fix(mpc-system): 修复服务 gRPC/HTTP 端口冲突

问题:
- session-coordinator 和 message-router 都默认使用 gRPC 50051
- 端口冲突导致 message-router 无法启动
- server-party 因无法连接 message-router 而失败

修复:
为每个服务分配独立的端口:
- account-service: HTTP 8080
- session-coordinator: gRPC 50051, HTTP 8081
- message-router: gRPC 50052, HTTP 8082
- server-party-1: HTTP 8083
- server-party-2: HTTP 8084
- server-party-3: HTTP 8085

服务器修复步骤:
  git pull
  sudo bash scripts/deploy.sh build   # 重新生成 systemd 服务文件
  sudo bash scripts/deploy.sh restart
  sudo bash scripts/deploy.sh status

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

backend/mpc-system/scripts/deploy.sh

@@ -267,11 +267,12 @@ create_systemd_services() {
     log_info "Creating systemd service files..."
 
     # Common service template
+    # Args: SERVICE_NAME, DESCRIPTION, EXEC_START, EXTRA_ENV (optional)
     create_service_file() {
         local SERVICE_NAME=$1
         local DESCRIPTION=$2
         local EXEC_START=$3
-        local PARTY_ID=$4
+        local EXTRA_ENV=$4
 
         cat > "/etc/systemd/system/$SERVICE_NAME.service" << EOF
 [Unit]
@@ -285,7 +286,7 @@ User=$MPC_USER
 Group=$MPC_GROUP
 WorkingDirectory=$MPC_HOME
 EnvironmentFile=$CONFIG_DIR/mpc.env
-${PARTY_ID:+Environment=PARTY_ID=$PARTY_ID}
+${EXTRA_ENV:+$EXTRA_ENV}
 ExecStart=$EXEC_START
 Restart=always
 RestartSec=5
@@ -303,13 +304,34 @@ WantedBy=multi-user.target
 EOF
     }
 
-    # Create service files
-    create_service_file "mpc-account" "Account Service" "$BIN_DIR/account-service"
-    create_service_file "mpc-session-coordinator" "Session Coordinator" "$BIN_DIR/session-coordinator"
-    create_service_file "mpc-message-router" "Message Router" "$BIN_DIR/message-router"
-    create_service_file "mpc-server-party-1" "Server Party 1" "$BIN_DIR/server-party" "server-party-1"
-    create_service_file "mpc-server-party-2" "Server Party 2" "$BIN_DIR/server-party" "server-party-2"
-    create_service_file "mpc-server-party-3" "Server Party 3" "$BIN_DIR/server-party" "server-party-3"
+    # Create service files with different gRPC ports to avoid conflicts
+    # session-coordinator: gRPC 50051, HTTP 8081
+    # message-router: gRPC 50052, HTTP 8082
+    # server-party-1/2/3: HTTP 8083/8084/8085
+    # account-service: HTTP 8080
+
+    create_service_file "mpc-account" "Account Service" "$BIN_DIR/account-service" \
+        "Environment=MPC_SERVER_HTTP_PORT=8080"
+
+    create_service_file "mpc-session-coordinator" "Session Coordinator" "$BIN_DIR/session-coordinator" \
+        "Environment=MPC_SERVER_GRPC_PORT=50051
+Environment=MPC_SERVER_HTTP_PORT=8081"
+
+    create_service_file "mpc-message-router" "Message Router" "$BIN_DIR/message-router" \
+        "Environment=MPC_SERVER_GRPC_PORT=50052
+Environment=MPC_SERVER_HTTP_PORT=8082"
+
+    create_service_file "mpc-server-party-1" "Server Party 1" "$BIN_DIR/server-party" \
+        "Environment=PARTY_ID=server-party-1
+Environment=MPC_SERVER_HTTP_PORT=8083"
+
+    create_service_file "mpc-server-party-2" "Server Party 2" "$BIN_DIR/server-party" \
+        "Environment=PARTY_ID=server-party-2
+Environment=MPC_SERVER_HTTP_PORT=8084"
+
+    create_service_file "mpc-server-party-3" "Server Party 3" "$BIN_DIR/server-party" \
+        "Environment=PARTY_ID=server-party-3
+Environment=MPC_SERVER_HTTP_PORT=8085"
 
     # Reload systemd
     systemctl daemon-reload