合并 main 分支并融合订单列表最小化与 SQL 治理

- Auth/权限中间件取 main 演进版（错误细分、token 来源），保留 dev 的用户 cookie 与登出撤销语义
- 后台订单列表：融合 main 的首页免 COUNT 优化与关键词索引路由，保留 dev 的最小化 AdminOrderListItemDTO（结账明细仍由详情接口返回，同步调整对应集成测试）
- 保留 dev 的 token_version 冻结/解冻递增与 main 的状态变化判断及通知
- 前端：保留 dev 登出接口与 main 的 fetchMe silent 参数、SSE 登录跳转；后台订单表按 dev 最小化 DTO 移除号主到手列

backend/internal/middleware/auth_test.go

@@ -1,6 +1,7 @@
 package middleware
 
 import (
+	"context"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -19,7 +20,7 @@ func TestUserAuthRejectsQueryToken(t *testing.T) {
 	}
 
 	engine := gin.New()
-	engine.GET("/protected", Auth(manager), func(c *gin.Context) {
+	engine.GET("/protected", Auth(manager, nil), func(c *gin.Context) {
 		c.Status(http.StatusNoContent)
 	})
 
@@ -38,3 +39,27 @@ func TestUserAuthRejectsQueryToken(t *testing.T) {
 		t.Fatalf("bearer token status = %d, want %d", bearerResponse.Code, http.StatusNoContent)
 	}
 }
+
+func TestAuthRejectsRevokedUserToken(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	manager := auth.NewJWTManager("test-secret")
+	pair, err := manager.GenerateSubjectPairWithVersion(7, "13900000007", "user", 0)
+	if err != nil {
+		t.Fatalf("生成令牌失败：%v", err)
+	}
+
+	engine := gin.New()
+	engine.GET("/protected", Auth(manager, func(_ context.Context, _ uint64, _ int64) error {
+		return auth.ErrTokenVersionMismatch
+	}), func(c *gin.Context) {
+		c.Status(http.StatusNoContent)
+	})
+	request := httptest.NewRequest(http.MethodGet, "/protected", nil)
+	request.Header.Set("Authorization", "Bearer "+pair.AccessToken)
+	response := httptest.NewRecorder()
+	engine.ServeHTTP(response, request)
+
+	if response.Code != http.StatusUnauthorized {
+		t.Fatalf("响应状态 = %d, want %d", response.Code, http.StatusUnauthorized)
+	}
+}