feat(physics): 集成 Rapier2D 物理引擎并修复预览重置问题 (#244)

* feat(physics): 集成 Rapier2D 物理引擎并修复预览重置问题

* fix: 修复 CI 流程并清理代码

.github/workflows/ci.yml

@@ -74,6 +74,7 @@ jobs:
         cd ../editor-runtime && pnpm run build
         cd ../behavior-tree && pnpm run build
         cd ../tilemap && pnpm run build
+        cd ../physics-rapier2d && pnpm run build
 
     - name: Build ecs-engine-bindgen
       run: |

.github/workflows/release-editor.yml

@@ -147,7 +147,12 @@ jobs:
           cd packages/behavior-tree
           pnpm run build
 
-      # ===== 第七层：平台包（依赖 ui, tilemap） =====
+      - name: Build physics-rapier2d package
+        run: |
+          cd packages/physics-rapier2d
+          pnpm run build
+
+      # ===== 第七层：平台包（依赖 ui, tilemap, behavior-tree, physics-rapier2d） =====
       - name: Build platform-web package
         run: |
           cd packages/platform-web