Modernize Flask/SQLAlchemy Todo API to Python 3.12

Target: simple_api — pinned commit: 17067fe3113a746e0a5044af88f5777d6e50c999 — license: MIT

Steps: 3 done / 0 failed / 0 not run — total cost: 2.25 credits — reconciliation: MATCH (ledger 2.247946, Bob 2.247946)

IDTitleStatusGate verdict negative controlcreditsAttemptsCommit
step_01Fix imports, update requirements, make app importable and runnabledoneACCEPTbroken copy failed every check0.38131acd7b57
Gate checks & controlChecks:
step✓exit 0 * Serving Flask app 'app' * Debug mode: off WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead. * Running on http://127.0.0.1:5077 Press CTRL+C to quit 127.0.0.1 - - [16/Oct/2026 15:47:21] "GET /todos HTTP/1.1" 200 -
tests✓exit 0
start✓exit 0
url:http://127.0.0.1:5077/todos✓exit 0
Control checks:
step✗exit 1Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/tmp6tuz1o2z/broken/app.py", line 1, in <module> raise RuntimeError('deliberate break') RuntimeError: deliberate break
tests✗exit 1Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/tmp6tuz1o2z/broken/app.py", line 1, in <module> raise RuntimeError('deliberate break') RuntimeError: deliberate break
start✗exit 1
url:http://127.0.0.1:5077/todos✗timeout after 20s
step_02Fix SQLAlchemy 2.x session setup and the missing 404 guard in PUTdoneACCEPTbroken copy failed every check1.383012304283
Gate checks & controlChecks:
step✓exit 0 * Serving Flask app 'app' * Debug mode: off WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead. * Running on http://127.0.0.1:5077 Press CTRL+C to quit 127.0.0.1 - - [16/Oct/2026 15:51:00] "POST /todos HTTP/1.1" 201 - 127.0.0.1 - - [16/Oct/2026 15:51:00] "GET /todos/1 HTTP/1.1" 200 - 127.0.0.1 - - [16/Oct/2026 15:51:00] "PUT /todos/1 HTTP/1.1" 201 - 127.0.0.1 - - [16/Oct/2026 15:51:00] "GET /todos/99999 HTTP/1.1" 404 - 127.0.0.1 - - [16/Oct/2026 15:51:00] "DELETE /todos/1 HTTP/1.1" 204 -
tests✓exit 0
start✓exit 0
url:http://127.0.0.1:5077/todos✓exit 0
Control checks:
step✗exit 1Traceback (most recent call last): File "/tmp/tmp502imz93/broken/models.py", line 1, in <module> raise RuntimeError('deliberate break') RuntimeError: deliberate break
tests✗exit 1Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/tmp502imz93/broken/app.py", line 1, in <module> raise RuntimeError('deliberate break') RuntimeError: deliberate break
start✗exit 1
url:http://127.0.0.1:5077/todos✗timeout after 20s
step_03Add pytest test suite covering CRUD and not-found casesdoneACCEPTbroken copy failed every check0.290010572574
Gate checks & controlChecks:
step✓exit 0============================= test session starts ============================== platform linux -- Python 3.12.3, pytest-9.1.1, pluggy-1.7.0 -- $TARGET_VENV/bin/python3.12 cachedir: .pytest_cache rootdir: /srv/bob-verified/work/simple_api collecting ... collected 8 items test_api.py::test_get_todos_returns_200 PASSED [ 12%] test_api.py::test_post_todo_creates_and_returns_201 PASSED [ 25%] test_api.py::test_get_todo_returns_200_with_correct_task PASSED [ 37%] test_api.py::test_put_todo_updates_task_and_returns_201 PASSED [ 50%] test_api.py::test_delete_todo_returns_204 PASSED [ 62%] test_api.py::test_get_nonexistent_todo_returns_404 PASSED [ 75%] test_api.py::test_put_nonexistent_todo_returns_404 PASSED [ 87%] test_api.py::test_delete_nonexistent_todo_returns_404 PASSED [100%] ============================== 8 passed in 0.31s ===============================
tests✓exit 0
start✓exit 0
url:http://127.0.0.1:5077/todos✓exit 0
Control checks:
step✗exit 2============================= test session starts ============================== platform linux -- Python 3.12.3, pytest-9.1.1, pluggy-1.7.0 -- $TARGET_VENV/bin/python3.12 cachedir: .pytest_cache rootdir: /tmp/tmp17voy2zr/broken collecting ... collected 0 items / 1 error ==================================== ERRORS ==================================== _________________________ ERROR collecting test_api.py _________________________ test_api.py:1: in <module> raise RuntimeError('deliberate break') E RuntimeError: deliberate break =========================== short test summary info ============================ ERROR test_api.py - RuntimeError: deliberate break !!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!! =============================== 1 error in 0.07s ===============================
tests✗exit 1Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/tmp17voy2zr/broken/app.py", line 1, in <module> raise RuntimeError('deliberate break') RuntimeError: deliberate break
start✗exit 1
url:http://127.0.0.1:5077/todos✗timeout after 20s

Re-verify

This re-runs the checks against the target. It makes no AI call and costs nothing.

Last run: 2026-10-16T20:04:20Z — all_ok: yes

2026-10-16T20:04:20Z start reverify of 4 checks
2026-10-16T20:04:47Z step_01: ACCEPT
2026-10-16T20:05:12Z step_02: ACCEPT
2026-10-16T20:05:38Z step_03: ACCEPT
2026-10-16T20:06:00Z final: ACCEPT
2026-10-16T20:06:00Z done all_ok=True