refactor: 重命名SDK为iflow-engine，使用npm包引入第三方引擎

- 将包名从 @fishdingding/bim-engine-sdk 改为 iflow-engine
- 将构建输出文件从 bim-engine-sdk.*.js 改为 iflow-engine.*.js
- 将全局变量从 LyzBimEngineSDK 改为 IflowEngine
- 将第三方引擎SDK从本地引入改为npm包引入 (iflow-engine-base)
- 移除本地 src/engine_base 目录，移至回收站
- 更新所有文档和demo中的引用

src/themes/presets.ts

@@ -1,7 +1,7 @@
 import { ThemeConfig } from './types';
 
 /**
- * Tailwind CSS Color Palette Reference (for maintainers)
+ * Tailwind CSS 调色板参考（维护者参考）
  * 
  * Slate: #f8fafc #f1f5f9 #e2e8f0 #cbd5e1 #94a3b8 #64748b #475569 #334155 #1e293b #0f172a
  * Blue:  #eff6ff #dbeafe #bfdbfe #93c5fd #60a5fa #3b82f6 #2563eb #1d4ed8 #1e40af #1e3a8a
@@ -94,6 +94,17 @@ export const lightTheme: ThemeConfig = {
     floatingIconColor: '#334155',
     floatingIconColorHover: '#1e293b',
 
+    panelBg: 'rgba(255, 255, 255, 0.95)',
+    panelBorder: 'rgba(226, 232, 240, 0.6)',
+    panelHeaderBg: 'rgba(248, 250, 252, 0.9)',
+    panelRadius: '12px',
+
+    tabBg: '#f1f5f9',
+    tabItemBg: 'transparent',
+    tabItemBgHover: 'rgba(255, 255, 255, 0.6)',
+    tabItemBgActive: '#ffffff',
+    tabItemTextActive: '#2563eb',
+
     overrides: {
         dialog: {
             headerBg: '#f8fafc',
@@ -195,6 +206,17 @@ export const darkTheme: ThemeConfig = {
     floatingIconColor: '#e2e8f0',
     floatingIconColorHover: '#f8fafc',
 
+    panelBg: 'rgba(15, 23, 42, 0.95)',
+    panelBorder: 'rgba(51, 65, 85, 0.5)',
+    panelHeaderBg: 'rgba(15, 23, 42, 0.9)',
+    panelRadius: '12px',
+
+    tabBg: 'rgba(30, 41, 59, 0.6)',
+    tabItemBg: 'transparent',
+    tabItemBgHover: 'rgba(51, 65, 85, 0.5)',
+    tabItemBgActive: 'rgba(51, 65, 85, 0.8)',
+    tabItemTextActive: '#60a5fa',
+
     overrides: {
         dialog: {
             headerBg: '#0f172a',

src/themes/types.ts

@@ -253,6 +253,34 @@ export interface ThemeConfig {
     /** 浮动组件图标悬停颜色 */
     floatingIconColorHover: ColorToken;
 
+    // =========================================================================
+    // Panel Layer (对话框、面板等容器)
+    // =========================================================================
+
+    /** 面板背景 (支持毛玻璃) */
+    panelBg: ColorToken;
+    /** 面板边框 */
+    panelBorder: ColorToken;
+    /** 面板 Header 背景 */
+    panelHeaderBg: ColorToken;
+    /** 面板圆角 */
+    panelRadius: string;
+
+    // =========================================================================
+    // Tab Component (选项卡)
+    // =========================================================================
+
+    /** Tab 容器背景 */
+    tabBg: ColorToken;
+    /** Tab 项背景 */
+    tabItemBg: ColorToken;
+    /** Tab 项悬停背景 */
+    tabItemBgHover: ColorToken;
+    /** Tab 激活项背景 */
+    tabItemBgActive: ColorToken;
+    /** Tab 激活项文字颜色 */
+    tabItemTextActive: ColorToken;
+
     // =========================================================================
     // Specific Component Overrides (Optional)
     // These allow fine-grained control when semantic tokens aren't enough
@@ -409,6 +437,19 @@ export const CSS_VAR_MAP: Record<keyof Omit<ThemeConfig, 'name' | 'overrides'>,
     floatingBtnShadowHover: '--bim-floating-btn-shadow-hover',
     floatingIconColor: '--bim-floating-icon-color',
     floatingIconColorHover: '--bim-floating-icon-color-hover',
+
+    // Panel
+    panelBg: '--bim-panel-bg',
+    panelBorder: '--bim-panel-border',
+    panelHeaderBg: '--bim-panel-header-bg',
+    panelRadius: '--bim-panel-radius',
+
+    // Tab
+    tabBg: '--bim-tab-bg',
+    tabItemBg: '--bim-tab-item-bg',
+    tabItemBgHover: '--bim-tab-item-bg-hover',
+    tabItemBgActive: '--bim-tab-item-bg-active',
+    tabItemTextActive: '--bim-tab-item-text-active',
 };
 
 // ============================================================================