fix: make database cleanup fail with a non-zero exit (#112)

A caught exception used to end the process with status 0, so callers
treated a failed wipe as success.

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Kris K <zhouxiaoka@users.noreply.github.com>

CHANGELOG.md

@@ -7,7 +7,8 @@
 
 ## [未发布]
 
-_（本周尚无改动）_
+### 修复
+- 数据库清理脚本失败时返回退出码 1。之前异常被接住后进程仍以 0 退出，调用方会以为清理已经成功。
 
 ## [1.3.1] - 2026-09-21
 

clean_database.py

@@ -51,6 +51,7 @@ def clean_database():
     except Exception as e:
         print(f"❌ 清理数据库时发生错误: {e}")
         db.rollback()
+        sys.exit(1)
     finally:
         db.close()