fix(script): bootstrap sys.path so 'app' imports regardless of cwd in fix_openers

backend/scripts/fix_openers.py

@@ -12,8 +12,13 @@ Usage:
 from __future__ import annotations
 
 import re
+import sys
 from pathlib import Path
 
+# Make `app` importable no matter what directory the script is invoked from.
+# The repo layout is  <backend>/app ; this script lives in <backend>/scripts/.
+sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
+
 from app.config import Config
 from app.services.groups import GroupStore