Three categories of pre-existing CI failure on PR #42:
1. typecheck (mypy src/cartsnitch_api, 9 errors):
- src/cartsnitch_api/config.py:89 — Settings() needs required secret
args that only exist in env at runtime; suppress with
type: ignore[call-arg]
- src/cartsnitch_api/cache.py:38 — redis-py returns Any/bytes,
normalize to str before returning from get()
- src/cartsnitch_api/middleware/rate_limit.py:128,131,134 — three
limiter globals were inferred as RedisSlidingWindow on the if
branch then re-assigned InMemorySlidingWindow on else; declare
them as RateLimitBackend up front
- src/cartsnitch_api/middleware/rate_limit.py:181,187 —
RateLimitBackend Protocol didn't declare max_requests even
though both InMemorySlidingWindow and RedisSlidingWindow expose
it; add max_requests: int to the Protocol
2. test (FK constraint on purchases.user_id):
- tests/conftest.py:_create_test_user_and_session stored user_id
as 32-char hex; test_e2e conftest reads it via raw SQL and wraps
in uuid.UUID (36 chars) before passing to Purchase.user_id, so
the FK never matched. Switch back to str(uuid.uuid4()) (36 chars)
so the stored value and the FK bind value use the same format.
3. Verify lint + format clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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