[add] i18n support zh,en

api/app/schemas/user_schema.py

@@ -58,6 +58,16 @@ class VerifyPasswordRequest(BaseModel):
     password: str = Field(..., description="密码")
 
 
+class LanguagePreferenceRequest(BaseModel):
+    """语言偏好设置请求"""
+    language: str = Field(..., min_length=2, max_length=10, description="语言代码，如 'zh', 'en'")
+
+
+class LanguagePreferenceResponse(BaseModel):
+    """语言偏好响应"""
+    language: str = Field(..., description="当前语言偏好")
+
+
 class ChangePasswordResponse(BaseModel):
     """修改密码响应"""
     message: str
@@ -74,6 +84,7 @@ class User(UserBase):
     current_workspace_id: Optional[uuid.UUID] = None
     current_workspace_name: Optional[str] = None
     role: Optional[WorkspaceRole] = None
+    preferred_language: Optional[str] = "zh"  # 用户语言偏好
 
     # 将 datetime 转换为毫秒时间戳
     @validator("created_at", pre=True)