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/alembic/versions/a1b2c3d4e5f6_add_audit_logs_table.py

@@ -0,0 +1,44 @@
+"""add audit logs table
+
+Revision ID: a1b2c3d4e5f6
+Revises: 97e0aa47c003
+Create Date: 2026-07-21 12:00:00.000000
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision: str = 'a1b2c3d4e5f6'
+down_revision: Union[str, None] = '97e0aa47c003'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        'audit_logs',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('user_id', sa.Integer(), nullable=True),
+        sa.Column('username', sa.String(length=100), nullable=False, server_default=''),
+        sa.Column('action', sa.String(length=64), nullable=False),
+        sa.Column('target_type', sa.String(length=32), nullable=False, server_default=''),
+        sa.Column('target_id', sa.String(length=64), nullable=False, server_default=''),
+        sa.Column('detail', sa.Text(), nullable=False, server_default=''),
+        sa.Column('ip', sa.String(length=64), nullable=False, server_default=''),
+        sa.Column('user_agent', sa.String(length=255), nullable=False, server_default=''),
+        sa.Column('status', sa.String(length=16), nullable=False, server_default='success'),
+        sa.Column('created_at', sa.DateTime(), server_default=sa.func.now(), nullable=True),
+        sa.PrimaryKeyConstraint('id'),
+    )
+    op.create_index('ix_audit_logs_id', 'audit_logs', ['id'])
+    op.create_index('ix_audit_logs_user_id', 'audit_logs', ['user_id'])
+    op.create_index('ix_audit_logs_action', 'audit_logs', ['action'])
+
+
+def downgrade() -> None:
+    op.drop_index('ix_audit_logs_action', table_name='audit_logs')
+    op.drop_index('ix_audit_logs_user_id', table_name='audit_logs')
+    op.drop_index('ix_audit_logs_id', table_name='audit_logs')
+    op.drop_table('audit_logs')