feat: FunConnect v1.0.0 - Minecraft联机平台完整版

- server: Node.js TCP中继服务器，支持多节点集群
- web: React管理面板（仪表盘、房间管理、节点管理）
- client: Electron桌面客户端（连接、创建/加入房间、本地代理）
- deploy: Ubuntu一键部署脚本

client/src/main/local-proxy.ts

@@ -0,0 +1,77 @@
+import * as net from 'net';
+import { RelayClient } from './relay-client';
+
+export class LocalProxy {
+  private server: net.Server | null = null;
+  private connections: Set<net.Socket> = new Set();
+
+  constructor(
+    private port: number,
+    private relayClient: RelayClient
+  ) {}
+
+  start(): Promise<void> {
+    return new Promise((resolve, reject) => {
+      this.server = net.createServer((clientSocket) => {
+        this.connections.add(clientSocket);
+
+        // Connect to relay for this MC client
+        const relaySocket = this.relayClient.getSocket();
+        if (!relaySocket || !this.relayClient.isConnected()) {
+          clientSocket.destroy();
+          return;
+        }
+
+        // Forward MC client data to relay
+        clientSocket.on('data', (data) => {
+          if (this.relayClient.isConnected()) {
+            this.relayClient.write(data);
+          }
+        });
+
+        // Forward relay data back to MC client
+        this.relayClient.onData((data) => {
+          if (!clientSocket.destroyed) {
+            clientSocket.write(data);
+          }
+        });
+
+        clientSocket.on('close', () => {
+          this.connections.delete(clientSocket);
+        });
+
+        clientSocket.on('error', () => {
+          this.connections.delete(clientSocket);
+        });
+      });
+
+      this.server.on('error', (err) => {
+        reject(err);
+      });
+
+      this.server.listen(this.port, '127.0.0.1', () => {
+        console.log(`[LocalProxy] Listening on 127.0.0.1:${this.port}`);
+        resolve();
+      });
+    });
+  }
+
+  stop(): void {
+    for (const conn of this.connections) {
+      conn.destroy();
+    }
+    this.connections.clear();
+    if (this.server) {
+      this.server.close();
+      this.server = null;
+    }
+  }
+
+  getPort(): number {
+    return this.port;
+  }
+
+  getConnectionCount(): number {
+    return this.connections.size;
+  }
+}