智教助手平台：完整初始化

- 前端：Vue3 + TS + Element Plus，24 个页面路由（课件/组题/教案/动画/思维导图/作文批改/命题/课堂/资源/社区等）
- 后端：FastAPI + SQLAlchemy + SQLite，17 个路由模块，AI 服务层含降级模板
- AI：glm-5.x 推理模型已禁用思维链，确保输出真实内容
- 修复：ai_service 两处请求体注入 enable_thinking/thinking disabled
- 测试账号：13900999999 / test1234

backend/models/__init__.py

@@ -0,0 +1,28 @@
+from .user import User
+from .courseware import Courseware, CoursewareShare
+from .animation import Animation
+from .exercise import Exercise, ExerciseAttempt
+from .lesson_plan import LessonPlan
+from .essay import EssayGrade
+from .exam import Exam
+from .resource import Resource, ResourceFavorite
+from .material import Material
+from .community import Post, Comment, PostFavorite
+from .classroom import ClassroomActivity
+from .credit import CreditAccount, CreditTransaction
+from .audit import AuditLog
+from .mindmap import MindMap
+from .reset_code import ResetCode
+from .notification import Notification
+from .chat import ChatConversation, ChatMessage
+
+__all__ = [
+    "User", "Courseware", "CoursewareShare", "Animation", "Exercise", "ExerciseAttempt",
+    "LessonPlan", "EssayGrade", "Exam", "Resource", "ResourceFavorite", "Material", "Post", "Comment", "PostFavorite", "ClassroomActivity",
+    "CreditAccount", "CreditTransaction",
+    "AuditLog",
+    "MindMap",
+    "ResetCode",
+    "Notification",
+    "ChatConversation", "ChatMessage",
+]