feat: v0.2.0 导出差异报告 - HTML/纯文本/Markdown 三种格式

src/main/index.ts

@@ -88,6 +88,22 @@ ipcMain.handle('file:decode-buffer', (_event, buffer: ArrayBuffer) => {
   return decodeText(Buffer.from(buffer))
 })
 
+/** IPC: 保存差异报告（系统保存对话框 + 写入内容） */
+ipcMain.handle('file:save-report', async (_event, content: string, defaultName: string) => {
+  const ext = defaultName.split('.').pop() ?? 'txt'
+  const result = await dialog.showSaveDialog({
+    title: '保存差异报告',
+    defaultPath: join(app.getPath('documents'), defaultName),
+    filters: [
+      { name: '差异报告', extensions: [ext] },
+      { name: '所有文件', extensions: ['*'] }
+    ]
+  })
+  if (result.canceled || !result.filePath) return { ok: false, path: null }
+  fs.writeFileSync(result.filePath, content, 'utf-8')
+  return { ok: true, path: result.filePath }
+})
+
 /** IPC: 打开系统文件管理器定位文件 */
 ipcMain.handle('file:show-in-folder', (_event, filePath: string) => {
   shell.showItemInFolder(filePath)