refactor: 重构 Manager 架构，引入 ManagerRegistry 和 BaseManager 基类

- 新增 ManagerRegistry 单例注册表，统一管理所有 Manager 实例
- 新增 BaseManager 基类，自动管理事件订阅清理
- 新增 BaseDialogManager 基类，统一对话框生命周期管理
- 重构 15 个 Manager 使用新基类
- 重构 Toolbar 按钮和 Menu 按钮移除 engine 参数依赖
- 删除 BimComponent 基类（已不再使用）
- 为所有 Manager 和核心模块添加中文 JSDoc 注释

src/components/button-group/index.ts

@@ -10,12 +10,9 @@ import { t, localeManager } from '../../services/locale';
 import { themeManager } from '../../services/theme';
 import type { ThemeConfig } from '../../themes/types';
 import { IBimComponent } from '../../types/component';
-import type { BimEngine } from '../../bim-engine';
+import { ManagerRegistry } from '../../core/manager-registry';
 import { EngineEvents } from '../../types/events';
 
-/**
- * 通用按钮组组件 (BimButtonGroup)
- */
 export class BimButtonGroup implements IBimComponent {
     private container: HTMLElement;
     private options: ButtonGroupOptions;
@@ -24,12 +21,10 @@ export class BimButtonGroup implements IBimComponent {
     private btnRefs: Map<string, HTMLElement> = new Map();
     private dropdownElement: HTMLElement | null = null;
     private hoverTimeout: number | null = null;
-    private customColors: Set<keyof ButtonGroupColors> = new Set(); // 记录用户自定义的颜色属性
+    private customColors: Set<keyof ButtonGroupColors> = new Set();
     private unsubscribeLocale: (() => void) | null = null;
     private unsubscribeTheme: (() => void) | null = null;
 
-    protected engine: BimEngine | null = null;
-
     private readonly DEFAULT_ICON = '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><rect x="3" y="3" width="18" height="18" rx="2" ry="2"></rect></svg>';
 
     constructor(options: ButtonGroupOptions) {
@@ -67,16 +62,9 @@ export class BimButtonGroup implements IBimComponent {
         this.applyStyles();
     }
 
-    public setEngine(engine: BimEngine) {
-        this.engine = engine;
-    }
-
     protected emit<K extends keyof EngineEvents>(event: K, payload: EngineEvents[K]) {
-        if (this.engine) {
-            this.engine.emit(event, payload);
-        } else {
-            console.warn('[BimButtonGroup] Engine not set, cannot emit event:', event);
-        }
+        const registry = ManagerRegistry.getInstance();
+        registry.emit(event, payload);
     }
 
     private initContainer(): void {