test(integration): 添加 Gateway 接口集成测试

- 添加 6 个卡 Gateway 接口测试（查询状态、流量、实名、获取链接、停机、复机）
- 添加 7 个设备 Gateway 接口测试（查询信息、卡槽、限速、WiFi、切卡、重启、恢复出厂）
- 每个接口测试包含成功场景和权限校验场景
- 更新测试环境初始化，添加 Gateway 客户端 mock 支持
- 所有 13 个接口测试通过

tests/testutils/integ/integration.go

@@ -3,6 +3,7 @@ package integ
 import (
 	"bytes"
 	"context"
+	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/http/httptest"
@@ -12,6 +13,7 @@ import (
 	"time"
 
 	"github.com/break/junhong_cmp_fiber/internal/bootstrap"
+	"github.com/break/junhong_cmp_fiber/internal/gateway"
 	"github.com/break/junhong_cmp_fiber/internal/model"
 	"github.com/break/junhong_cmp_fiber/internal/routes"
 	"github.com/break/junhong_cmp_fiber/pkg/auth"
@@ -76,11 +78,14 @@ func NewIntegrationTestEnv(t *testing.T) *IntegrationTestEnv {
 	logger, _ := zap.NewDevelopment()
 	tokenManager := auth.NewTokenManager(rdb, 24*time.Hour, 7*24*time.Hour)
 
+	gatewayClient := createMockGatewayClient()
+
 	deps := &bootstrap.Dependencies{
-		DB:           tx,
-		Redis:        rdb,
-		Logger:       logger,
-		TokenManager: tokenManager,
+		DB:            tx,
+		Redis:         rdb,
+		Logger:        logger,
+		TokenManager:  tokenManager,
+		GatewayClient: gatewayClient,
 	}
 
 	result, err := bootstrap.Bootstrap(deps)
@@ -106,6 +111,22 @@ func NewIntegrationTestEnv(t *testing.T) *IntegrationTestEnv {
 	return env
 }
 
+func createMockGatewayClient() *gateway.Client {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		resp := gateway.GatewayResponse{
+			Code:    200,
+			Msg:     "success",
+			TraceID: "test-trace-id",
+			Data:    json.RawMessage(`{}`),
+		}
+		json.NewEncoder(w).Encode(resp)
+	}))
+
+	client := gateway.NewClient(server.URL, "test-app-id", "test-app-secret")
+	return client
+}
+
 // AsSuperAdmin 设置当前请求使用超级管理员身份
 // 返回 IntegrationTestEnv 以支持链式调用
 //