feat(asset): 统一资产引用使用 GUID 替代路径 (#287)

* feat(world-streaming): 添加世界流式加载系统

实现基于区块的世界流式加载系统，支持开放世界游戏：

运行时包 (@esengine/world-streaming):
- ChunkComponent: 区块实体组件，包含坐标、边界、状态
- StreamingAnchorComponent: 流式锚点组件（玩家/摄像机）
- ChunkLoaderComponent: 流式加载配置组件
- ChunkStreamingSystem: 区块加载/卸载调度系统
- ChunkCullingSystem: 区块可见性剔除系统
- ChunkManager: 区块生命周期管理服务
- SpatialHashGrid: 空间哈希网格
- ChunkSerializer: 区块序列化

编辑器包 (@esengine/world-streaming-editor):
- ChunkVisualizer: 区块可视化覆盖层
- ChunkLoaderInspectorProvider: 区块加载器检视器
- StreamingAnchorInspectorProvider: 流式锚点检视器
- WorldStreamingPlugin: 完整插件导出

* feat(asset): 统一资产引用使用 GUID 替代路径

将所有组件的资产引用字段从路径改为 GUID：
- SpriteComponent: texture -> textureGuid, material -> materialGuid
- SpriteAnimatorComponent: AnimationFrame.texture -> textureGuid
- UIRenderComponent: texture -> textureGuid
- UIButtonComponent: normalTexture -> normalTextureGuid 等
- AudioSourceComponent: clip -> clipGuid
- ParticleSystemComponent: 已使用 textureGuid

修复 AssetRegistryService 注册问题和路径规范化，
添加渲染系统的 GUID 解析支持。

* fix(sprite-editor): 更新 material 为 materialGuid

* fix(editor-app): 更新 AnimationFrame.texture 为 textureGuid

packages/ui/src/components/UIRenderComponent.ts

@@ -96,12 +96,12 @@ export class UIRenderComponent extends Component {
     // ===== 纹理 Texture =====
 
     /**
-     * 纹理路径或 ID
-     * Texture path or runtime ID
+     * 纹理资产 GUID 或运行时 ID
+     * Texture asset GUID or runtime ID
      */
     @Serialize()
     @Property({ type: 'asset', label: 'Texture', assetType: 'texture' })
-    public texture: string | number | null = null;
+    public textureGuid: string | number | null = null;
 
     /**
      * 纹理 UV 坐标 (用于图集)
@@ -230,20 +230,25 @@ export class UIRenderComponent extends Component {
     /**
      * 设置图片
      * Set image texture
+     *
+     * @param textureGuid - 纹理资产 GUID | Texture asset GUID
      */
-    public setImage(texture: string | number): this {
+    public setImage(textureGuid: string | number): this {
         this.type = UIRenderType.Image;
-        this.texture = texture;
+        this.textureGuid = textureGuid;
         return this;
     }
 
     /**
      * 设置九宫格
      * Set nine-patch image
+     *
+     * @param textureGuid - 纹理资产 GUID | Texture asset GUID
+     * @param margins - 九宫格边距 | Nine-patch margins
      */
-    public setNinePatch(texture: string | number, margins: [number, number, number, number]): this {
+    public setNinePatch(textureGuid: string | number, margins: [number, number, number, number]): this {
         this.type = UIRenderType.NinePatch;
-        this.texture = texture;
+        this.textureGuid = textureGuid;
         this.ninePatchMargins = margins;
         return this;
     }