release: v0.6.0

Bump @pascal-app/core, @pascal-app/viewer, and @pascal-app/editor to 0.6.0.
Update cross-package peer/dev dependency versions.

packages/viewer/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@pascal-app/viewer",
-  "version": "0.5.1",
+  "version": "0.6.0",
   "description": "3D viewer component for Pascal building editor",
   "type": "module",
   "main": "./dist/index.js",
@@ -22,7 +22,7 @@
     "prepublishOnly": "npm run build"
   },
   "peerDependencies": {
-    "@pascal-app/core": "^0.5.1",
+    "@pascal-app/core": "^0.6.0",
     "@react-three/drei": "^10",
     "@react-three/fiber": "^9",
     "react": "^18 || ^19",