修复：为 user-svc 添加健康检查和启动顺序控制

backend/gateway/internal/router/router.go

@@ -1,12 +1,11 @@
 package router
 
 import (
-	"encoding/json"
 	"log"
 	"net/http"
 
-	"backend/gateway/internal/service"
-	"backend/gateway/internal/ws"
+	"gateway/internal/service"
+	"gateway/internal/ws"
 
 	"github.com/gorilla/websocket"
 )
@@ -54,11 +53,11 @@ func (r *Router) handleWebSocket(w http.ResponseWriter, req *http.Request) {
 	}
 
 	client := ws.NewClient(r.hub, conn)
-	r.hub.register <- client
+	r.hub.Register <- client
 
 	// 启动客户端的读写协程
-	go client.writePump()
-	go client.readPump()
+	go client.WritePump()
+	go client.ReadPump()
 }
 
 func (r *Router) handleHealth(w http.ResponseWriter, req *http.Request) {