Initial commit: 浼佷笟寰俊 AI 鏈哄櫒浜哄姪鐞?MVP

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/models/audit_log.py

@@ -0,0 +1,23 @@
+"""审计日志（最简）：id、actor_user_id、action、meta_json、created_at。"""
+import uuid
+from datetime import datetime
+
+from sqlalchemy import String, DateTime, Text, ForeignKey
+from sqlalchemy.dialects.postgresql import UUID, JSONB
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.models.base import Base
+
+
+class AuditLog(Base):
+    __tablename__ = "audit_logs"
+
+    id: Mapped[uuid.UUID] = mapped_column(
+        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4
+    )
+    actor_user_id: Mapped[uuid.UUID | None] = mapped_column(
+        UUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"), nullable=True, index=True
+    )
+    action: Mapped[str] = mapped_column(String(128), nullable=False, index=True)
+    meta_json: Mapped[dict | None] = mapped_column(JSONB, nullable=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=datetime.utcnow)