v0.6.0: beautifului 整合 + 会话/工作区/队列/权限/命令/附件全链路

- beautifului.dev 组件直连：Sidebar Nav、Tool Chips、Approval Card（抽屉化）、Streaming/Thinking、Code Block、Selection Actions、Prompt Bar、Search

apps/desktop/vite.preview.config.ts

@@ -0,0 +1,21 @@
+// 预览页构建配置（独立于 electron-vite；仅用于视觉验收 beautifului 组件）
+import { resolve } from 'node:path'
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+import tailwindcss from '@tailwindcss/vite'
+
+export default defineConfig({
+  root: 'preview',
+  plugins: [react(), tailwindcss()],
+  resolve: {
+    alias: {
+      '@': resolve(__dirname, 'src/renderer/src'),
+      '@renderer': resolve(__dirname, 'src/renderer/src'),
+      '@shared': resolve(__dirname, 'src/shared')
+    }
+  },
+  build: {
+    outDir: '../out/preview',
+    emptyOutDir: true
+  }
+})