finalize medical consultation agent backend

backend/app/core/context.py

@@ -3,17 +3,23 @@ from dataclasses import dataclass
 
 @dataclass(frozen=True)
 class UserContext:
-    """用户上下文：承载宿主系统传入的 user_id 和入口元数据。"""
+    """用户上下文：承载 Django 用户中心认证后的用户 ID 和入口元数据。"""
 
     user_id: str
     tenant_id: str | None = None
     role: str | None = None
     class_id: str | None = None
+    institution_id: int | None = None
+    department_id: int | None = None
     entry_scene: str | None = None
     request_id: str | None = None
     ip_address: str | None = None
     user_agent: str | None = None
     username: str | None = None
     display_name: str | None = None
+    phone: str | None = None
+    major: str | None = None
+    training_stage: str | None = None
+    learning_target: str | None = None
     auth_source: str = "django_user_center"
     profile: dict | None = None