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MethodChannel pangolin/vpn (start/stop/getStatus/selectOutbound/ getActiveOutbound/setKillSwitch) + 双 EventChannel (status/stats) 契约定义在 lib/bridge/vpn_bridge.dart 头部注释冻结。 - Dart: VpnBridge 抽象接口 + VpnNativeBridge 原生实现 + VpnBridgeMock 假内核(含 connectDelay/statsInterval 可配参数) - Dart 桌面: kernel_process.dart KernelProcess/ClashApiClient 接口骨架 - Android: PangolinVpnService (VpnService 骨架 + 前台通知占位) + VpnEventBus 解耦总线 + MainActivity MethodChannel/EventChannel 注册 - iOS: PacketTunnelProvider (NEPacketTunnelProvider 骨架) + VpnManager (NETunnelProviderManager + NEVPNStatus 订阅) + AppDelegate 通道注册 + Xcode project.pbxproj 添加 PacketTunnel extension target - Widget: VpnStatus enum 迁移至 bridge/vpn_bridge.dart (+error 态), connect_button/home_shell 更新穷举匹配 - Test: test/bridge/vpn_bridge_mock_test.dart 覆盖 start→connecting→on →stop→off 序列、stats 周期推帧、selectOutbound 重连序列、schema 回测 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>