Removes the operator step that was implicit in the v1.4.35 foundation
release. Self-hosters no longer need to run scripts/backfill-rollups
after upgrade; the worker boot discovers any account with measurements
but no rollup coverage and enqueues a one-shot full fold via pg-boss.
New rollup-full-backfill queue + handler folds one user per job at
serial concurrency. enqueueBootTimeRollupBackfill runs once at
startReminderWorker boot, idempotent across reboots via the
discovery query (matches only zero-rollup accounts) and a
singleton-key per user so fast restarts coalesce.
Best-effort: discovery errors surface through the helper's return
value and are logged via workerLog; the worker boot never fails
because the backfill missed.
Tests: 4285 unit + 230 integration. tsc + lint clean.
Marc-André Bombeck
5a3ca330ac