feat: IFC → Pascal converter (package + app)

Brings the IFC-to-Pascal converter into the monorepo as a pure-logic
package plus a Next.js app, replacing the standalone repo that consumed
published @pascal-app/* packages (and drifted from their schemas).

packages/ifc-converter — pure conversion. Parses IFC via web-ifc and
maps elements onto @pascal-app/core node schemas (workspace-linked, so
no more version drift). Builds doors/windows, walls, slabs, columns,
roofs, stairs, sites/buildings/levels. Validates each node via the real
Zod schemas at build time (tryParse) and strips undefined metadata.

apps/ifc-converter — the UI: drop zone, example picker, element search,
JSON download, and a 3D preview rendered through the real
@pascal-app/viewer (registry bootstrap + read-only scene) with a custom
toolbar (camera/level/wall/grid/theme), level selector with
camera-focus, auto-fit, and selection bridged to an inspector.

Conversion specifics worth noting:
- Door/window vertical centering (height/2; windows + sill).
- Nearest-wall hosting fallback for files lacking IFCRELFILLSELEMENT,
  preferring walls long enough to contain the opening and clamping the
  along-wall position so cutouts can't overflow and break wall CSG.
- Plain IFCWALL (Brep/mapped geometry) falls back to default
  height/thickness instead of collapsing to zero-height slivers.
- Columns convert as plain structural shafts (no decorative
  base/capital) sized from the IFC profile.
- Beams + items are skipped for now (no Pascal beam type; items need a
  catalog asset) — counted in the conversion summary.

Large example IFCs are fetched from a public bucket at runtime; the four
small ones are committed. web-ifc.wasm is copied into public/ on
install/dev/build. README flags early-alpha + invites contributions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

bun.lock

@@ -62,6 +62,38 @@
         "typescript": "6.0.2",
       },
     },
+    "apps/ifc-converter": {
+      "name": "ifc-converter-app",
+      "version": "0.1.0",
+      "dependencies": {
+        "@pascal-app/core": "*",
+        "@pascal-app/ifc-converter": "*",
+        "@pascal-app/nodes": "*",
+        "@pascal-app/viewer": "*",
+        "@react-three/drei": "^10.7.7",
+        "@react-three/fiber": "^9.5.0",
+        "@tailwindcss/postcss": "^4.2.1",
+        "clsx": "^2.1.1",
+        "lucide-react": "^1.7.0",
+        "next": "16.2.1",
+        "postcss": "^8.5.6",
+        "react": "^19.2.4",
+        "react-dom": "^19.2.4",
+        "tailwind-merge": "^3.5.0",
+        "tailwindcss": "^4.2.1",
+        "three": "^0.184.0",
+        "web-ifc": "^0.0.77",
+        "zod": "^4.3.5",
+      },
+      "devDependencies": {
+        "@pascal/typescript-config": "*",
+        "@types/node": "^22.19.12",
+        "@types/react": "^19.2.2",
+        "@types/react-dom": "^19.2.3",
+        "@types/three": "^0.184.0",
+        "typescript": "6.0.2",
+      },
+    },
     "packages/core": {
       "name": "@pascal-app/core",
       "version": "0.8.0",
@@ -163,6 +195,20 @@
         "typescript-eslint": "^8.50.0",
       },
     },
+    "packages/ifc-converter": {
+      "name": "@pascal-app/ifc-converter",
+      "version": "0.1.0",
+      "dependencies": {
+        "@pascal-app/core": "*",
+        "nanoid": "^5.1.6",
+        "web-ifc": "^0.0.77",
+      },
+      "devDependencies": {
+        "@pascal/typescript-config": "*",
+        "@types/bun": "^1.3.0",
+        "typescript": "6.0.2",
+      },
+    },
     "packages/mcp": {
       "name": "@pascal-app/mcp",
       "version": "0.2.0",
@@ -476,6 +522,8 @@
 
     "@pascal-app/editor": ["@pascal-app/editor@workspace:packages/editor"],
 
+    "@pascal-app/ifc-converter": ["@pascal-app/ifc-converter@workspace:packages/ifc-converter"],
+
     "@pascal-app/mcp": ["@pascal-app/mcp@workspace:packages/mcp"],
 
     "@pascal-app/nodes": ["@pascal-app/nodes@workspace:packages/nodes"],
@@ -1032,6 +1080,8 @@
 
     "ieee754": ["ieee754@1.2.1", "", {}, "sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA=="],
 
+    "ifc-converter-app": ["ifc-converter-app@workspace:apps/ifc-converter"],
+
     "ignore": ["ignore@5.3.2", "", {}, "sha512-hsBTNUqQTDwkWtcdYI2i06Y/nUBEsNEDJKjWdigLvegy8kDuJAS8uRlpkkcQpyEXL0Z/pjDy5HBmMjRCJ2gq+g=="],
 
     "immediate": ["immediate@3.0.6", "", {}, "sha512-XXOFtyqDjNDAQxVfYxuF7g9Il/IbWmmlQg2MYKOH8ExIT1qg6xc4zyS3HaEEATgs1btfzxq15ciUiY7gjSXRGQ=="],
@@ -1512,6 +1562,8 @@
 
     "vary": ["vary@1.1.2", "", {}, "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg=="],
 
+    "web-ifc": ["web-ifc@0.0.77", "", {}, "sha512-VzQ0W/Iiqbidxn1ECUvz6qJ6p2sXBVNcOsUOBCETzy77psAH6yFLKQm74aXabkx3JH4OvFVHe8k1qS6+Z2zl1w=="],
+
     "webgl-constants": ["webgl-constants@1.1.1", "", {}, "sha512-LkBXKjU5r9vAW7Gcu3T5u+5cvSvh5WwINdr0C+9jpzVB41cjQAP5ePArDtk/WHYdVj0GefCgM73BA7FlIiNtdg=="],
 
     "webgl-sdf-generator": ["webgl-sdf-generator@1.1.1", "", {}, "sha512-9Z0JcMTFxeE+b2x1LJTdnaT8rT8aEp7MVxkNwoycNmJWwPdzoXzMh0BjJSh/AEFP+KPYZUli814h8bJZFIZ2jA=="],
@@ -1624,6 +1676,8 @@
 
     "glob/minimatch": ["minimatch@10.2.5", "", { "dependencies": { "brace-expansion": "^5.0.5" } }, "sha512-MULkVLfKGYDFYejP07QOurDLLQpcjk7Fw+7jXS2R2czRQzR56yHRveU5NDJEOviH+hETZKSkIk5c+T23GjFUMg=="],
 
+    "ifc-converter-app/@types/node": ["@types/node@22.19.18", "", { "dependencies": { "undici-types": "~6.21.0" } }, "sha512-9v00a+dn2yWVsYDEunWC4g/TcRKVq3r8N5FuZp7u0SGrPvdN9c2yXI9bBuf5Fl0hNCb+QTIePTn5pJs2pwBOQQ=="],
+
     "micromatch/picomatch": ["picomatch@2.3.2", "", {}, "sha512-V7+vQEJ06Z+c5tSye8S+nHUfI51xoXIXjHQ99cQtKUkQqqO1kO/KCJUfZXuB47h/YBlDhah2H3hdUGXn8ie0oA=="],
 
     "next/postcss": ["postcss@8.4.31", "", { "dependencies": { "nanoid": "^3.3.6", "picocolors": "^1.0.0", "source-map-js": "^1.0.2" } }, "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ=="],
@@ -1658,6 +1712,8 @@
 
     "glob/minimatch/brace-expansion": ["brace-expansion@5.0.6", "", { "dependencies": { "balanced-match": "^4.0.2" } }, "sha512-kLpxurY4Z4r9sgMsyG0Z9uzsBlgiU/EFKhj/h91/8yHu0edo7XuixOIH3VcJ8kkxs6/jPzoI6U9Vj3WqbMQ94g=="],
 
+    "ifc-converter-app/@types/node/undici-types": ["undici-types@6.21.0", "", {}, "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ=="],
+
     "next/postcss/nanoid": ["nanoid@3.3.12", "", { "bin": { "nanoid": "bin/nanoid.cjs" } }, "sha512-ZB9RH/39qpq5Vu6Y+NmUaFhQR6pp+M2Xt76XBnEwDaGcVAqhlvxrl3B2bKS5D3NH3QR76v3aSrKaF/Kiy7lEtQ=="],
 
     "@typescript-eslint/typescript-estree/minimatch/brace-expansion/balanced-match": ["balanced-match@4.0.4", "", {}, "sha512-BLrgEcRTwX2o6gGxGOCNyMvGSp35YofuYzw9h1IMTRmKqttAZZVU67bdb9Pr2vUHA8+j3i2tJfjO6C6+4myGTA=="],