fix: 清理导出服务日志并简化whisper接口参数

- 移除exportService中的冗余console日志输出
- 简化whisper API接口，移除downloadModel和getModelStatus的payload参数
- 清理图片、表情、语音导出过程中的调试日志
- 移除数据库查询和媒体处理中的详细日志记录
- 优化代码可读性，减少控制台输出噪音

electron/preload.ts

@@ -184,10 +184,10 @@ contextBridge.exposeInMainWorld('electronAPI', {
   },
 
   whisper: {
-    downloadModel: (payload: { modelName: string; downloadDir?: string; source?: string }) =>
-      ipcRenderer.invoke('whisper:downloadModel', payload),
-    getModelStatus: (payload: { modelName: string; downloadDir?: string }) =>
-      ipcRenderer.invoke('whisper:getModelStatus', payload),
+    downloadModel: () =>
+      ipcRenderer.invoke('whisper:downloadModel'),
+    getModelStatus: () =>
+      ipcRenderer.invoke('whisper:getModelStatus'),
     onDownloadProgress: (callback: (payload: { modelName: string; downloadedBytes: number; totalBytes?: number; percent?: number }) => void) => {
       ipcRenderer.on('whisper:downloadProgress', (_, payload) => callback(payload))
       return () => ipcRenderer.removeAllListeners('whisper:downloadProgress')