chore(phase3): 补提交 Task1 日志/清理脚本 + 栏目logo，忽略密码重置脚本

backend/scripts/cleanup_test_data.py

@@ -0,0 +1,28 @@
+"""
+清理测试数据脚本
+"""
+
+from dotenv import load_dotenv
+from pathlib import Path
+
+_env_path = Path(__file__).parent.parent / ".env"
+load_dotenv(str(_env_path))
+
+from sqlalchemy import text
+from app.db.session import engine
+
+conn = engine.connect()
+
+# 清空知识库
+conn.execute(text("DELETE FROM knowledge_embeddings"))
+conn.execute(text("DELETE FROM knowledge_items"))
+conn.commit()
+
+# 查行数
+ki = conn.execute(text("SELECT COUNT(*) FROM knowledge_items")).scalar()
+ke = conn.execute(text("SELECT COUNT(*) FROM knowledge_embeddings")).scalar()
+
+print(f"knowledge_items rows: {ki}")
+print(f"knowledge_embeddings rows: {ke}")
+
+conn.close()