修复：Android VPN 子网代理路由未生效的问题#231
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This PR fixes the issue where subnet proxy routes (proxy_cidrs) from EasyTier peers were not being added to the Android VPN TUN interface. Changes: - Rust KVNodeInfo: add proxy_cidrs field - Rust network status: populate proxy_cidrs from peer info - Dart KVNodeInfo: add proxyCidrs field - VpnManager.start(): accept proxyCidrs parameter - ServerConnectionManager: fetch network status on connect to extract peer subnet proxy routes and pass them to VPN service Fixes: VPN connected but unable to access proxied subnets like 192.168.1.0/24
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问题
连接到开启了子网代理的 EasyTier 网络时，Android VPN TUN 接口没有将代理子网（如
192.168.1.0/24）加入路由表，导致无法访问代理子网后的设备。根因
KVNodeInfo结构体缺少proxy_cidrs字段VpnManager.start()未接收代理路由参数_handleSuccessfulConnection()在netStatus尚未填充时就调用 `_extractProxyCidrs()$，导致路由列表为空修改内容
Rust
rust/src/api/simple.rs:KVNodeInfo添加proxy_cidrs: Vec<String>字段rust/src/api/p2p.rs:get_network_status()从node_info.proxy_cidrs填充数据rust/src/frb_generated.rs: 更新 FRB 序列化代码Dart
lib/src/rust/api/simple.dart:KVNodeInfo添加proxyCidrs字段lib/src/rust/frb_generated.dart: 更新 FRB 序列化代码lib/core/services/vpn_manager.dart:start()方法新增List<String> proxyCidrs参数lib/core/services/server_connection_manager.dart: 连接成功后主动调用getNetworkStatus()提取对等节点的proxyCidrs，并传入 VPN 服务测试方法
192.168.1.0/24子网代理的 EasyTier 网络192.168.1.x网段的设备Fixes #issue_number（如适用）