refactor(platform): 重构菜单表结构并统一命名规范

- 移除旧版 PascalCase 列名的 menus 表
- 创建符合 snake_case 规范的新 menus 表结构
- 添加完整的菜单字段包括 ID、名称、路径、组件、重定向等
- 实现菜单层级关系的父子关联外键约束
- 增加菜单权限控制相关字段如角色授权、可见性等
- 统一时间戳和软删除标准字段
- 创建菜单编码唯一索引和父级关联索引

src/modules/platform/Infrastructure/Migrations/20260703084733_AddMenuCode.cs

@@ -1,4 +1,5 @@
-using Microsoft.EntityFrameworkCore.Migrations;
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
 
 #nullable disable
 
@@ -10,20 +11,61 @@ namespace Platform.Infrastructure.Migrations
         /// <inheritdoc />
         protected override void Up(MigrationBuilder migrationBuilder)
         {
-            migrationBuilder.AddColumn<string>(
-                name: "code",
-                table: "menus",
-                type: "character varying(100)",
-                maxLength: 100,
-                nullable: false,
-                defaultValue: "",
-                comment: "菜单编码，点号分层（system / system.user），全局唯一");
+            // 历史库的 menus 表由旧版本（PascalCase 列名）创建，与当前 EF 模型（snake_case）
+            // 完全不匹配，且数据为旧业务残留（点单台/租号监控等，path 在当前前端不存在）。
+            // 菜单是配置型数据，这里 DROP 旧表并按当前 snake_case 模型重建，由 SeedMenusAsync 重新播种。
+            migrationBuilder.Sql("DROP TABLE IF EXISTS menus;");
+
+            migrationBuilder.CreateTable(
+                name: "menus",
+                columns: table => new
+                {
+                    id = table.Column<Guid>(type: "uuid", nullable: false, comment: "菜单ID"),
+                    name = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false, comment: "菜单名称（路由name）"),
+                    path = table.Column<string>(type: "character varying(200)", maxLength: 200, nullable: false, comment: "路由路径"),
+                    component = table.Column<string>(type: "character varying(200)", maxLength: 200, nullable: true, comment: "前端组件路径"),
+                    redirect = table.Column<string>(type: "character varying(200)", maxLength: 200, nullable: true, comment: "重定向路径"),
+                    parent_id = table.Column<Guid>(type: "uuid", nullable: true, comment: "父菜单ID，null表示顶级菜单"),
+                    title = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false, comment: "菜单显示标题"),
+                    code = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false, comment: "菜单编码，点号分层（system / system.user），全局唯一"),
+                    icon = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: true, comment: "菜单图标"),
+                    active_icon = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: true, comment: "菜单激活状态图标"),
+                    order = table.Column<int>(type: "integer", nullable: false, comment: "排序序号，值越小越靠前"),
+                    hide_in_menu = table.Column<bool>(type: "boolean", nullable: false, comment: "是否在菜单中隐藏"),
+                    keep_alive = table.Column<bool>(type: "boolean", nullable: true, comment: "是否缓存页面状态"),
+                    affix_tab = table.Column<bool>(type: "boolean", nullable: true, comment: "是否固定标签页"),
+                    link = table.Column<string>(type: "character varying(500)", maxLength: 500, nullable: true, comment: "外链地址"),
+                    no_basic_layout = table.Column<bool>(type: "boolean", nullable: false, comment: "是否不使用基础布局"),
+                    menu_visible_with_forbidden = table.Column<bool>(type: "boolean", nullable: false, comment: "无权限时是否仍显示菜单"),
+                    authority = table.Column<string>(type: "character varying(200)", maxLength: 200, nullable: true, comment: "允许访问的角色名，逗号分隔，为空表示所有已认证用户可访问"),
+                    created_by = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false, comment: "创建人"),
+                    created_at = table.Column<DateTime>(type: "timestamp with time zone", nullable: false, comment: "创建时间"),
+                    updated_by = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false, comment: "更新人"),
+                    updated_at = table.Column<DateTime>(type: "timestamp with time zone", nullable: false, comment: "更新时间"),
+                    is_deleted = table.Column<bool>(type: "boolean", nullable: false, defaultValue: false, comment: "是否已软删除"),
+                    operator_ip = table.Column<string>(type: "character varying(50)", maxLength: 50, nullable: false, comment: "操作者IP地址")
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("pk_menus", x => x.id);
+                    table.ForeignKey(
+                        name: "fk_menus_menus_parent_id",
+                        column: x => x.parent_id,
+                        principalTable: "menus",
+                        principalColumn: "id",
+                        onDelete: ReferentialAction.Cascade);
+                });
 
             migrationBuilder.CreateIndex(
                 name: "ix_menus_code",
                 table: "menus",
                 column: "code",
                 unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "ix_menus_parent_id",
+                table: "menus",
+                column: "parent_id");
         }
 
         /// <inheritdoc />