feat(dialog): 实现对话框主题与拖拽功能

frontend/electron/preload.ts

@@ -67,6 +67,11 @@ contextBridge.exposeInMainWorld('electronAPI', {
   showQuestionDialog: (questionData: any) => ipcRenderer.invoke('show-question-dialog', questionData),
   dialogResponse: (messageId: string, choice: boolean) => ipcRenderer.invoke('dialog-response', messageId, choice),
   resizeDialogWindow: (height: number) => ipcRenderer.invoke('resize-dialog-window', height),
+  moveWindow: (deltaX: number, deltaY: number) => ipcRenderer.invoke('move-window', deltaX, deltaY),
+
+  // 主题信息获取
+  getThemeInfo: () => ipcRenderer.invoke('get-theme-info'),
+  getTheme: () => ipcRenderer.invoke('get-theme'),
 
   // 监听下载进度
   onDownloadProgress: (callback: (progress: any) => void) => {