refactor: 系统权限模块重构，迁移至PostgreSQL并对齐新设计

- 切换数据库为PostgreSQL，更新依赖与配置
- 重构权限体系，使用sys_user/sys_role/sys_menu等新实体替代旧模型
- 移除旧的用户角色/权限/系统设置相关代码与实体
- 新增字典、菜单管理模块与基础CRUD接口
- 优化鉴权逻辑，基于菜单权限标识进行接口校验
- 前端同步更新API、路由与权限控制逻辑
- 删除冗余的v-permission指令与相关代码

server/src/entity/sysOperationLog.entity.ts

@@ -0,0 +1,62 @@
+import { Column, Model, Table, DataType, CreatedAt } from "sequelize-typescript";
+
+@Table({
+	tableName: "sys_operation_log",
+	comment: "系统操作日志表",
+	timestamps: true,
+	createdAt: "created_at",
+	updatedAt: false
+})
+export default class SysOperationLog extends Model {
+	@Column({
+		type: DataType.BIGINT,
+		autoIncrement: true,
+		primaryKey: true
+	})
+	id!: number;
+
+	@Column({
+		type: DataType.BIGINT,
+		field: "user_id",
+		comment: "操作用户ID"
+	})
+	userId!: number;
+
+	@Column({
+		type: DataType.STRING(64),
+		field: "module",
+		comment: "操作模块"
+	})
+	module!: string;
+
+	@Column({
+		type: DataType.STRING(64),
+		field: "action",
+		comment: "操作动作"
+	})
+	action!: string;
+
+	@Column({
+		type: DataType.STRING(256),
+		field: "method",
+		comment: "请求方法(GET/POST/PUT/DELETE等)"
+	})
+	method!: string;
+
+	@Column({
+		type: DataType.TEXT,
+		field: "params",
+		comment: "请求参数(JSON格式)"
+	})
+	params!: string;
+
+	@Column({
+		type: DataType.STRING(64),
+		field: "ip",
+		comment: "操作IP(支持IPv6)"
+	})
+	ip!: string;
+
+	@CreatedAt
+	created_at!: Date;
+}