refactor: reorganize package structure and decouple framework packages (#338)

* refactor: reorganize package structure and decouple framework packages

## Package Structure Reorganization
- Reorganized 55 packages into categorized subdirectories:
  - packages/framework/ - Generic framework (Laya/Cocos compatible)
  - packages/engine/ - ESEngine core modules
  - packages/rendering/ - Rendering modules (WASM dependent)
  - packages/physics/ - Physics modules
  - packages/streaming/ - World streaming
  - packages/network-ext/ - Network extensions
  - packages/editor/ - Editor framework and plugins
  - packages/rust/ - Rust WASM engine
  - packages/tools/ - Build tools and SDK

## Framework Package Decoupling
- Decoupled behavior-tree and blueprint packages from ESEngine dependencies
- Created abstracted interfaces (IBTAssetManager, IBehaviorTreeAssetContent)
- ESEngine-specific code moved to esengine/ subpath exports
- Framework packages now usable with Cocos/Laya without ESEngine

## CI Configuration
- Updated CI to only type-check and lint framework packages
- Added type-check:framework and lint:framework scripts

## Breaking Changes
- Package import paths changed due to directory reorganization
- ESEngine integrations now use subpath imports (e.g., '@esengine/behavior-tree/esengine')

* fix: update es-engine file path after directory reorganization

* docs: update README to focus on framework over engine

* ci: only build framework packages, remove Rust/WASM dependencies

* fix: remove esengine subpath from behavior-tree and blueprint builds

ESEngine integration code will only be available in full engine builds.
Framework packages are now purely engine-agnostic.

* fix: move network-protocols to framework, build both in CI

* fix: update workflow paths from packages/core to packages/framework/core

* fix: exclude esengine folder from type-check in behavior-tree and blueprint

* fix: update network tsconfig references to new paths

* fix: add test:ci:framework to only test framework packages in CI

* fix: only build core and math npm packages in CI

* fix: exclude test files from CodeQL and fix string escaping security issue

packages/physics/physics-rapier2d/src/index.ts

@@ -0,0 +1,42 @@
+/**
+ * @esengine/physics-rapier2d
+ *
+ * Deterministic 2D physics engine based on Rapier2D with enhanced-determinism support.
+ * 基于 Rapier2D 的确定性 2D 物理引擎。
+ *
+ * 注意：此入口不包含 WASM 依赖，可安全地在编辑器中同步导入。
+ * 运行时模块（含 WASM）请使用 '@esengine/physics-rapier2d/runtime' 导入。
+ *
+ * @packageDocumentation
+ */
+
+// Types (no WASM dependency)
+export * from './types';
+
+// Components (no WASM dependency)
+export * from './components';
+
+// Services (no WASM dependency)
+export * from './services';
+
+// Systems (type only for editor usage)
+export type { Physics2DSystem } from './systems/Physics2DSystem';
+
+// Editor plugin (no WASM dependency)
+export { Physics2DPlugin } from './PhysicsEditorPlugin';
+
+// Runtime plugin (for game builds)
+export { PhysicsPlugin } from './PhysicsRuntimeModule';
+
+// Service tokens and interfaces (谁定义接口，谁导出 Token)
+export {
+    Physics2DQueryToken,
+    Physics2DSystemToken,
+    Physics2DWorldToken,
+    PhysicsConfigToken,
+    CollisionLayerConfigToken,
+    type IPhysics2DQuery,
+    type IPhysics2DWorld,
+    type ICollisionLayerConfig,
+    type PhysicsConfig
+} from './tokens';