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/engine/material-system/src/index.ts

@@ -0,0 +1,102 @@
+/**
+ * Material System for ES Engine.
+ * ES引擎材质系统。
+ *
+ * This system provides:
+ * 该系统提供：
+ *
+ * - Material: Material definition class with shader and uniform parameters.
+ *   材质定义类，包含着色器和 uniform 参数。
+ * - Shader: Shader definition class with vertex and fragment shader code.
+ *   着色器定义类，包含顶点和片段着色器代码。
+ * - MaterialManager: Material asset manager.
+ *   材质资产管理器。
+ * - MaterialLoader: Asset loader for .mat files.
+ *   .mat 文件的资产加载器。
+ *
+ * Note: Materials are not standalone components, but used as properties of
+ * render components (such as SpriteComponent).
+ * 注意：材质不是独立组件，而是作为渲染组件（如 SpriteComponent）的属性使用。
+ *
+ * @packageDocumentation
+ */
+
+// Types.
+// 类型。
+export * from './types';
+
+// Interfaces.
+// 接口。
+export type {
+    MaterialPropertyType,
+    MaterialPropertyOverride,
+    MaterialOverrides,
+    IMaterialOverridable
+} from './interfaces/IMaterialOverridable';
+
+export type {
+    ShaderPropertyType,
+    ShaderPropertyHint,
+    ShaderPropertyMeta,
+    ShaderAssetDefinition,
+    ShaderAssetFile
+} from './interfaces/IShaderProperty';
+
+export {
+    BUILTIN_SHADER_PROPERTIES,
+    getShaderProperties,
+    getShaderPropertiesById
+} from './interfaces/IShaderProperty';
+
+// Mixins.
+// Mixin。
+export { MaterialOverridableMixin, MaterialOverrideHelper } from './mixins/MaterialOverridableMixin';
+
+// Effects.
+// 效果。
+export type { IShinyEffect } from './effects/BaseShinyEffect';
+export {
+    SHINY_EFFECT_DEFAULTS,
+    SHINY_EFFECT_PROPERTIES,
+    resetShinyEffect,
+    startShinyEffect,
+    stopShinyEffect,
+    getShinyRotationRadians
+} from './effects/BaseShinyEffect';
+export { ShinyEffectAnimator } from './effects/ShinyEffectAnimator';
+
+// Core classes.
+// 核心类。
+export { Material } from './Material';
+export {
+    Shader,
+    DEFAULT_VERTEX_SHADER,
+    DEFAULT_FRAGMENT_SHADER,
+    GRAYSCALE_FRAGMENT_SHADER,
+    TINT_FRAGMENT_SHADER,
+    FLASH_FRAGMENT_SHADER,
+    OUTLINE_FRAGMENT_SHADER,
+    SHINY_FRAGMENT_SHADER
+} from './Shader';
+
+// Manager.
+// 管理器。
+export { MaterialManager, getMaterialManager } from './MaterialManager';
+export type { IEngineBridge } from './MaterialManager';
+
+// Loaders.
+// 加载器。
+export { MaterialLoader } from './loaders/MaterialLoader';
+export type { IMaterialAssetData } from './loaders/MaterialLoader';
+export { ShaderLoader } from './loaders/ShaderLoader';
+export type { IShaderAssetData, ShaderFileFormat } from './loaders/ShaderLoader';
+
+// Runtime Module.
+// 运行时模块。
+export { MaterialRuntimeModule, materialRuntimeModule, MaterialSystemPlugin } from './MaterialSystemPlugin';
+export type { IMaterialRuntimeModule } from './MaterialSystemPlugin';
+
+// Service Tokens.
+// 服务令牌。
+export { MaterialManagerToken } from './tokens';
+export type { IMaterialManager } from './tokens';