Run artifact

evidence/prompt_outputs/20260815.172854.587Z_readinglist_build_codex.output.txt

RESULT: SUCCESS

FILES CHANGED:
- app/__init__.py
- tests/test_architecture.py
- tests/test_routes.py

SUMMARY:
Implemented isolated test databases and added removal regression coverage. All three acceptance scenarios pass. `sh bin/test.sh`: 26 passed.

BLOCKERS:
- None