocumentTexturesToKtx2(optimizedDocument, "iwt-gravehorn-");
+await io.write(optimizedPath, optimizedDocument);
+validateStructure(await io.read(optimizedPath), { optimized: true });
+
+const sourceSize = (await stat(sourcePath)).size;
+const legacySize = (await stat(legacyPath)).size;
+const optimizedSize = (await stat(optimizedPath)).size;
+console.log(`Built ${path.relative(repositoryRoot, legacyPath)} (${sourceSize} -> ${legacySize} bytes).`);
+console.log(`Built ${path.relative(repositoryRoot, optimizedPath)} (${optimizedSize} bytes, KTX2/UASTC).`);

scripts/build_ktx2_game_assets.mjs

@@ -0,0 +1,70 @@
+import { access } from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { createGameAssetIO, convertDocumentTexturesToKtx2 } from "./lib/ktx2.mjs";
+
+const repositoryRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const sourceRoot = path.join(repositoryRoot, "game_assets");
+const sourceAssets = [
+  "models/claudecraft/chars/players/druid.glb",
+  "models/claudecraft/chars/players/knight.glb",
+  "models/claudecraft/chars/players/mage.glb",
+  "models/claudecraft/chars/players/ranger.glb",
+  "models/claudecraft/chars/players/rogue.glb",
+  "models/claudecraft/weapons/adv_dagger.glb",
+  "models/claudecraft/weapons/adv_druid_staff.glb",
+  "models/claudecraft/weapons/adv_sword_1handed.glb",
+  "models/claudecraft/weapons/adv_wand.glb",
+  "models/claudecraft/weapons/crossbow_2handed.glb",
+  "models/claudecraft/weapons/shield_badge.glb",
+  "models/claudecraft/weapons/spellbook_open.glb",
+];
+
+function optimizedPath(sourcePath) {
+  return sourcePath.replace(/\.glb$/, "-uastc.glb");
+}
+
+function sortedNames(properties) {
+  return properties.map((property) => property.getName()).sort();
+}
+
+const io = await createGameAssetIO();
+for (const relativePath of sourceAssets) {
+  const inputPath = path.join(sourceRoot, relativePath);
+  const outputRelativePath = optimizedPath(relativePath);
+  const outputPath = path.join(sourceRoot, outputRelativePath);
+  await access(inputPath);
+
+  const document = await io.read(inputPath);
+  const sourceRootProperties = document.getRoot();
+  const expected = {
+    animations: sortedNames(sourceRootProperties.listAnimations()),
+    materials: sortedNames(sourceRootProperties.listMaterials()),
+    meshes: sortedNames(sourceRootProperties.listMeshes()),
+    nodes: sortedNames(sourceRootProperties.listNodes()),
+    scenes: sortedNames(sourceRootProperties.listScenes()),
+    textureCount: sourceRootProperties.listTextures().length,
+  };
+
+  await convertDocumentTexturesToKtx2(document, "iwt-ktx2-");
+  await io.write(outputPath, document);
+
+  const outputDocument = await io.read(outputPath);
+  const outputRoot = outputDocument.getRoot();
+  const actual = {
+    animations: sortedNames(outputRoot.listAnimations()),
+    materials: sortedNames(outputRoot.listMaterials()),
+    meshes: sortedNames(outputRoot.listMeshes()),
+    nodes: sortedNames(outputRoot.listNodes()),
+    scenes: sortedNames(outputRoot.listScenes()),
+    textureCount: outputRoot.listTextures().length,
+  };
+  if (
+    JSON.stringify(actual) !== JSON.stringify(expected)
+    || outputRoot.listTextures().some((texture) => texture.getMimeType() !== "image/ktx2")
+    || outputRoot.listExtensionsUsed().some((extension) => extension.extensionName === "EXT_texture_webp")
+  ) {
+    throw new Error(`Generated asset failed round-trip validation: ${outputRelativePath}`);
+  }
+  console.log(`Built game_assets/${outputRelativePath}`);
+}

scripts/lib/ktx2.mjs

@@ -0,0 +1,72 @@
+import { spawn } from "node:child_process";
+import { mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import path from "node:path";
+import { NodeIO } from "@gltf-transform/core";
+import { ALL_EXTENSIONS, EXTTextureWebP, KHRTextureBasisu } from "@gltf-transform/extensions";
+import { MeshoptDecoder, MeshoptEncoder } from "meshoptimizer";
+import sharp from "sharp";
+
+export const TOKTX_COMMAND = process.env.TOKTX ?? "toktx";
+
+export async function createGameAssetIO() {
+  await MeshoptDecoder.ready;
+  await MeshoptEncoder.ready;
+  return new NodeIO()
+    .registerExtensions(ALL_EXTENSIONS)
+    .registerDependencies({
+      "meshopt.decoder": MeshoptDecoder,
+      "meshopt.encoder": MeshoptEncoder,
+    });
+}
+
+function run(command, args) {
+  return new Promise((resolve, reject) => {
+    const child = spawn(command, args, { stdio: "inherit" });
+    child.once("error", reject);
+    child.once("exit", (code) => {
+      if (code === 0) resolve();
+      else reject(new Error(`${command} exited with code ${code ?? "unknown"}.`));
+    });
+  });
+}
+
+export async function convertDocumentTexturesToKtx2(document, temporaryPrefix) {
+  const textures = document.getRoot().listTextures();
+  if (textures.length === 0) throw new Error("Asset contains no textures to convert.");
+
+  const temporaryDirectory = await mkdtemp(path.join(tmpdir(), temporaryPrefix));
+  try {
+    for (const [index, texture] of textures.entries()) {
+      const sourceImage = texture.getImage();
+      if (!sourceImage) throw new Error(`Texture ${texture.getName() || index} contains no image data.`);
+
+      const pngPath = path.join(temporaryDirectory, `texture-${index}.png`);
+      const ktx2Path = path.join(temporaryDirectory, `texture-${index}.ktx2`);
+      await writeFile(pngPath, await sharp(sourceImage).png().toBuffer());
+      await run(TOKTX_COMMAND, [
+        "--t2",
+        "--encode", "uastc",
+        "--uastc_quality", "4",
+        "--zcmp", "18",
+        "--threads", process.env.TOKTX_THREADS ?? "4",
+        "--genmipmap",
+        "--assign_oetf", "srgb",
+        "--assign_primaries", "bt709",
+        ktx2Path,
+        pngPath,
+      ]);
+
+      texture
+        .setName(`${texture.getName() || `texture_${index}`}_uastc`)
+        .setMimeType("image/ktx2")
+        .setImage(new Uint8Array(await readFile(ktx2Path)));
+    }
+    document.getRoot().listExtensionsUsed()
+      .find((extension) => extension.extensionName === EXTTextureWebP.EXTENSION_NAME)
+      ?.dispose();
+    document.createExtension(KHRTextureBasisu).setRequired(true);
+  } finally {
+    await rm(temporaryDirectory, { recursive: true, force: true });
+  }
+}

scripts/sync_basis_transcoder.mjs

@@ -0,0 +1,15 @@
+import { copyFile, mkdir } from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const repositoryRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const sourceDirectory = path.join(repositoryRoot, "node_modules", "three", "examples", "jsm", "libs", "basis");
+const outputDirectory = path.join(repositoryRoot, "public", "basis");
+const files = ["basis_transcoder.js", "basis_transcoder.wasm"];
+
+await mkdir(outputDirectory, { recursive: true });
+for (const file of files) {
+  await copyFile(path.join(sourceDirectory, file), path.join(outputDirectory, file));
+}
+
+console.log(`Synced Three.js Basis transcoder ${files.join(", ")} -> public/basis`);

src/assets/game/README.md

@@ -3,3 +3,19 @@
 Only assets referenced by the game ship from this folder. They are copied from the ignored `game_assets` source library, retain their source-relative path, and are imported with Vite `new URL(...)` calls.
 
 Use `pnpm assets:import <path-within-game_assets>` to add a source asset. Add `--replace` only when deliberately updating an existing runtime copy.
+
+## KTX2/UASTC pilot
+
+The tracked `*-uastc.glb` files are parallel optimized copies. Their original GLBs remain the rollback path and must not be replaced or deleted during this pilot.
+
+KTX-Software `toktx` is an authoring dependency. Rebuild source copies with:
+
+```sh
+TOKTX=/path/to/toktx pnpm assets:build-ktx2
+TOKTX=/path/to/toktx pnpm assets:build-dungeon-kit
+TOKTX=/path/to/toktx pnpm assets:build-gravehorn
+```
+
+Import each generated path from `game_assets/` with `pnpm assets:import <path> --replace`. Builds and dev startup copy Three.js's matching Basis transcoder into the ignored `public/basis/` generated directory.
+
+Force all original GLBs at runtime with `?legacyGameAssets=1`. Force them in an Android/browser build with `VITE_LEGACY_GAME_ASSETS=1 pnpm build`. `legacyDungeonAssets` and `VITE_LEGACY_DUNGEON_ASSETS=1` remain supported aliases.

src/assets/game/models/sketchfab-opensource/gravehorn-triceratops.LICENSE.md

@@ -0,0 +1,7 @@
+# Animated Triceratops Skeleton
+
+- Creator: Zacxophone — https://sketchfab.com/Zacxophone
+- Source: https://sketchfab.com/3d-models/animated-triceratops-skeleton-06cb55f941d94dc8b95ac46f92d89e7c
+- License: CC0 1.0 Universal — https://creativecommons.org/publicdomain/zero/1.0/
+
+Runtime files named `gravehorn-triceratops*.glb` are optimized derivatives of this model.

src/components/BossRoom.tsx

@@ -1,15 +1,22 @@
 import { useFrame } from "@react-three/fiber";
 import { useGLTF } from "@react-three/drei";
-import { Suspense, useEffect, useLayoutEffect, useMemo, useRef } from "react";
+import { Component, Suspense, useEffect, useLayoutEffect, useMemo, useRef, type ReactNode } from "react";
 import * as THREE from "three";
 import { ARENA_CENTER, ARENA_SIZE_MULTIPLIER, ARENA_WALL_RADIUS } from "../game/arena";
 import { bossRoomFor, type BossRoomDefinition, type BossRoomFloor } from "../game/bossRooms";
 import { useGameStore } from "../game/store";
+import { LEGACY_GAME_ASSETS_FORCED, useGameGLTF } from "./GameAssetProvider";
 
 const ROOM_CENTER_Z = ARENA_CENTER[1];
 const KAYKIT_DUNGEON_PILLAR_URL = new URL("../assets/game/models/original/environment/kaykit-dungeon/pillar-decorated.glb", import.meta.url).href;
 const KAYKIT_DUNGEON_WALL_URL = new URL("../assets/game/models/original/environment/kaykit-dungeon/wall-pillar.glb", import.meta.url).href;
 const KAYKIT_DUNGEON_TORCH_URL = new URL("../assets/game/models/original/environment/kaykit-dungeon/torch-lit.glb", import.meta.url).href;
+const KAYKIT_DUNGEON_KIT_URL = new URL("../assets/game/models/original/environment/kaykit-dungeon/dungeon-kit-uastc.glb", import.meta.url).href;
+const DUNGEON_MESH_NAMES = {
+  pillar: "pillar_decorated",
+  wall: "wall_pillar",
+  torch: "torch_lit",
+} as const;
 
 type ArenaFixture = {
   position: readonly [number, number, number];
@@ -106,21 +113,19 @@ function firstMesh(scene: THREE.Object3D) {
   return mesh as THREE.Mesh<THREE.BufferGeometry, THREE.Material | THREE.Material[]>;
 }
 
-function DungeonAssetInstances({
+function DungeonMeshInstances({
-  url,
+  mesh,
   fixtures,
   tint,
   opacity = 1,
   colors,
 }: {
-  url: string;
+  mesh: THREE.Mesh<THREE.BufferGeometry, THREE.Material | THREE.Material[]>;
   fixtures: readonly ArenaFixture[];
   tint: string;
   opacity?: number;
   colors?: readonly THREE.Color[];
 }) {
-  const gltf = useGLTF(url, false, true);
-  const mesh = useMemo(() => firstMesh(gltf.scene), [gltf.scene]);
   const sourceMaterial = Array.isArray(mesh.material) ? mesh.material[0] : mesh.material;
   const material = useMemo(() => {
     const next = sourceMaterial.clone();
@@ -156,20 +161,77 @@ function DungeonAssetInstances({
   return <instancedMesh ref={instances} args={[mesh.geometry, material, fixtures.length]} castShadow receiveShadow />;
 }
 
-function ArenaArchitecture({ room }: { room: BossRoomDefinition }) {
+function LegacyDungeonAssetInstances({
-  const walls = useMemo(() => ARENA_WALL_SEGMENTS.map((fixture) => ({
+  url,
+  ...props
+}: Omit<Parameters<typeof DungeonMeshInstances>[0], "mesh"> & { url: string }) {
+  const gltf = useGLTF(url, false, true);
+  const mesh = useMemo(() => firstMesh(gltf.scene), [gltf.scene]);
+  return <DungeonMeshInstances mesh={mesh} {...props} />;
+}
+
+function arenaWalls(room: BossRoomDefinition) {
+  return ARENA_WALL_SEGMENTS.map((fixture) => ({
     ...fixture,
     scaleY: room.wallHeight / 4,
-  })), [room.wallHeight]);
+  }));
+}
+
+function LegacyArenaArchitecture({ room }: { room: BossRoomDefinition }) {
+  const walls = useMemo(() => arenaWalls(room), [room]);
   return (
     <group>
-      <DungeonAssetInstances url={KAYKIT_DUNGEON_WALL_URL} fixtures={walls} tint={room.wallColor} opacity={0.54} />
+      <LegacyDungeonAssetInstances url={KAYKIT_DUNGEON_WALL_URL} fixtures={walls} tint={room.wallColor} opacity={0.54} />
-      <DungeonAssetInstances url={KAYKIT_DUNGEON_PILLAR_URL} fixtures={ARENA_COLUMNS} tint={room.wallColor} />
+      <LegacyDungeonAssetInstances url={KAYKIT_DUNGEON_PILLAR_URL} fixtures={ARENA_COLUMNS} tint={room.wallColor} />
-      <DungeonAssetInstances url={KAYKIT_DUNGEON_TORCH_URL} fixtures={ARENA_TORCHES} tint="#ffffff" colors={ARENA_TORCH_COLORS} />
+      <LegacyDungeonAssetInstances url={KAYKIT_DUNGEON_TORCH_URL} fixtures={ARENA_TORCHES} tint="#ffffff" colors={ARENA_TORCH_COLORS} />
     </group>
   );
 }
 
+function namedMesh(scene: THREE.Object3D, name: string) {
+  const object = scene.getObjectByName(name);
+  if (object instanceof THREE.Mesh) {
+    return object as THREE.Mesh<THREE.BufferGeometry, THREE.Material | THREE.Material[]>;
+  }
+  throw new Error(`Dungeon kit is missing mesh ${name}.`);
+}
+
+function DungeonKitArchitecture({ room }: { room: BossRoomDefinition }) {
+  const gltf = useGameGLTF(KAYKIT_DUNGEON_KIT_URL);
+  const walls = useMemo(() => arenaWalls(room), [room]);
+  const meshes = useMemo(() => ({
+    pillar: namedMesh(gltf.scene, DUNGEON_MESH_NAMES.pillar),
+    wall: namedMesh(gltf.scene, DUNGEON_MESH_NAMES.wall),
+    torch: namedMesh(gltf.scene, DUNGEON_MESH_NAMES.torch),
+  }), [gltf.scene]);
+  return (
+    <group>
+      <DungeonMeshInstances mesh={meshes.wall} fixtures={walls} tint={room.wallColor} opacity={0.54} />
+      <DungeonMeshInstances mesh={meshes.pillar} fixtures={ARENA_COLUMNS} tint={room.wallColor} />
+      <DungeonMeshInstances mesh={meshes.torch} fixtures={ARENA_TORCHES} tint="#ffffff" colors={ARENA_TORCH_COLORS} />
+    </group>
+  );
+}
+
+class DungeonAssetErrorBoundary extends Component<{
+  children: ReactNode;
+  fallback: ReactNode;
+}, { failed: boolean }> {
+  state = { failed: false };
+
+  static getDerivedStateFromError() {
+    return { failed: true };
+  }
+
+  componentDidCatch(error: unknown) {
+    console.warn("Optimized dungeon asset failed; using legacy GLBs.", error);
+  }
+
+  render() {
+    return this.state.failed ? this.props.fallback : this.props.children;
+  }
+}
+
 function RoomWallFallback({ room }: { room: BossRoomDefinition }) {
   const walls = useRef<THREE.Group>(null);
   const previousCameraPosition = useRef<THREE.Vector3 | null>(null);
@@ -205,14 +267,30 @@ function RoomWallFallback({ room }: { room: BossRoomDefinition }) {
   );
 }
 
-function RoomWalls({ room }: { room: BossRoomDefinition }) {
+function LegacyRoomWalls({ room }: { room: BossRoomDefinition }) {
   return (
     <Suspense fallback={<RoomWallFallback room={room} />}>
-      <ArenaArchitecture room={room} />
+      <LegacyArenaArchitecture room={room} />
     </Suspense>
   );
 }
 
+function OptimizedRoomWalls({ room }: { room: BossRoomDefinition }) {
+  return (
+    <DungeonAssetErrorBoundary fallback={<LegacyRoomWalls room={room} />}>
+      <Suspense fallback={<RoomWallFallback room={room} />}>
+        <DungeonKitArchitecture room={room} />
+      </Suspense>
+    </DungeonAssetErrorBoundary>
+  );
+}
+
+function RoomWalls({ room }: { room: BossRoomDefinition }) {
+  return LEGACY_GAME_ASSETS_FORCED
+    ? <LegacyRoomWalls room={room} />
+    : <OptimizedRoomWalls room={room} />;
+}
+
 function RoomMarks({ room }: { room: BossRoomDefinition }) {
   const rays = useRef<THREE.InstancedMesh>(null);
   const pattern = ROOM_PATTERNS[room.floor];
@@ -345,6 +423,8 @@ export function BossRoom() {
   );
 }
 
+if (LEGACY_GAME_ASSETS_FORCED) {
   useGLTF.preload(KAYKIT_DUNGEON_PILLAR_URL, false, true);
   useGLTF.preload(KAYKIT_DUNGEON_WALL_URL, false, true);
   useGLTF.preload(KAYKIT_DUNGEON_TORCH_URL, false, true);
+}

src/components/BossTrophyPortrait.tsx

@@ -1,14 +1,14 @@
 import { Canvas } from "@react-three/fiber";
-import { useGLTF } from "@react-three/drei";
 import { Suspense, useMemo } from "react";
 import * as THREE from "three";
 import { clone as cloneSkeleton } from "three/examples/jsm/utils/SkeletonUtils.js";
 import { BOSS_DEFINITIONS } from "../game/bossCatalog";
 import { ALTERNATE_BOSS_CONFIG, bossVisualUrl } from "../game/bossVisuals";
 import type { BossId } from "../game/types";
+import { GameAssetProvider, LEGACY_GAME_ASSETS_FORCED, useGameGLTF } from "./GameAssetProvider";
 
 function PortraitModel({ bossId }: { bossId: BossId }) {
-  const gltf = useGLTF(bossVisualUrl(bossId), false, true);
+  const gltf = useGameGLTF(bossVisualUrl(bossId, !LEGACY_GAME_ASSETS_FORCED));
   const model = useMemo(() => {
     const clone = cloneSkeleton(gltf.scene);
     clone.updateMatrixWorld(true);
@@ -49,7 +49,9 @@ export function BossTrophyPortrait({ bossId }: { bossId: BossId }) {
         <ambientLight intensity={1.9} />
         <directionalLight color="#fff3cf" intensity={3.2} position={[3, 5, 4]} />
         <directionalLight color={boss.accent} intensity={2.1} position={[-4, 2, -2]} />
+        <GameAssetProvider>
           <Suspense fallback={null}><PortraitModel bossId={bossId} /></Suspense>
+        </GameAssetProvider>
       </Canvas>
       <span aria-hidden="true">{boss.icon}</span>
     </div>

src/components/GameAssetProvider.tsx

@@ -0,0 +1,43 @@
+import { useGLTF } from "@react-three/drei";
+import { useThree } from "@react-three/fiber";
+import { createContext, useContext, useEffect, useState, type ReactNode } from "react";
+import { KTX2Loader } from "three-stdlib";
+
+const BASIS_TRANSCODER_PATH = `${import.meta.env.BASE_URL}basis/`;
+const query = typeof window === "undefined" ? null : new URLSearchParams(window.location.search);
+
+export const LEGACY_GAME_ASSETS_FORCED = import.meta.env.VITE_LEGACY_GAME_ASSETS === "1"
+  || import.meta.env.VITE_LEGACY_DUNGEON_ASSETS === "1"
+  || query?.has("legacyGameAssets") === true
+  || query?.has("legacyDungeonAssets") === true;
+
+const Ktx2LoaderContext = createContext<KTX2Loader | null>(null);
+
+export function selectedGameAssetUrl(legacyUrl: string, optimizedUrl: string) {
+  return LEGACY_GAME_ASSETS_FORCED ? legacyUrl : optimizedUrl;
+}
+
+export function GameAssetProvider({ children }: { children: ReactNode }) {
+  const gl = useThree((state) => state.gl);
+  const [ktx2Loader] = useState(() => LEGACY_GAME_ASSETS_FORCED
+    ? null
+    : new KTX2Loader().setTranscoderPath(BASIS_TRANSCODER_PATH).detectSupport(gl));
+
+  useEffect(() => () => {
+    ktx2Loader?.dispose();
+  }, [ktx2Loader]);
+
+  return <Ktx2LoaderContext.Provider value={ktx2Loader}>{children}</Ktx2LoaderContext.Provider>;
+}
+
+export function useGameGLTF(url: string) {
+  const ktx2Loader = useContext(Ktx2LoaderContext);
+  return useGLTF(
+    url,
+    false,
+    true,
+    (loader) => {
+      if (ktx2Loader) loader.setKTX2Loader(ktx2Loader);
+    },
+  );
+}

src/components/GameScene.tsx

@@ -30,15 +30,30 @@ import type { BossId, MemberId, PulseKind } from "../game/types";
 import { BossRoom } from "./BossRoom";
 import { BossMechanicIndicators } from "./boss/BossMechanicIndicators";
 import { bossCanTrackTarget, bossDeathOpacity } from "./boss/bossDeathVisuals";
+import { GameAssetProvider, LEGACY_GAME_ASSETS_FORCED, selectedGameAssetUrl, useGameGLTF } from "./GameAssetProvider";
 
-const PARTY_MODEL_URLS: Record<MemberId, string> = {
+const PARTY_MODEL_LEGACY_URLS: Record<MemberId, string> = {
   aelia: new URL("../assets/game/models/claudecraft/chars/players/druid.glb", import.meta.url).href,
   brann: new URL("../assets/game/models/claudecraft/chars/players/knight.glb", import.meta.url).href,
   nia: new URL("../assets/game/models/claudecraft/chars/players/ranger.glb", import.meta.url).href,
   orin: new URL("../assets/game/models/claudecraft/chars/players/mage.glb", import.meta.url).href,
   vale: new URL("../assets/game/models/claudecraft/chars/players/rogue.glb", import.meta.url).href,
 };
-const PARTY_WEAPON_URLS: Record<MemberId, { right: string; left?: string }> = {
+const PARTY_MODEL_OPTIMIZED_URLS: Record<MemberId, string> = {
+  aelia: new URL("../assets/game/models/claudecraft/chars/players/druid-uastc.glb", import.meta.url).href,
+  brann: new URL("../assets/game/models/claudecraft/chars/players/knight-uastc.glb", import.meta.url).href,
+  nia: new URL("../assets/game/models/claudecraft/chars/players/ranger-uastc.glb", import.meta.url).href,
+  orin: new URL("../assets/game/models/claudecraft/chars/players/mage-uastc.glb", import.meta.url).href,
+  vale: new URL("../assets/game/models/claudecraft/chars/players/rogue-uastc.glb", import.meta.url).href,
+};
+const PARTY_MODEL_URLS = Object.fromEntries(Object.keys(PARTY_MODEL_LEGACY_URLS).map((memberId) => [
+  memberId,
+  selectedGameAssetUrl(
+    PARTY_MODEL_LEGACY_URLS[memberId as MemberId],
+    PARTY_MODEL_OPTIMIZED_URLS[memberId as MemberId],
+  ),
+])) as Record<MemberId, string>;
+const PARTY_WEAPON_LEGACY_URLS: Record<MemberId, { right: string; left?: string }> = {
   aelia: { right: new URL("../assets/game/models/claudecraft/weapons/adv_druid_staff.glb", import.meta.url).href },
   brann: {
     right: new URL("../assets/game/models/claudecraft/weapons/adv_sword_1handed.glb", import.meta.url).href,
@@ -54,6 +69,30 @@ const PARTY_WEAPON_URLS: Record<MemberId, { right: string; left?: string }> = {
     left: new URL("../assets/game/models/claudecraft/weapons/adv_dagger.glb", import.meta.url).href,
   },
 };
+const PARTY_WEAPON_OPTIMIZED_URLS: Record<MemberId, { right: string; left?: string }> = {
+  aelia: { right: new URL("../assets/game/models/claudecraft/weapons/adv_druid_staff-uastc.glb", import.meta.url).href },
+  brann: {
+    right: new URL("../assets/game/models/claudecraft/weapons/adv_sword_1handed-uastc.glb", import.meta.url).href,
+    left: new URL("../assets/game/models/claudecraft/weapons/shield_badge-uastc.glb", import.meta.url).href,
+  },
+  nia: { right: new URL("../assets/game/models/claudecraft/weapons/crossbow_2handed-uastc.glb", import.meta.url).href },
+  orin: {
+    right: new URL("../assets/game/models/claudecraft/weapons/adv_wand-uastc.glb", import.meta.url).href,
+    left: new URL("../assets/game/models/claudecraft/weapons/spellbook_open-uastc.glb", import.meta.url).href,
+  },
+  vale: {
+    right: new URL("../assets/game/models/claudecraft/weapons/adv_dagger-uastc.glb", import.meta.url).href,
+    left: new URL("../assets/game/models/claudecraft/weapons/adv_dagger-uastc.glb", import.meta.url).href,
+  },
+};
+const PARTY_WEAPON_URLS = Object.fromEntries(Object.keys(PARTY_WEAPON_LEGACY_URLS).map((memberId) => {
+  const legacy = PARTY_WEAPON_LEGACY_URLS[memberId as MemberId];
+  const optimized = PARTY_WEAPON_OPTIMIZED_URLS[memberId as MemberId];
+  return [memberId, {
+    right: selectedGameAssetUrl(legacy.right, optimized.right),
+    left: legacy.left && optimized.left ? selectedGameAssetUrl(legacy.left, optimized.left) : undefined,
+  }];
+})) as Record<MemberId, { right: string; left?: string }>;
 const PARTY_MODEL_SCALES: Record<MemberId, number> = { aelia: 0.62, brann: 0.68, nia: 0.7, orin: 0.64, vale: 0.72 };
 const PARTY_ATTACK_CLIPS: Record<MemberId, string> = {
   aelia: "2H_Melee_Attack_Chop",
@@ -227,12 +266,12 @@ function PartyCharacterModel({
   animationState: MutableRefObject<ActorAnimationState>;
   animationTrigger: MutableRefObject<number>;
 }) {
-  const gltf = useGLTF(PARTY_MODEL_URLS[memberId], false, true);
+  const gltf = useGameGLTF(PARTY_MODEL_URLS[memberId]);
   const actorScene = useMemo(() => cloneSkeleton(gltf.scene), [gltf.scene]);
   const loadout = PARTY_WEAPON_URLS[memberId];
   const grips = PARTY_WEAPON_GRIPS[memberId];
-  const rightWeapon = useGLTF(loadout.right, false, true);
+  const rightWeapon = useGameGLTF(loadout.right);
-  const leftWeapon = useGLTF(loadout.left ?? loadout.right, false, true);
+  const leftWeapon = useGameGLTF(loadout.left ?? loadout.right);
   const rightHandSlot = resolveRigNode(actorScene, "handslot.r");
   const leftHandSlot = resolveRigNode(actorScene, "handslot.l");
   const rightWeaponScene = useMemo(
@@ -793,7 +832,8 @@ function AlternateBoss({ kind, bossIndex }: { kind: AlternateBossKind; bossIndex
   const defeated = bossHp <= 0;
   const group = useRef<THREE.Group>(null);
   const light = useRef<THREE.PointLight>(null);
-  const gltf = useGLTF(config.url, false, true);
+  const assetUrl = selectedGameAssetUrl(config.url, config.optimizedUrl ?? config.url);
+  const gltf = useGameGLTF(assetUrl);
   const { model, fadeMaterials } = useMemo(() => createBossRenderModel(gltf.scene), [gltf.scene]);
   const { actions } = useAnimations(gltf.animations, model);
   const targetPosition = useMemo(() => new THREE.Vector3(), []);
@@ -1184,6 +1224,7 @@ export function GameScene() {
       camera={{ position: [0, 5.2, 12], fov: 48, near: 0.1, far: 70 }}
       gl={{ alpha: false, antialias: false, powerPreference: "high-performance" }}
     >
+      <GameAssetProvider>
         <SceneFrameScheduler dpr={dpr} onDprChange={setRenderDpr} />
         <BossRoom />
         <BossMechanicIndicators />
@@ -1194,13 +1235,16 @@ export function GameScene() {
         <RangedProjectiles />
         <CombatFx />
         {PERFORMANCE_PROBE_ENABLED && <PerformanceProbe />}
+      </GameAssetProvider>
     </Canvas>
   );
 }
 
+if (LEGACY_GAME_ASSETS_FORCED) {
   for (const memberId of CRITICAL_PARTY_MEMBER_IDS) {
     useGLTF.preload(PARTY_MODEL_URLS[memberId], false, true);
     const loadout = PARTY_WEAPON_URLS[memberId];
     useGLTF.preload(loadout.right, false, true);
     if (loadout.left) useGLTF.preload(loadout.left, false, true);
   }
+}

src/game/bossCatalog.test.ts

@@ -7,7 +7,7 @@ import { ALTERNATE_BOSS_CONFIG } from "./bossVisuals";
 describe("boss catalog", () => {
   it("derives the available roster from every catalog definition", () => {
     expect(AVAILABLE_BOSS_IDS).toEqual(Object.keys(BOSS_DEFINITIONS));
-    expect(new Set(AVAILABLE_BOSS_IDS)).toHaveLength(27);
+    expect(new Set(AVAILABLE_BOSS_IDS)).toHaveLength(28);
   });
 
   it("assigns every boss to one compatible mechanic group", () => {
@@ -66,6 +66,18 @@ describe("boss catalog", () => {
     expect(ALTERNATE_BOSS_CONFIG["bristlequake-boar"].death).toBe("Dying");
   });
 
+  it("assigns Gravehorn to the underfilled burrow group with its optimized animation set", () => {
+    expect(BOSS_GROUPS.find((group) => group.id === "burrow-eruption")?.bossIds).toContain("gravehorn-triceratops");
+    expect(ALTERNATE_BOSS_CONFIG["gravehorn-triceratops"]).toMatchObject({
+      idle: "Gravehorn|Idle",
+      move: "Armature|Walk",
+      attack: "Armature|Roar",
+      special: "Armature|RiseUp",
+      death: "Armature|Fall",
+    });
+    expect(ALTERNATE_BOSS_CONFIG["gravehorn-triceratops"].optimizedUrl).toContain("gravehorn-triceratops-uastc");
+  });
+
   it("uses original animated creatures instead of the retired chicken and frog visuals", () => {
     expect(ALTERNATE_BOSS_CONFIG["cluckhorn-colossus"]).toMatchObject({
       idle: "Idle", move: "Scuttle", attack: "BeakRend", special: "FurnaceBurst", death: "Death",

src/game/bossCatalog.ts

@@ -191,6 +191,10 @@ const BOSS_SEEDS: Record<BossId, BossSeed> = {
     name: "Rimeclaw", title: "The Frozen Duel", icon: "✥", accent: "#75bfe8",
     summary: "Sidesteps between frost strikes before forming a lethal ice cross.", mechanicIds: ["elemental-beam", "guardian-cross", "memory-sequence"], maxHp: 500, archetype: "duelist",
   },
+  "gravehorn-triceratops": {
+    name: "Gravehorn", title: "The Fossil Wake", icon: "☠", accent: "#d8c79b",
+    summary: "Burrows through fossil trails, erupts beneath the party, and releases a radial grave pulse.", mechanicIds: ["burrow-rush", "hourglass-eruption", "destruction-pulse"], maxHp: 540, archetype: "burrower",
+  },
 };
 
 /**
@@ -220,7 +224,7 @@ export const BOSS_GROUPS: readonly BossGroupDefinition[] = [
   },
   {
     id: "burrow-eruption", letter: "F", name: "Burrow / Eruption", coreMechanic: "Burrow and Eruption",
-    bossIds: ["sandglass-scorpion", "mirelord-frog"], archetypes: ["burrower"],
+    bossIds: ["sandglass-scorpion", "mirelord-frog", "gravehorn-triceratops"], archetypes: ["burrower"],
   },
   {
     id: "scuttle-burst", letter: "G", name: "Scuttle / Burst", coreMechanic: "Scuttle and Burst",

src/game/bossRooms.ts

@@ -133,6 +133,9 @@ export const BOSS_ROOMS = {
   "rimeclaw-yeti": room("frozen-duel", "The Frozen Duel", "Frozen mirror palace", "frost", {
     background: "#07162a", fog: "#285a83", sky: "#8fd8ff", ground: "#030c19", floorColor: "#17476d", wallColor: "#2d6691", accent: "#74c8f4", accentSecondary: "#c1f6ff", wallHeight: 4.9,
   }),
+  "gravehorn-triceratops": room("fossil-wake", "The Fossil Wake", "Buried ossuary", "reliquary", {
+    background: "#100d08", fog: "#40382a", sky: "#d8c79b", ground: "#090704", floorColor: "#332b20", wallColor: "#4c4030", accent: "#d8c79b", accentSecondary: "#8eb9a6", wallHeight: 4.5,
+  }),
 } as const satisfies Record<BossId, BossRoomDefinition>;
 
 export function bossRoomFor(bossId: BossId): BossRoomDefinition {

src/game/bossVisuals.ts

@@ -4,6 +4,7 @@ export type AlternateBossKind = Exclude<BossId, "bulldrome">;
 
 export interface AlternateBossConfig {
   url: string;
+  optimizedUrl?: string;
   scale: number;
   idle: string;
   move: string;
@@ -21,6 +22,8 @@ const SANDGLASS_URL = new URL("../assets/game/models/original/bosses/sandglass-s
 const CRYSTAL_BAT_MATRIARCH_URL = new URL("../assets/game/models/original/bosses/crystal-bat-matriarch/crystal-bat-matriarch.glb", import.meta.url).href;
 const BRASSBEAK_BASILISK_URL = new URL("../assets/game/models/original/bosses/brassbeak-basilisk/brassbeak-basilisk.glb", import.meta.url).href;
 const BOGBELL_MYCONID_URL = new URL("../assets/game/models/original/bosses/bogbell-myconid/bogbell-myconid.glb", import.meta.url).href;
+const GRAVEHORN_URL = new URL("../assets/game/models/sketchfab-opensource/gravehorn-triceratops.glb", import.meta.url).href;
+const GRAVEHORN_OPTIMIZED_URL = new URL("../assets/game/models/sketchfab-opensource/gravehorn-triceratops-uastc.glb", import.meta.url).href;
 const CRAGCLAW_URL = new URL("../assets/game/models/claudecraft/creatures/crabenemy.glb", import.meta.url).href;
 const MOURNVEIL_URL = new URL("../assets/game/models/claudecraft/creatures/ghost.glb", import.meta.url).href;
 const CROWNSHARD_URL = new URL("../assets/game/models/claudecraft/creatures/golelingevolved.glb", import.meta.url).href;
@@ -34,6 +37,7 @@ const CLAUDE_BOSS_URLS: Record<Exclude<BossId,
   | "crystal-bat-matriarch"
   | "cluckhorn-colossus"
   | "mirelord-frog"
+  | "gravehorn-triceratops"
 >, string> = {
   "stormwool-alpaca": new URL("../assets/game/models/claudecraft/creatures/alpaca.glb", import.meta.url).href,
   "ashwing-demon": new URL("../assets/game/models/claudecraft/creatures/demon.glb", import.meta.url).href,
@@ -84,8 +88,11 @@ export const ALTERNATE_BOSS_CONFIG: Record<AlternateBossKind, AlternateBossConfi
   "moonfang-wolf": { url: CLAUDE_BOSS_URLS["moonfang-wolf"], scale: 1.05, idle: "Idle", move: "Gallop", attack: "Attack", special: "Gallop_Jump", death: "Death", light: "#9db9e5", rotationOffset: 0 },
   "frostmaw-yeti": { url: CLAUDE_BOSS_URLS["frostmaw-yeti"], scale: 1.35, idle: "Idle", move: "Walk", attack: "Bite_Front", special: "Jump", death: "Death", light: "#8ed8ef", rotationOffset: 0 },
   "rimeclaw-yeti": { url: CLAUDE_BOSS_URLS["rimeclaw-yeti"], scale: 1.35, idle: "Idle", move: "Run", attack: "Punch", special: "Weapon", death: "Death", light: "#75bfe8", rotationOffset: 0 },
+  "gravehorn-triceratops": { url: GRAVEHORN_URL, optimizedUrl: GRAVEHORN_OPTIMIZED_URL, scale: 0.82, idle: "Gravehorn|Idle", move: "Armature|Walk", attack: "Armature|Roar", special: "Armature|RiseUp", death: "Armature|Fall", light: "#ffd9a0", rotationOffset: 0 },
 };
 
-export function bossVisualUrl(bossId: BossId): string {
+export function bossVisualUrl(bossId: BossId, optimized = false): string {
-  return bossId === "bulldrome" ? BULL_URL : ALTERNATE_BOSS_CONFIG[bossId].url;
+  if (bossId === "bulldrome") return BULL_URL;
+  const config = ALTERNATE_BOSS_CONFIG[bossId];
+  return optimized ? config.optimizedUrl ?? config.url : config.url;
 }

src/game/types.ts

@@ -27,7 +27,8 @@ export type BossId =
   | "bristlequake-boar"
   | "moonfang-wolf"
   | "frostmaw-yeti"
-  | "rimeclaw-yeti";
+  | "rimeclaw-yeti"
+  | "gravehorn-triceratops";
 export type BossMechanicId =
   | "basic-melee"
   | "bull-charge"