When forecast_rooms_for_date throws inside covers_model, asyncpg aborts the
whole transaction. The exception was being caught with a warning but no rollback,
so every subsequent query in the same request failed. Added db.rollback() in
all three exception handlers (breakfast pickupv2, dinner pickupv2, per-day loop)
and moved public.py's rollback into a finally block so it always fires even
when covers_model returns normally with a corrupted transaction.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
jtricerolph
455396c965