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/schemas/ai.py

@@ -0,0 +1,38 @@
+from pydantic import BaseModel, Field
+from typing import Any
+
+
+class AIRequest(BaseModel):
+    prompt: str = Field(..., min_length=1, description="AI请求内容")
+    context: dict[str, Any] = Field(default_factory=dict, description="上下文信息")
+    stream: bool = Field(default=False, description="是否流式返回")
+
+
+class EssayGradeRequest(BaseModel):
+    essay_text: str = Field(..., min_length=10, description="作文文本")
+    grade_level: str = Field(default="初中", description="年级段")
+    essay_type: str = Field(default="记叙文", description="作文类型")
+    total_score: int = Field(default=50, description="满分")
+
+
+class ExamGenerateRequest(BaseModel):
+    subject: str = Field(..., min_length=1)
+    grade: str = ""
+    knowledge_points: list[str] = []
+    difficulty: str = Field(default="medium", pattern=r"^(easy|medium|hard)$")
+    question_types: list[str] = Field(default=["choice"])
+    count: int = Field(default=10, ge=1, le=50)
+    total_score: int = Field(default=100)
+
+
+class HtmlExportRequest(BaseModel):
+    title: str = Field(default="教学内容", max_length=200)
+    html: str = Field(..., min_length=1)
+
+
+class ExamExportRequest(BaseModel):
+    title: str = Field(default="试卷", max_length=200)
+    subject: str = ""
+    grade: str = ""
+    questions: list[dict[str, Any]] = []
+    answers: list[Any] = []