diff --git a/.claude/settings.local.json b/.claude/settings.local.json
new file mode 100644
index 0000000..5707c58
--- /dev/null
+++ b/.claude/settings.local.json
@@ -0,0 +1,7 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(git add:*)"
+    ]
+  }
+}
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..237a0ed
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,66 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Build & Run Commands
+
+```bash
+# Build the project
+./mvnw clean package
+
+# Run the application
+./mvnw spring-boot:run
+
+# Run all tests
+./mvnw test
+
+# Run a single test class
+./mvnw test -Dtest=TestClassName
+
+# Run a single test method
+./mvnw test -Dtest=TestClassName#methodName
+```
+
+## Project Overview
+
+- **Framework**: Spring Boot 3.2.3 with Java 21
+- **ORM**: MyBatis Plus 3.5.5
+- **Database**: MySQL 8.0.33
+- **Cache**: Redis (Spring Data Redis)
+- **API Docs**: Swagger UI at `/swagger-ui.html`
+- **Auth**: JWT (jjwt 0.11.5)
+
+## Architecture
+
+Base package: `icu.sunway.ai_spring_example`
+
+This project follows a layered architecture with MyBatis Plus:
+
+| Layer | Location | Pattern |
+|-------|----------|---------|
+| Controller | `Controller/{EntityName}Controller/` | One subdirectory per entity |
+| Service | `Service/` | Interface `I{Name}Service` extends `IService<Entity>` |
+| Service Impl | `Service/Implements/` | `{Name}ServiceImpl` extends `ServiceImpl<Mapper, Entity>` |
+| Mapper | `Mapper/` | `{Name}Mapper` extends `BaseMapper<Entity>` |
+| Entity | `Entity/` | Lombok + MyBatis Plus annotations |
+| Config | `Config/` | CORS, Security, Redis, OpenAPI |
+| Utils | `Utils/` | Utility classes |
+
+## Key Utilities
+
+- **ResponseUtils**: Standard API responses - `ResponseUtils.success(data)` / `ResponseUtils.fail(message)`
+- **PageUtils**: Pagination - `PageUtils.createPage(page, limit)` returns `Page<T>` for MyBatis Plus
+- **RedisUtils**: Redis operations (inject with `@Resource`)
+- **JsonUtils**: JSON serialization - `JsonUtils.toJson()` / `JsonUtils.toObject()`
+- **ValidationUtils**: Input validation (email, phone, URL, IP, password strength, etc.)
+
+## Configuration
+
+- Copy `application-example.yaml` to `application.yaml` and fill in database/Redis credentials
+- `application.yaml` is gitignored (contains sensitive data)
+- Uses dynamic multi-datasource (primary datasource named "master")
+
+## Security Notes
+
+- Current `SecurityConfig` is permissive (all requests allowed) - configure for production
+- Stateless session management configured for JWT authentication
diff --git a/src/main/java/icu/sunway/ai_spring_example/Controller/PermissionController/PermissionController.java b/src/main/java/icu/sunway/ai_spring_example/Controller/PermissionController/PermissionController.java
new file mode 100644
index 0000000..70a4264
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Controller/PermissionController/PermissionController.java
@@ -0,0 +1,73 @@
+package icu.sunway.ai_spring_example.Controller.PermissionController;
+
+import icu.sunway.ai_spring_example.Entity.Permission;
+import icu.sunway.ai_spring_example.Service.IPermissionService;
+import icu.sunway.ai_spring_example.Utils.ResponseUtils;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import org.springframework.web.bind.annotation.*;
+
+import jakarta.annotation.Resource;
+
+@RestController
+@RequestMapping("/permission")
+public class PermissionController {
+
+    @Resource
+    private IPermissionService permissionService;
+
+    @GetMapping("/{id}")
+    public Object getPermissionById(@PathVariable Long id) {
+        Permission permission = permissionService.getById(id);
+        return ResponseUtils.success(permission);
+    }
+
+    @GetMapping
+    public Object getAllPermissions(
+            @RequestParam(defaultValue = "1") Integer page,
+            @RequestParam(defaultValue = "10") Integer limit) {
+
+        Page<Permission> permissionPage = new Page<>(page, limit);
+        Page<Permission> resultPage = permissionService.page(permissionPage);
+        return ResponseUtils.success(resultPage);
+    }
+
+    @PostMapping
+    public Object createPermission(@RequestBody Permission permission) {
+        boolean result = permissionService.save(permission);
+        if (result) {
+            return ResponseUtils.success(permission);
+        } else {
+            return ResponseUtils.fail("Failed to create permission");
+        }
+    }
+
+    @PutMapping("/{id}")
+    public Object updatePermission(@PathVariable Long id, @RequestBody Permission permission) {
+        permission.setId(id);
+        boolean result = permissionService.updateById(permission);
+        if (result) {
+            return ResponseUtils.success(permission);
+        } else {
+            return ResponseUtils.fail("Failed to update permission");
+        }
+    }
+
+    @DeleteMapping("/{id}")
+    public Object deletePermission(@PathVariable Long id) {
+        boolean result = permissionService.removeById(id);
+        if (result) {
+            return ResponseUtils.success("Permission deleted successfully");
+        } else {
+            return ResponseUtils.fail("Failed to delete permission");
+        }
+    }
+
+    @GetMapping("/name/{name}")
+    public Object getPermissionByName(@PathVariable String name) {
+        QueryWrapper<Permission> wrapper = new QueryWrapper<>();
+        wrapper.eq("name", name);
+        Permission permission = permissionService.getOne(wrapper);
+        return ResponseUtils.success(permission);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Controller/RoleController/RoleController.java b/src/main/java/icu/sunway/ai_spring_example/Controller/RoleController/RoleController.java
new file mode 100644
index 0000000..52bdb82
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Controller/RoleController/RoleController.java
@@ -0,0 +1,73 @@
+package icu.sunway.ai_spring_example.Controller.RoleController;
+
+import icu.sunway.ai_spring_example.Entity.Role;
+import icu.sunway.ai_spring_example.Service.IRoleService;
+import icu.sunway.ai_spring_example.Utils.ResponseUtils;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import org.springframework.web.bind.annotation.*;
+
+import jakarta.annotation.Resource;
+
+@RestController
+@RequestMapping("/role")
+public class RoleController {
+
+    @Resource
+    private IRoleService roleService;
+
+    @GetMapping("/{id}")
+    public Object getRoleById(@PathVariable Long id) {
+        Role role = roleService.getById(id);
+        return ResponseUtils.success(role);
+    }
+
+    @GetMapping
+    public Object getAllRoles(
+            @RequestParam(defaultValue = "1") Integer page,
+            @RequestParam(defaultValue = "10") Integer limit) {
+
+        Page<Role> rolePage = new Page<>(page, limit);
+        Page<Role> resultPage = roleService.page(rolePage);
+        return ResponseUtils.success(resultPage);
+    }
+
+    @PostMapping
+    public Object createRole(@RequestBody Role role) {
+        boolean result = roleService.save(role);
+        if (result) {
+            return ResponseUtils.success(role);
+        } else {
+            return ResponseUtils.fail("Failed to create role");
+        }
+    }
+
+    @PutMapping("/{id}")
+    public Object updateRole(@PathVariable Long id, @RequestBody Role role) {
+        role.setId(id);
+        boolean result = roleService.updateById(role);
+        if (result) {
+            return ResponseUtils.success(role);
+        } else {
+            return ResponseUtils.fail("Failed to update role");
+        }
+    }
+
+    @DeleteMapping("/{id}")
+    public Object deleteRole(@PathVariable Long id) {
+        boolean result = roleService.removeById(id);
+        if (result) {
+            return ResponseUtils.success("Role deleted successfully");
+        } else {
+            return ResponseUtils.fail("Failed to delete role");
+        }
+    }
+
+    @GetMapping("/name/{name}")
+    public Object getRoleByName(@PathVariable String name) {
+        QueryWrapper<Role> wrapper = new QueryWrapper<>();
+        wrapper.eq("name", name);
+        Role role = roleService.getOne(wrapper);
+        return ResponseUtils.success(role);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Controller/RolePermissionController/RolePermissionController.java b/src/main/java/icu/sunway/ai_spring_example/Controller/RolePermissionController/RolePermissionController.java
new file mode 100644
index 0000000..6e2e32b
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Controller/RolePermissionController/RolePermissionController.java
@@ -0,0 +1,82 @@
+package icu.sunway.ai_spring_example.Controller.RolePermissionController;
+
+import icu.sunway.ai_spring_example.Entity.RolePermission;
+import icu.sunway.ai_spring_example.Service.IRolePermissionService;
+import icu.sunway.ai_spring_example.Utils.ResponseUtils;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import org.springframework.web.bind.annotation.*;
+
+import jakarta.annotation.Resource;
+import java.util.List;
+
+@RestController
+@RequestMapping("/role-permission")
+public class RolePermissionController {
+
+    @Resource
+    private IRolePermissionService rolePermissionService;
+
+    @GetMapping("/{id}")
+    public Object getRolePermissionById(@PathVariable Long id) {
+        RolePermission rolePermission = rolePermissionService.getById(id);
+        return ResponseUtils.success(rolePermission);
+    }
+
+    @GetMapping
+    public Object getAllRolePermissions(
+            @RequestParam(defaultValue = "1") Integer page,
+            @RequestParam(defaultValue = "10") Integer limit) {
+
+        Page<RolePermission> rolePermissionPage = new Page<>(page, limit);
+        Page<RolePermission> resultPage = rolePermissionService.page(rolePermissionPage);
+        return ResponseUtils.success(resultPage);
+    }
+
+    @PostMapping
+    public Object createRolePermission(@RequestBody RolePermission rolePermission) {
+        boolean result = rolePermissionService.save(rolePermission);
+        if (result) {
+            return ResponseUtils.success(rolePermission);
+        } else {
+            return ResponseUtils.fail("Failed to create role permission relationship");
+        }
+    }
+
+    @PutMapping("/{id}")
+    public Object updateRolePermission(@PathVariable Long id, @RequestBody RolePermission rolePermission) {
+        rolePermission.setId(id);
+        boolean result = rolePermissionService.updateById(rolePermission);
+        if (result) {
+            return ResponseUtils.success(rolePermission);
+        } else {
+            return ResponseUtils.fail("Failed to update role permission relationship");
+        }
+    }
+
+    @DeleteMapping("/{id}")
+    public Object deleteRolePermission(@PathVariable Long id) {
+        boolean result = rolePermissionService.removeById(id);
+        if (result) {
+            return ResponseUtils.success("Role permission relationship deleted successfully");
+        } else {
+            return ResponseUtils.fail("Failed to delete role permission relationship");
+        }
+    }
+
+    @GetMapping("/role/{roleId}")
+    public Object getRolePermissionsByRoleId(@PathVariable Long roleId) {
+        QueryWrapper<RolePermission> wrapper = new QueryWrapper<>();
+        wrapper.eq("role_id", roleId);
+        List<RolePermission> rolePermissions = rolePermissionService.list(wrapper);
+        return ResponseUtils.success(rolePermissions);
+    }
+
+    @GetMapping("/permission/{permissionId}")
+    public Object getRolePermissionsByPermissionId(@PathVariable Long permissionId) {
+        QueryWrapper<RolePermission> wrapper = new QueryWrapper<>();
+        wrapper.eq("permission_id", permissionId);
+        List<RolePermission> rolePermissions = rolePermissionService.list(wrapper);
+        return ResponseUtils.success(rolePermissions);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Controller/UserController/UserController.java b/src/main/java/icu/sunway/ai_spring_example/Controller/UserController/UserController.java
new file mode 100644
index 0000000..8fcd251
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Controller/UserController/UserController.java
@@ -0,0 +1,73 @@
+package icu.sunway.ai_spring_example.Controller.UserController;
+
+import icu.sunway.ai_spring_example.Entity.User;
+import icu.sunway.ai_spring_example.Service.IUserService;
+import icu.sunway.ai_spring_example.Utils.ResponseUtils;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import org.springframework.web.bind.annotation.*;
+
+import jakarta.annotation.Resource;
+
+@RestController
+@RequestMapping("/user")
+public class UserController {
+
+    @Resource
+    private IUserService userService;
+
+    @GetMapping("/{id}")
+    public Object getUserById(@PathVariable Long id) {
+        User user = userService.getById(id);
+        return ResponseUtils.success(user);
+    }
+
+    @GetMapping
+    public Object getAllUsers(
+            @RequestParam(defaultValue = "1") Integer page,
+            @RequestParam(defaultValue = "10") Integer limit) {
+
+        Page<User> userPage = new Page<>(page, limit);
+        Page<User> resultPage = userService.page(userPage);
+        return ResponseUtils.success(resultPage);
+    }
+
+    @PostMapping
+    public Object createUser(@RequestBody User user) {
+        boolean result = userService.save(user);
+        if (result) {
+            return ResponseUtils.success(user);
+        } else {
+            return ResponseUtils.fail("Failed to create user");
+        }
+    }
+
+    @PutMapping("/{id}")
+    public Object updateUser(@PathVariable Long id, @RequestBody User user) {
+        user.setId(id);
+        boolean result = userService.updateById(user);
+        if (result) {
+            return ResponseUtils.success(user);
+        } else {
+            return ResponseUtils.fail("Failed to update user");
+        }
+    }
+
+    @DeleteMapping("/{id}")
+    public Object deleteUser(@PathVariable Long id) {
+        boolean result = userService.removeById(id);
+        if (result) {
+            return ResponseUtils.success("User deleted successfully");
+        } else {
+            return ResponseUtils.fail("Failed to delete user");
+        }
+    }
+
+    @GetMapping("/username/{username}")
+    public Object getUserByUsername(@PathVariable String username) {
+        QueryWrapper<User> wrapper = new QueryWrapper<>();
+        wrapper.eq("username", username);
+        User user = userService.getOne(wrapper);
+        return ResponseUtils.success(user);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Controller/UserRoleController/UserRoleController.java b/src/main/java/icu/sunway/ai_spring_example/Controller/UserRoleController/UserRoleController.java
new file mode 100644
index 0000000..21546a0
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Controller/UserRoleController/UserRoleController.java
@@ -0,0 +1,84 @@
+package icu.sunway.ai_spring_example.Controller.UserRoleController;
+
+import icu.sunway.ai_spring_example.Entity.UserRole;
+import icu.sunway.ai_spring_example.Service.IUserRoleService;
+import icu.sunway.ai_spring_example.Utils.ResponseUtils;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+
+import java.util.List;
+
+import org.springframework.web.bind.annotation.*;
+
+import jakarta.annotation.Resource;
+
+@RestController
+@RequestMapping("/user-role")
+public class UserRoleController {
+
+    @Resource
+    private IUserRoleService userRoleService;
+
+    @GetMapping("/{id}")
+    public Object getUserRoleById(@PathVariable Long id) {
+        UserRole userRole = userRoleService.getById(id);
+        return ResponseUtils.success(userRole);
+    }
+
+    @GetMapping
+    public Object getAllUserRoles(
+            @RequestParam(defaultValue = "1") Integer page,
+            @RequestParam(defaultValue = "10") Integer limit) {
+
+        Page<UserRole> userRolePage = new Page<>(page, limit);
+        Page<UserRole> resultPage = userRoleService.page(userRolePage);
+        return ResponseUtils.success(resultPage);
+    }
+
+    @PostMapping
+    public Object createUserRole(@RequestBody UserRole userRole) {
+        boolean result = userRoleService.save(userRole);
+        if (result) {
+            return ResponseUtils.success(userRole);
+        } else {
+            return ResponseUtils.fail("Failed to create user role relationship");
+        }
+    }
+
+    @PutMapping("/{id}")
+    public Object updateUserRole(@PathVariable Long id, @RequestBody UserRole userRole) {
+        userRole.setId(id);
+        boolean result = userRoleService.updateById(userRole);
+        if (result) {
+            return ResponseUtils.success(userRole);
+        } else {
+            return ResponseUtils.fail("Failed to update user role relationship");
+        }
+    }
+
+    @DeleteMapping("/{id}")
+    public Object deleteUserRole(@PathVariable Long id) {
+        boolean result = userRoleService.removeById(id);
+        if (result) {
+            return ResponseUtils.success("User role relationship deleted successfully");
+        } else {
+            return ResponseUtils.fail("Failed to delete user role relationship");
+        }
+    }
+
+    @GetMapping("/user/{userId}")
+    public Object getUserRolesByUserId(@PathVariable Long userId) {
+        QueryWrapper<UserRole> wrapper = new QueryWrapper<>();
+        wrapper.eq("user_id", userId);
+        List<UserRole> userRoles = userRoleService.list(wrapper);
+        return ResponseUtils.success(userRoles);
+    }
+
+    @GetMapping("/role/{roleId}")
+    public Object getUserRolesByRoleId(@PathVariable Long roleId) {
+        QueryWrapper<UserRole> wrapper = new QueryWrapper<>();
+        wrapper.eq("role_id", roleId);
+        List<UserRole> userRoles = userRoleService.list(wrapper);
+        return ResponseUtils.success(userRoles);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Entity/Permission.java b/src/main/java/icu/sunway/ai_spring_example/Entity/Permission.java
new file mode 100644
index 0000000..e4822fe
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Entity/Permission.java
@@ -0,0 +1,29 @@
+package icu.sunway.ai_spring_example.Entity;
+
+import java.time.LocalDateTime;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@TableName("permission")
+public class Permission {
+    @TableId(type = IdType.AUTO)
+    private Long id;
+    private String name;
+    private String code;
+    private String description;
+    private Long parentId;
+    private Integer type; // 1: menu, 2: button, 3: api
+    private String path;
+    private Integer sort;
+    private LocalDateTime createTime;
+    private LocalDateTime updateTime;
+}
diff --git a/src/main/java/icu/sunway/ai_spring_example/Entity/Role.java b/src/main/java/icu/sunway/ai_spring_example/Entity/Role.java
new file mode 100644
index 0000000..7832776
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Entity/Role.java
@@ -0,0 +1,26 @@
+package icu.sunway.ai_spring_example.Entity;
+
+import java.time.LocalDateTime;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@TableName("role")
+public class Role {
+    @TableId(type = IdType.AUTO)
+    private Long id;
+    private String name;
+    private String code;
+    private String description;
+    private Integer status; // 0: disabled, 1: enabled
+    private LocalDateTime createTime;
+    private LocalDateTime updateTime;
+}
diff --git a/src/main/java/icu/sunway/ai_spring_example/Entity/RolePermission.java b/src/main/java/icu/sunway/ai_spring_example/Entity/RolePermission.java
new file mode 100644
index 0000000..cf72801
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Entity/RolePermission.java
@@ -0,0 +1,20 @@
+package icu.sunway.ai_spring_example.Entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@TableName("role_permission")
+public class RolePermission {
+    @TableId(type = IdType.AUTO)
+    private Long id;
+    private Long roleId;
+    private Long permissionId;
+}
diff --git a/src/main/java/icu/sunway/ai_spring_example/Entity/User.java b/src/main/java/icu/sunway/ai_spring_example/Entity/User.java
new file mode 100644
index 0000000..021959d
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Entity/User.java
@@ -0,0 +1,29 @@
+package icu.sunway.ai_spring_example.Entity;
+
+import java.time.LocalDateTime;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@TableName("user")
+public class User {
+    @TableId(type = IdType.AUTO)
+    private Long id;
+    private String username;
+    private String password;
+    private String email;
+    private String phone;
+    private String avatar;
+    private Integer status; // 0: disabled, 1: enabled
+    private LocalDateTime createTime;
+    private LocalDateTime updateTime;
+    private LocalDateTime lastLoginTime;
+}
diff --git a/src/main/java/icu/sunway/ai_spring_example/Entity/UserRole.java b/src/main/java/icu/sunway/ai_spring_example/Entity/UserRole.java
new file mode 100644
index 0000000..c4e1a0e
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Entity/UserRole.java
@@ -0,0 +1,20 @@
+package icu.sunway.ai_spring_example.Entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@TableName("user_role")
+public class UserRole {
+    @TableId(type = IdType.AUTO)
+    private Long id;
+    private Long userId;
+    private Long roleId;
+}
diff --git a/src/main/java/icu/sunway/ai_spring_example/Entity/example.sql b/src/main/java/icu/sunway/ai_spring_example/Entity/example.sql
new file mode 100644
index 0000000..f3035c8
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Entity/example.sql
@@ -0,0 +1,276 @@
+-- Example Data for User System
+
+-- Roles
+INSERT INTO
+    `role` (
+        `name`,
+        `code`,
+        `description`,
+        `status`
+    )
+VALUES (
+        'Super Admin',
+        'SUPER_ADMIN',
+        'Full system access',
+        1
+    ),
+    (
+        'Admin',
+        'ADMIN',
+        'Administrative access',
+        1
+    ),
+    (
+        'User',
+        'USER',
+        'Regular user access',
+        1
+    ),
+    (
+        'Guest',
+        'GUEST',
+        'Limited guest access',
+        1
+    );
+
+-- Permissions
+INSERT INTO
+    `permission` (
+        `name`,
+        `code`,
+        `description`,
+        `parent_id`,
+        `type`,
+        `path`,
+        `sort`
+    )
+VALUES
+    -- Menu permissions
+    (
+        'Dashboard',
+        'dashboard',
+        'Dashboard menu',
+        0,
+        1,
+        '/dashboard',
+        1
+    ),
+    (
+        'User Management',
+        'user:manage',
+        'User management menu',
+        0,
+        1,
+        '/user',
+        2
+    ),
+    (
+        'Role Management',
+        'role:manage',
+        'Role management menu',
+        0,
+        1,
+        '/role',
+        3
+    ),
+    (
+        'System Settings',
+        'system:settings',
+        'System settings menu',
+        0,
+        1,
+        '/settings',
+        4
+    ),
+    -- User management buttons/actions
+    (
+        'View Users',
+        'user:view',
+        'View user list',
+        2,
+        2,
+        NULL,
+        1
+    ),
+    (
+        'Create User',
+        'user:create',
+        'Create new user',
+        2,
+        2,
+        NULL,
+        2
+    ),
+    (
+        'Edit User',
+        'user:edit',
+        'Edit user info',
+        2,
+        2,
+        NULL,
+        3
+    ),
+    (
+        'Delete User',
+        'user:delete',
+        'Delete user',
+        2,
+        2,
+        NULL,
+        4
+    ),
+    -- Role management buttons/actions
+    (
+        'View Roles',
+        'role:view',
+        'View role list',
+        3,
+        2,
+        NULL,
+        1
+    ),
+    (
+        'Create Role',
+        'role:create',
+        'Create new role',
+        3,
+        2,
+        NULL,
+        2
+    ),
+    (
+        'Edit Role',
+        'role:edit',
+        'Edit role info',
+        3,
+        2,
+        NULL,
+        3
+    ),
+    (
+        'Delete Role',
+        'role:delete',
+        'Delete role',
+        3,
+        2,
+        NULL,
+        4
+    ),
+    -- API permissions
+    (
+        'User API',
+        'api:user',
+        'User API access',
+        0,
+        3,
+        '/api/user/**',
+        1
+    ),
+    (
+        'Role API',
+        'api:role',
+        'Role API access',
+        0,
+        3,
+        '/api/role/**',
+        2
+    );
+
+-- Users (passwords are bcrypt hashed for 'password123')
+INSERT INTO
+    `user` (
+        `username`,
+        `password`,
+        `email`,
+        `phone`,
+        `avatar`,
+        `status`
+    )
+VALUES (
+        'admin',
+        '$2a$10$N.zmdr9k7uOCQb376NoUnuTJ8iAt6Z5EHsM8lE9lBOsl7iKTVKIUi',
+        'admin@example.com',
+        '13800000001',
+        NULL,
+        1
+    ),
+    (
+        'john',
+        '$2a$10$N.zmdr9k7uOCQb376NoUnuTJ8iAt6Z5EHsM8lE9lBOsl7iKTVKIUi',
+        'john@example.com',
+        '13800000002',
+        NULL,
+        1
+    ),
+    (
+        'jane',
+        '$2a$10$N.zmdr9k7uOCQb376NoUnuTJ8iAt6Z5EHsM8lE9lBOsl7iKTVKIUi',
+        'jane@example.com',
+        '13800000003',
+        NULL,
+        1
+    ),
+    (
+        'guest',
+        '$2a$10$N.zmdr9k7uOCQb376NoUnuTJ8iAt6Z5EHsM8lE9lBOsl7iKTVKIUi',
+        'guest@example.com',
+        '13800000004',
+        NULL,
+        1
+    );
+
+-- User-Role assignments
+INSERT INTO
+    `user_role` (`user_id`, `role_id`)
+VALUES (1, 1), -- admin -> SUPER_ADMIN
+    (2, 2), -- john -> ADMIN
+    (3, 3), -- jane -> USER
+    (4, 4);
+-- guest -> GUEST
+
+-- Role-Permission assignments
+-- SUPER_ADMIN gets all permissions
+INSERT INTO
+    `role_permission` (`role_id`, `permission_id`)
+VALUES (1, 1),
+    (1, 2),
+    (1, 3),
+    (1, 4),
+    (1, 5),
+    (1, 6),
+    (1, 7),
+    (1, 8),
+    (1, 9),
+    (1, 10),
+    (1, 11),
+    (1, 12),
+    (1, 13),
+    (1, 14);
+
+-- ADMIN gets user and role management
+INSERT INTO
+    `role_permission` (`role_id`, `permission_id`)
+VALUES (2, 1),
+    (2, 2),
+    (2, 3),
+    (2, 5),
+    (2, 6),
+    (2, 7),
+    (2, 9),
+    (2, 10),
+    (2, 11),
+    (2, 13),
+    (2, 14);
+
+-- USER gets dashboard and view permissions
+INSERT INTO
+    `role_permission` (`role_id`, `permission_id`)
+VALUES (3, 1),
+    (3, 5),
+    (3, 9),
+    (3, 13);
+
+-- GUEST gets only dashboard
+INSERT INTO
+    `role_permission` (`role_id`, `permission_id`)
+VALUES (4, 1);
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Entity/main.sql b/src/main/java/icu/sunway/ai_spring_example/Entity/main.sql
new file mode 100644
index 0000000..5471bb2
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Entity/main.sql
@@ -0,0 +1,70 @@
+-- User System Tables
+
+-- User table
+CREATE TABLE `user` (
+    `id` BIGINT NOT NULL AUTO_INCREMENT,
+    `username` VARCHAR(50) NOT NULL,
+    `password` VARCHAR(255) NOT NULL,
+    `email` VARCHAR(100),
+    `phone` VARCHAR(20),
+    `avatar` VARCHAR(255),
+    `status` INT DEFAULT 1 COMMENT '0: disabled, 1: enabled',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    `update_time` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    `last_login_time` DATETIME,
+    PRIMARY KEY (`id`),
+    UNIQUE KEY `uk_username` (`username`),
+    UNIQUE KEY `uk_email` (`email`),
+    UNIQUE KEY `uk_phone` (`phone`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- Role table
+CREATE TABLE `role` (
+    `id` BIGINT NOT NULL AUTO_INCREMENT,
+    `name` VARCHAR(50) NOT NULL,
+    `code` VARCHAR(50) NOT NULL,
+    `description` VARCHAR(255),
+    `status` INT DEFAULT 1 COMMENT '0: disabled, 1: enabled',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    `update_time` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    PRIMARY KEY (`id`),
+    UNIQUE KEY `uk_code` (`code`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- Permission table
+CREATE TABLE `permission` (
+    `id` BIGINT NOT NULL AUTO_INCREMENT,
+    `name` VARCHAR(50) NOT NULL,
+    `code` VARCHAR(100) NOT NULL,
+    `description` VARCHAR(255),
+    `parent_id` BIGINT DEFAULT 0,
+    `type` INT NOT NULL COMMENT '1: menu, 2: button, 3: api',
+    `path` VARCHAR(255),
+    `sort` INT DEFAULT 0,
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    `update_time` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    PRIMARY KEY (`id`),
+    UNIQUE KEY `uk_code` (`code`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- User-Role junction table
+CREATE TABLE `user_role` (
+    `id` BIGINT NOT NULL AUTO_INCREMENT,
+    `user_id` BIGINT NOT NULL,
+    `role_id` BIGINT NOT NULL,
+    PRIMARY KEY (`id`),
+    UNIQUE KEY `uk_user_role` (`user_id`, `role_id`),
+    FOREIGN KEY (`user_id`) REFERENCES `user`(`id`) ON DELETE CASCADE,
+    FOREIGN KEY (`role_id`) REFERENCES `role`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- Role-Permission junction table
+CREATE TABLE `role_permission` (
+    `id` BIGINT NOT NULL AUTO_INCREMENT,
+    `role_id` BIGINT NOT NULL,
+    `permission_id` BIGINT NOT NULL,
+    PRIMARY KEY (`id`),
+    UNIQUE KEY `uk_role_permission` (`role_id`, `permission_id`),
+    FOREIGN KEY (`role_id`) REFERENCES `role`(`id`) ON DELETE CASCADE,
+    FOREIGN KEY (`permission_id`) REFERENCES `permission`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
diff --git a/src/main/java/icu/sunway/ai_spring_example/Mapper/PermissionMapper.java b/src/main/java/icu/sunway/ai_spring_example/Mapper/PermissionMapper.java
new file mode 100644
index 0000000..fb18b6e
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Mapper/PermissionMapper.java
@@ -0,0 +1,10 @@
+package icu.sunway.ai_spring_example.Mapper;
+
+import org.apache.ibatis.annotations.Mapper;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+
+import icu.sunway.ai_spring_example.Entity.Permission;
+
+@Mapper
+public interface PermissionMapper extends BaseMapper<Permission> {
+}
diff --git a/src/main/java/icu/sunway/ai_spring_example/Mapper/RoleMapper.java b/src/main/java/icu/sunway/ai_spring_example/Mapper/RoleMapper.java
new file mode 100644
index 0000000..820d5c8
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Mapper/RoleMapper.java
@@ -0,0 +1,10 @@
+package icu.sunway.ai_spring_example.Mapper;
+
+import org.apache.ibatis.annotations.Mapper;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+
+import icu.sunway.ai_spring_example.Entity.Role;
+
+@Mapper
+public interface RoleMapper extends BaseMapper<Role> {
+}
diff --git a/src/main/java/icu/sunway/ai_spring_example/Mapper/RolePermissionMapper.java b/src/main/java/icu/sunway/ai_spring_example/Mapper/RolePermissionMapper.java
new file mode 100644
index 0000000..c5a4b41
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Mapper/RolePermissionMapper.java
@@ -0,0 +1,10 @@
+package icu.sunway.ai_spring_example.Mapper;
+
+import org.apache.ibatis.annotations.Mapper;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+
+import icu.sunway.ai_spring_example.Entity.RolePermission;
+
+@Mapper
+public interface RolePermissionMapper extends BaseMapper<RolePermission> {
+}
diff --git a/src/main/java/icu/sunway/ai_spring_example/Mapper/UserMapper.java b/src/main/java/icu/sunway/ai_spring_example/Mapper/UserMapper.java
new file mode 100644
index 0000000..1276477
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Mapper/UserMapper.java
@@ -0,0 +1,10 @@
+package icu.sunway.ai_spring_example.Mapper;
+
+import org.apache.ibatis.annotations.Mapper;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+
+import icu.sunway.ai_spring_example.Entity.User;
+
+@Mapper
+public interface UserMapper extends BaseMapper<User> {
+}
diff --git a/src/main/java/icu/sunway/ai_spring_example/Mapper/UserRoleMapper.java b/src/main/java/icu/sunway/ai_spring_example/Mapper/UserRoleMapper.java
new file mode 100644
index 0000000..fcbd13e
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Mapper/UserRoleMapper.java
@@ -0,0 +1,10 @@
+package icu.sunway.ai_spring_example.Mapper;
+
+import org.apache.ibatis.annotations.Mapper;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+
+import icu.sunway.ai_spring_example.Entity.UserRole;
+
+@Mapper
+public interface UserRoleMapper extends BaseMapper<UserRole> {
+}
diff --git a/src/main/java/icu/sunway/ai_spring_example/Service/IPermissionService.java b/src/main/java/icu/sunway/ai_spring_example/Service/IPermissionService.java
new file mode 100644
index 0000000..06d21fc
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Service/IPermissionService.java
@@ -0,0 +1,7 @@
+package icu.sunway.ai_spring_example.Service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import icu.sunway.ai_spring_example.Entity.Permission;
+
+public interface IPermissionService extends IService<Permission> {
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Service/IRolePermissionService.java b/src/main/java/icu/sunway/ai_spring_example/Service/IRolePermissionService.java
new file mode 100644
index 0000000..ae9ff7e
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Service/IRolePermissionService.java
@@ -0,0 +1,7 @@
+package icu.sunway.ai_spring_example.Service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import icu.sunway.ai_spring_example.Entity.RolePermission;
+
+public interface IRolePermissionService extends IService<RolePermission> {
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Service/IRoleService.java b/src/main/java/icu/sunway/ai_spring_example/Service/IRoleService.java
new file mode 100644
index 0000000..b70cf96
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Service/IRoleService.java
@@ -0,0 +1,7 @@
+package icu.sunway.ai_spring_example.Service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import icu.sunway.ai_spring_example.Entity.Role;
+
+public interface IRoleService extends IService<Role> {
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Service/IUserRoleService.java b/src/main/java/icu/sunway/ai_spring_example/Service/IUserRoleService.java
new file mode 100644
index 0000000..c7c293d
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Service/IUserRoleService.java
@@ -0,0 +1,7 @@
+package icu.sunway.ai_spring_example.Service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import icu.sunway.ai_spring_example.Entity.UserRole;
+
+public interface IUserRoleService extends IService<UserRole> {
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Service/IUserService.java b/src/main/java/icu/sunway/ai_spring_example/Service/IUserService.java
new file mode 100644
index 0000000..009a0dd
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Service/IUserService.java
@@ -0,0 +1,7 @@
+package icu.sunway.ai_spring_example.Service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import icu.sunway.ai_spring_example.Entity.User;
+
+public interface IUserService extends IService<User> {
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Service/Implements/PermissionServiceImpl.java b/src/main/java/icu/sunway/ai_spring_example/Service/Implements/PermissionServiceImpl.java
new file mode 100644
index 0000000..749522c
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Service/Implements/PermissionServiceImpl.java
@@ -0,0 +1,16 @@
+package icu.sunway.ai_spring_example.Service.Implements;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import icu.sunway.ai_spring_example.Entity.Permission;
+import icu.sunway.ai_spring_example.Mapper.PermissionMapper;
+import icu.sunway.ai_spring_example.Service.IPermissionService;
+import org.springframework.stereotype.Service;
+
+import jakarta.annotation.Resource;
+
+@Service
+public class PermissionServiceImpl extends ServiceImpl<PermissionMapper, Permission> implements IPermissionService {
+
+    @Resource
+    private PermissionMapper permissionMapper;
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Service/Implements/RolePermissionServiceImpl.java b/src/main/java/icu/sunway/ai_spring_example/Service/Implements/RolePermissionServiceImpl.java
new file mode 100644
index 0000000..f1904f6
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Service/Implements/RolePermissionServiceImpl.java
@@ -0,0 +1,17 @@
+package icu.sunway.ai_spring_example.Service.Implements;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import icu.sunway.ai_spring_example.Entity.RolePermission;
+import icu.sunway.ai_spring_example.Mapper.RolePermissionMapper;
+import icu.sunway.ai_spring_example.Service.IRolePermissionService;
+import org.springframework.stereotype.Service;
+
+import jakarta.annotation.Resource;
+
+@Service
+public class RolePermissionServiceImpl extends ServiceImpl<RolePermissionMapper, RolePermission>
+        implements IRolePermissionService {
+
+    @Resource
+    private RolePermissionMapper rolePermissionMapper;
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Service/Implements/RoleServiceImpl.java b/src/main/java/icu/sunway/ai_spring_example/Service/Implements/RoleServiceImpl.java
new file mode 100644
index 0000000..eed99db
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Service/Implements/RoleServiceImpl.java
@@ -0,0 +1,16 @@
+package icu.sunway.ai_spring_example.Service.Implements;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import icu.sunway.ai_spring_example.Entity.Role;
+import icu.sunway.ai_spring_example.Mapper.RoleMapper;
+import icu.sunway.ai_spring_example.Service.IRoleService;
+import org.springframework.stereotype.Service;
+
+import jakarta.annotation.Resource;
+
+@Service
+public class RoleServiceImpl extends ServiceImpl<RoleMapper, Role> implements IRoleService {
+
+    @Resource
+    private RoleMapper roleMapper;
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Service/Implements/UserRoleServiceImpl.java b/src/main/java/icu/sunway/ai_spring_example/Service/Implements/UserRoleServiceImpl.java
new file mode 100644
index 0000000..fdc6e34
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Service/Implements/UserRoleServiceImpl.java
@@ -0,0 +1,16 @@
+package icu.sunway.ai_spring_example.Service.Implements;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import icu.sunway.ai_spring_example.Entity.UserRole;
+import icu.sunway.ai_spring_example.Mapper.UserRoleMapper;
+import icu.sunway.ai_spring_example.Service.IUserRoleService;
+import org.springframework.stereotype.Service;
+
+import jakarta.annotation.Resource;
+
+@Service
+public class UserRoleServiceImpl extends ServiceImpl<UserRoleMapper, UserRole> implements IUserRoleService {
+
+    @Resource
+    private UserRoleMapper userRoleMapper;
+}
\ No newline at end of file
diff --git a/src/main/java/icu/sunway/ai_spring_example/Service/Implements/UserServiceImpl.java b/src/main/java/icu/sunway/ai_spring_example/Service/Implements/UserServiceImpl.java
new file mode 100644
index 0000000..35ab09f
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Service/Implements/UserServiceImpl.java
@@ -0,0 +1,16 @@
+package icu.sunway.ai_spring_example.Service.Implements;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import icu.sunway.ai_spring_example.Entity.User;
+import icu.sunway.ai_spring_example.Mapper.UserMapper;
+import icu.sunway.ai_spring_example.Service.IUserService;
+import org.springframework.stereotype.Service;
+
+import jakarta.annotation.Resource;
+
+@Service
+public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {
+
+    @Resource
+    private UserMapper userMapper;
+}
\ No newline at end of file