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/rendering/mesh-3d/src/index.ts

@@ -0,0 +1,39 @@
+/**
+ * @esengine/mesh-3d - 3D Mesh Rendering Module
+ * 3D 网格渲染模块
+ *
+ * Provides components and systems for rendering GLTF/GLB 3D models.
+ * 提供用于渲染 GLTF/GLB 3D 模型的组件和系统。
+ */
+
+// Components
+// 组件
+export { MeshComponent } from './MeshComponent';
+export { Animation3DComponent, AnimationPlayState, AnimationWrapMode } from './Animation3DComponent';
+export { SkeletonComponent, type BoneTransform } from './SkeletonComponent';
+
+// Systems
+// 系统
+export { MeshRenderSystem } from './systems/MeshRenderSystem';
+export { MeshAssetLoaderSystem } from './systems/MeshAssetLoaderSystem';
+export { Animation3DSystem } from './systems/Animation3DSystem';
+export { SkeletonBakingSystem } from './systems/SkeletonBakingSystem';
+
+// Animation utilities
+// 动画工具
+export { AnimationEvaluator } from './animation/AnimationEvaluator';
+
+// Tokens
+// 令牌
+export { MeshRenderSystemToken } from './tokens';
+
+// Plugin
+// 插件
+export {
+    Mesh3DPlugin,
+    Mesh3DRuntimeModule,
+    type SystemContext,
+    type ModuleManifest,
+    type IRuntimeModule,
+    type IRuntimePlugin
+} from './Mesh3DRuntimeModule';