Rule creation now goes through POST /alerts/rules (exercises saveTargets on the
write path). Clock is replaced with @MockBean(name="alertingClock") and re-stubbed
in @BeforeEach to survive Mockito's inter-test reset. Six ordered steps:
1. seed log → tick evaluator → assert FIRING instance with non-empty targets (B-1)
2. tick dispatcher → assert DELIVERED notification + lastNotifiedAt stamped (B-2)
3. ack via REST → assert ACKNOWLEDGED state
4. create silence → inject PENDING notification → tick dispatcher → assert silenced (FAILED)
5. delete rule → assert rule_id nullified, rule_snapshot preserved (ON DELETE SET NULL)
6. new rule with reNotifyMinutes=1 → first dispatch → advance clock 61s →
evaluator sweep → second dispatch → verify 2 WireMock POSTs (B-2 cadence)
Background scheduler races addressed by resetting claimed_by/claimed_until before
each manual tick. Simulated clock set AFTER log insert to guarantee log timestamp
falls within the evaluator window. Re-notify notifications backdated in Postgres
to work around the simulated vs real clock gap in claimDueNotifications.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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