feat: 网关管理模块 + RBAC权限认证 + 组织架构 + 审计日志

- 网关管理：GatewayEntity/Service/Controller CRUD + 测试连接；设备 GatewayId 外键关联
- JWT 认证：登录签发 Token（权限编码写入 Claims）、RequirePermission 权限过滤器、CurrentUser 上下文
- RBAC：用户/角色/权限实体与 CRUD，预定义 4 角色 + 6 权限种子（admin/admin123）
- 组织架构：sys_org 固定层级树（公司/实验室/部门/班组白夜班），层级校验，用户挂 OrgId/岗位/技能标签
- 数据权限：角色 DataScope（全部/本组织及下级），用户列表按组织子树过滤
- 防锁死保护：禁止删/禁自己，保证至少一名活跃管理员，角色摘除 user:manage 前校验
- 审计日志：AuditRecorder 接入设备增删改/指令下发/登录登出/组织变更，AuditController 查询
- 设备指令下发按网关表取连接参数；设备列表支持 gatewayId/productId 筛选

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Model/Entity/System/OrgEntity.cs

@@ -0,0 +1,40 @@
+using SqlSugar;
+
+namespace Model.Entity.System
+{
+    /// <summary>
+    /// 组织架构表（树形：公司/实验室/部门/班组，ParentId 自关联；班组带白/夜班）
+    /// </summary>
+    [SugarTable("sys_org")]
+    public class OrgEntity : BaseEntity
+    {
+        [SugarColumn(ColumnName = "ParentId", ColumnDescription = "父级组织Id（0=根节点）", DefaultValue = "0")]
+        public long ParentId { get; set; }
+
+        [SugarColumn(ColumnName = "Name", ColumnDescription = "组织名称", Length = 100, IsNullable = false)]
+        public string Name { get; set; }
+
+        [SugarColumn(ColumnName = "Code", ColumnDescription = "组织编码（唯一）", Length = 64, IsNullable = false)]
+        public string Code { get; set; }
+
+        /// <summary>组织类型：1=公司, 2=实验室, 3=部门, 4=班组</summary>
+        [SugarColumn(ColumnName = "OrgType", ColumnDescription = "组织类型（1公司/2实验室/3部门/4班组）", ColumnDataType = "smallint", DefaultValue = "3")]
+        public byte OrgType { get; set; }
+
+        /// <summary>班组班次：0=非班组, 1=白班, 2=夜班</summary>
+        [SugarColumn(ColumnName = "ShiftType", ColumnDescription = "班次（0非班组/1白班/2夜班）", ColumnDataType = "smallint", DefaultValue = "0")]
+        public byte ShiftType { get; set; }
+
+        [SugarColumn(ColumnName = "Leader", ColumnDescription = "负责人", Length = 50, IsNullable = true)]
+        public string? Leader { get; set; }
+
+        [SugarColumn(ColumnName = "Phone", ColumnDescription = "联系电话", Length = 20, IsNullable = true)]
+        public string? Phone { get; set; }
+
+        [SugarColumn(ColumnName = "Sort", ColumnDescription = "排序号", DefaultValue = "0")]
+        public int Sort { get; set; }
+
+        [SugarColumn(ColumnName = "Remark", ColumnDescription = "备注", Length = 500, IsNullable = true)]
+        public string? Remark { get; set; }
+    }
+}