modify: auth插件拆分，将token签发部分交给网关

auth/models/pydantic.py

@@ -20,18 +20,6 @@ class ChangePasswordPostResponse(BaseModel):
     message: str = Field(...)
     timestamp: Optional[float] = Field(default=None)
 
-class LoginPostRequest(BaseModel):
-    """登录 — 请求体"""
-    username: str = Field(...)
-    password: str = Field(...)
-
-class LoginPostResponse(BaseModel):
-    """登录 — 响应体"""
-    result: str = Field(...)
-    token: str = Field(...)
-    message: str = Field(...)
-    timestamp: Optional[float] = Field(default=None)
-
 class MeGetRequest(BaseModel):
     """获取当前用户信息 — 请求体"""
     user_id: str = Field(...)
@@ -83,4 +71,5 @@ class UpdateProfilePostResponse(BaseModel):
 
 
 # 所有响应模型的联合类型
-AuthResponse = LoginPostResponse | ChangePasswordPostResponse | MeGetResponse | UpdateProfilePostResponse | RegisterPostResponse
+# （登录响应 LoginPostResponse 已随内置登录迁移至 chongming_auth 包）
+AuthResponse = ChangePasswordPostResponse | MeGetResponse | UpdateProfilePostResponse | RegisterPostResponse