Function registerIconProtocolForSession

src/main/core/iconProtocol.ts:114–143

(targetSession: Electron.Session)

 * 供内置插件使用（外部插件不需要访问应用图标）
 */
export function registerIconProtocolForSession(targetSession: Electron.Session): void {
  if (targetSession.protocol.isProtocolHandled('ztools-icon')) {
    return
  }

  targetSession.protocol.handle('ztools-icon', async (request) => {
    try {
      const urlPath = request.url.replace('ztools-icon://', '')
      const iconPath = decodeURIComponent(urlPath)

      // 命中内存缓存：刷新 LRU 并返回
      const cached = iconMemoryCache.get(iconPath)
      if (cached) {
        setIconCache(iconPath, cached)
        return createIconResponse(cached)
      }

      // 未命中：通过串行队列提取图标
      const buffer = await extractIconQueued(iconPath)

      // 写入内存缓存
      setIconCache(iconPath, buffer)

      return createIconResponse(buffer)
    } catch (error) {
      console.error('[Main] 图标提取失败:', error)
      return new Response('Icon Error', { status: 404 })
    }
  })
}