refactor: restructure API authentication system and remove legacy files

- Updated API routes to use a unified versioning scheme under `/api/v1/auth`.
- Implemented new authentication controller for login, registration, and token management.
- Removed legacy user and index controllers, along with associated models and validation files.
- Updated documentation to reflect new API endpoints and usage.
- Cleaned up unused service and middleware files to streamline the application structure.

app/api/model/User.php

@@ -1,48 +0,0 @@
-<?php
-declare (strict_types = 1);
-
-namespace app\api\model;
-
-use think\Model;
-
-/**
- * 用户模型
- */
-class User extends Model
-{
-    // 表名
-    protected $name = 'user';
-
-    // 自动写入时间戳
-    protected $autoWriteTimestamp = true;
-
-    // 类型转换
-    protected $type = [
-        'id' => 'integer',
-        'status' => 'integer',
-    ];
-
-    // 隐藏字段
-    protected $hidden = ['password', 'delete_time'];
-
-    /**
-     * 密码加密
-     * @param string $value
-     * @return string
-     */
-    public function setPasswordAttr(string $value): string
-    {
-        return password_hash($value, PASSWORD_DEFAULT);
-    }
-
-    /**
-     * 验证密码
-     * @param string $password 明文密码
-     * @param string $hash 加密后的密码
-     * @return bool
-     */
-    public static function verifyPassword(string $password, string $hash): bool
-    {
-        return password_verify($password, $hash);
-    }
-}