- adminnotify: MaxUnacknowledgedCriticalLogs global cap exposed as
CriticalLogsCapExceeded — a pre-check helper every insert site pairs with the
atomic fold inside its INSERT (count-then-insert is atomic, closing the
TOCTOU where concurrent inserts could both read a below-cap count).
- jobs/cleanup.go ScanCriticalPaymentLogs: capped at the shared cap, pre-check
skips the scan and logs the suppression.
- scheduling: 1_week_no_pay, 1_month_no_pay, default_hours_changed,
deposit_not_paid_by_deadline and the Square-erasure critical notification all
flood-capped with pre-check + atomic fold (per-booking/per-user dedup kept).
- time-blockers.go CleanupExpiredGiftCards (M4): the expiry SELECT now runs
under FOR UPDATE row locks so the read-expired-then-zero window is atomic —
a concurrent top-up either commits before the SELECT (refreshed last_used_at
drops the card out of the predicate) or blocks until the sweep's tx ends and
revives the zeroed card via its own expiry refresh; the top-up value can
never be destroyed by the sweep.
- flood-cap tests added for 1_week_no_pay; adminnotify unit coverage added.
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