告诉前端这次只改了 GET /api/user/profile 的响应，新增每日免费额度信息，原有字段不变。
接口：GET https://api.cozsweet.com/api/user/profile
新增字段：
{
  "dailyFreeChatLimit": 10,
  "dailyFreeChatUsed": 0,
  "dailyFreeChatRemaining": 10,
  "dailyFreePrivateLimit": 0,
  "dailyFreePrivateUsed": 0,
  "dailyFreePrivateRemaining": 0,
  "dailyQuotas": {
    "chat": {
      "limit": 10,
      "used": 0,
      "remaining": 10
    },
    "privateMessage": {
      "limit": 0,
      "used": 0,
      "remaining": 0
    }
  }
}
含义：
dailyFreeChatLimit：今天免费聊天总次数
dailyFreeChatUsed：今天已用免费聊天次数
dailyFreeChatRemaining：今天剩余免费聊天次数
dailyFreePrivateLimit：今天免费私密消息总次数
dailyFreePrivateUsed：今天已用免费私密消息次数
dailyFreePrivateRemaining：今天剩余免费私密消息次数
dailyQuotas：同样数据的结构化版本，前端想用对象也可以直接用它
当前额度规则：
游客/未注册：聊天 10，私密 0
注册用户：聊天 30，私密 2
注意：
聊天优先消耗 dailyFreeChatRemaining
私密消息优先消耗 dailyFreePrivateRemaining
聊天剩余为 0 时，前端应阻止继续聊天或展示后端返回的额度用完提示
私密剩余为 0 时，前端不要展示私密内容，按锁定私密消息处理。
16:19
profile完整字段发给前端 
16:20
发给前端这版：
GET https://api.cozsweet.com/api/user/profile
Authorization: Bearer <token>
完整响应结构：
interface ProfileResponse {
  code: number;
  message: string;
  success: boolean;
  data: UserProfile;
}

interface UserProfile {
  id: string;
  username: string;
  email: string | null;
  platform: string;

  intimacy: number;
  dolBalance: number;
  creditBalance: number;

  isTestAccount: boolean;

  personalityTraits: Record<string, number> | null;
  preferredLanguage: string | null;

  createdAt: string | null;
  lastMessageAt: string | null;

  country: string | null;
  countryCode: string | null;

  dailyFreeChatLimit: number;
  dailyFreeChatUsed: number;
  dailyFreeChatRemaining: number;

  dailyFreePrivateLimit: number;
  dailyFreePrivateUsed: number;
  dailyFreePrivateRemaining: number;

  dailyQuotas: {
    chat: {
      limit: number;
      used: number;
      remaining: number;
    };
    privateMessage: {
      limit: number;
      used: number;
      remaining: number;
    };
  };
}
示例：
{
  "code": 200,
  "message": "success",
  "success": true,
  "data": {
    "id": "user-id",
    "username": "guest_codex",
    "email": "device_xxx@guest.local",
    "platform": "web",
    "intimacy": 0,
    "dolBalance": 0,
    "creditBalance": 0,
    "isTestAccount": false,
    "personalityTraits": {
      "caring": 0.5,
      "playful": 0.5,
      "serious": 0.5,
      "cheerful": 0.5,
      "romantic": 0.5
    },
    "preferredLanguage": "ja",
    "createdAt": "2026-07-03T16:12:01.591264+08:00",
    "lastMessageAt": null,
    "country": "Japan",
    "countryCode": "JP",
    "dailyFreeChatLimit": 10,
    "dailyFreeChatUsed": 0,
    "dailyFreeChatRemaining": 10,
    "dailyFreePrivateLimit": 0,
    "dailyFreePrivateUsed": 0,
    "dailyFreePrivateRemaining": 0,
    "dailyQuotas": {
      "chat": {
        "limit": 10,
        "used": 0,
        "remaining": 10
      },
      "privateMessage": {
        "limit": 0,
        "used": 0,
        "remaining": 0
      }
    }
  }
}
额度规则：
游客：dailyFreeChatLimit = 10，dailyFreePrivateLimit = 0
注册用户：dailyFreeChatLimit = 30，dailyFreePrivateLimit = 2