fix: v0.2.5 一致性与边角修复 - 右键菜单边缘防溢出、粘贴10MB防护、拖拽失败提示、多文件提示、剪贴板走主进程IPC、主进程异步读取

src/main/index.ts

@@ -102,11 +102,11 @@ ipcMain.handle('file:open', async (_event, side: 'left' | 'right' | null) => {
   const name = filePath.split(/[\\/]/).pop() ?? filePath
   let buf: Buffer
   try {
-    const stat = fs.statSync(filePath)
+    const stat = await fs.promises.stat(filePath)
     if (stat.size > MAX_FILE_SIZE) {
       return { error: 'too-large', name, size: stat.size }
     }
-    buf = fs.readFileSync(filePath)
+    buf = await fs.promises.readFile(filePath)
   } catch {
     return { error: 'read-failed', name }
   }