feat(03-gateway-route-update): extend GwTenantRoute and delete obsolete entities

- Add Methods, Hosts, Headers, LoadBalancingPolicy, AuthorizationPolicy, CorsPolicy, Transforms fields to GwTenantRoute
- Delete GwTenant entity (use Platform.Tenant instead)
- Delete GwServiceInstance entity (use GwCluster embedded Destination)

Fengling.Platform.Domain/AggregatesModel/GatewayAggregate/GwServiceInstance.cs

@@ -1,69 +0,0 @@
-namespace Fengling.Platform.Domain.AggregatesModel.GatewayAggregate;
-
-/// <summary>
-/// 网关服务实例实体 - 表示负载均衡的服务实例
-/// </summary>
-public class GwServiceInstance
-{
-    public string Id { get; set; } = Guid.CreateVersion7().ToString("N");
-    
-    /// <summary>
-    /// 集群ID
-    /// </summary>
-    public string ClusterId { get; set; } = string.Empty;
-    
-    /// <summary>
-    /// 目标ID
-    /// </summary>
-    public string DestinationId { get; set; } = string.Empty;
-    
-    /// <summary>
-    /// 地址
-    /// </summary>
-    public string Address { get; set; } = string.Empty;
-    
-    /// <summary>
-    /// 健康状态
-    /// </summary>
-    public int Health { get; set; } = 1;
-    
-    /// <summary>
-    /// 权重
-    /// </summary>
-    public int Weight { get; set; } = 1;
-    
-    /// <summary>
-    /// 状态
-    /// </summary>
-    public int Status { get; set; } = 1;
-    
-    /// <summary>
-    /// 创建人ID
-    /// </summary>
-    public long? CreatedBy { get; set; }
-    
-    /// <summary>
-    /// 创建时间
-    /// </summary>
-    public DateTime CreatedTime { get; set; } = DateTime.UtcNow;
-    
-    /// <summary>
-    /// 更新人ID
-    /// </summary>
-    public long? UpdatedBy { get; set; }
-    
-    /// <summary>
-    /// 更新时间
-    /// </summary>
-    public DateTime? UpdatedTime { get; set; }
-    
-    /// <summary>
-    /// 是否删除
-    /// </summary>
-    public bool IsDeleted { get; set; } = false;
-    
-    /// <summary>
-    /// 版本号，用于乐观并发
-    /// </summary>
-    public int Version { get; set; } = 0;
-}

Fengling.Platform.Domain/AggregatesModel/GatewayAggregate/GwTenant.cs

@@ -1,54 +0,0 @@
-namespace Fengling.Platform.Domain.AggregatesModel.GatewayAggregate;
-
-/// <summary>
-/// 网关租户实体 - 表示租户在网关中的配置
-/// </summary>
-public class GwTenant
-{
-    public long Id { get; set; }
-    
-    /// <summary>
-    /// 租户代码
-    /// </summary>
-    public string TenantCode { get; set; } = string.Empty;
-    
-    /// <summary>
-    /// 租户名称
-    /// </summary>
-    public string TenantName { get; set; } = string.Empty;
-    
-    /// <summary>
-    /// 状态
-    /// </summary>
-    public int Status { get; set; } = 1;
-    
-    /// <summary>
-    /// 创建人ID
-    /// </summary>
-    public long? CreatedBy { get; set; }
-    
-    /// <summary>
-    /// 创建时间
-    /// </summary>
-    public DateTime CreatedTime { get; set; } = DateTime.UtcNow;
-    
-    /// <summary>
-    /// 更新人ID
-    /// </summary>
-    public long? UpdatedBy { get; set; }
-    
-    /// <summary>
-    /// 更新时间
-    /// </summary>
-    public DateTime? UpdatedTime { get; set; }
-    
-    /// <summary>
-    /// 是否删除
-    /// </summary>
-    public bool IsDeleted { get; set; } = false;
-    
-    /// <summary>
-    /// 版本号，用于乐观并发
-    /// </summary>
-    public int Version { get; set; } = 0;
-}

Fengling.Platform.Domain/AggregatesModel/GatewayAggregate/GwTenantRoute.cs

@@ -71,4 +71,45 @@ public class GwTenantRoute
     /// 版本号，用于乐观并发
     /// </summary>
     public int Version { get; set; } = 0;
+
+    // ===== 路由匹配能力 =====
+
+    /// <summary>
+    /// HTTP 方法匹配（如 "GET,POST"）
+    /// </summary>
+    public string? Methods { get; set; }
+
+    /// <summary>
+    /// Host 头匹配（如 "api.example.com"）
+    /// </summary>
+    public string? Hosts { get; set; }
+
+    /// <summary>
+    /// Header 匹配规则（JSON 格式）
+    /// </summary>
+    public string? Headers { get; set; }
+
+    // ===== 策略配置 =====
+
+    /// <summary>
+    /// 路由级别负载均衡策略覆盖
+    /// </summary>
+    public string? LoadBalancingPolicy { get; set; }
+
+    /// <summary>
+    /// 授权策略
+    /// </summary>
+    public string? AuthorizationPolicy { get; set; }
+
+    /// <summary>
+    /// CORS 策略
+    /// </summary>
+    public string? CorsPolicy { get; set; }
+
+    // ===== 请求转换 =====
+
+    /// <summary>
+    /// 请求/响应转换规则（JSON 格式）
+    /// </summary>
+    public string? Transforms { get; set; }
 }