ensure! now rechecks trigger presence under BEGIN IMMEDIATE, backfills
drifted rooms.messages_count, and reinstalls all three triggers before
commit so concurrent writers and concurrent boot repairs cannot observe
a partial install or keep a wrong total. install! uses the same
immediate write lock for drop/recreate. Lifecycle regressions cover
missing/partial trigger drift, concurrent ensure!, and writes racing
repair.
Co-authored-by: Thomas Klemm <github@tklemm.eu>
Drop the explicit fixture list and prepend module. Override load_fixtures
only long enough to ensure! + backfill after alphabetical fixture load.
Move destructive trigger DDL into its own test file so parallel CI workers
do not strip triggers from the counter examples.
Co-authored-by: Thomas Klemm <github@tklemm.eu>
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