Feature/editor optimization (#251)

* refactor: 编辑器/运行时架构拆分与构建系统升级

* feat(core): 层级系统重构与UI变换矩阵修复

* refactor: 移除 ecs-components 聚合包并修复跨包组件查找问题

* fix(physics): 修复跨包组件类引用问题

* feat: 统一运行时架构与浏览器运行支持

* feat(asset): 实现浏览器运行时资产加载系统

* fix: 修复文档、CodeQL安全问题和CI类型检查错误

* fix: 修复文档、CodeQL安全问题和CI类型检查错误

* fix: 修复文档、CodeQL安全问题、CI类型检查和测试错误

* test: 补齐核心模块测试用例，修复CI构建配置

* fix: 修复测试用例中的类型错误和断言问题

* fix: 修复 turbo build:npm 任务的依赖顺序问题

* fix: 修复 CI 构建错误并优化构建性能

packages/platform-web/src/index.ts

@@ -1,28 +1,32 @@
 /**
- * Web/H5 平台适配器包
+ * @esengine/platform-web
+ *
+ * Web/H5 平台适配器 - 仅包含平台差异代码
+ * 通用运行时逻辑在 @esengine/runtime-core
+ *
  * @packageDocumentation
  */
 
-// 引擎桥接
-export { EngineBridge } from './EngineBridge';
-export type { EngineBridgeConfig } from './EngineBridge';
-
-// 子系统
+// Web 平台子系统
 export { WebCanvasSubsystem } from './subsystems/WebCanvasSubsystem';
 export { WebInputSubsystem } from './subsystems/WebInputSubsystem';
 export { WebStorageSubsystem } from './subsystems/WebStorageSubsystem';
 export { WebWASMSubsystem } from './subsystems/WebWASMSubsystem';
 
-// 运行时系统配置
-export {
-    registerAvailablePlugins,
-    initializeRuntime,
-    initializePluginsForProject,
-    createRuntimeSystems
-} from './RuntimeSystems';
-export type { RuntimeSystems, RuntimeModuleConfig } from './RuntimeSystems';
+// Web 特定系统
+export { Canvas2DRenderSystem } from './systems/Canvas2DRenderSystem';
 
-// 工具
 export function isWebPlatform(): boolean {
     return typeof window !== 'undefined' && typeof document !== 'undefined';
 }
+
+export function getWebCanvas(canvasId: string): HTMLCanvasElement | null {
+    return document.getElementById(canvasId) as HTMLCanvasElement | null;
+}
+
+export function createWebCanvas(width: number, height: number): HTMLCanvasElement {
+    const canvas = document.createElement('canvas');
+    canvas.width = width;
+    canvas.height = height;
+    return canvas;
+}