refactor: extract viewer2d workspace package

package.json

@@ -4,20 +4,26 @@
   "version": "0.1.0",
   "description": "Standalone sample: compose acadrust-dwg + dxf-parser + Viewer2D (sibling of hmwebviewer)",
   "type": "module",
+  "workspaces": [
+    "packages/*"
+  ],
   "scripts": {
     "dev": "vite --port 5173 --strictPort",
     "build": "tsc --noEmit && vite build",
     "preview": "vite preview",
-    "typecheck": "tsc --noEmit"
+    "typecheck": "tsc --noEmit",
+    "test": "vitest run",
+    "test:unit": "vitest run tests/viewer2d.contract.test.ts"
   },
   "dependencies": {
-    "dxf-parser": "^1.1.2",
-    "opentype.js": "^2.0.0",
-    "three": "^0.185.1"
+    "@hmwebviewer/viewer2d": "workspace:*",
+    "three": "0.185.1"
   },
   "devDependencies": {
-    "@types/three": "^0.185.1",
-    "typescript": "^5.6.0",
-    "vite": "^5.4.0"
+    "@playwright/test": "1.62.0",
+    "@types/three": "0.185.1",
+    "typescript": "7.0.2",
+    "vite": "8.1.5",
+    "vitest": "4.1.10"
   }
 }