Factor the native-ingest orchestration out of PatreonIngester into a reusable
ingest_core.Ingester base, parametrized by client/downloader/ledger-models/
constraints/key/platform/error_base. PatreonIngester becomes a thin adapter:
it resolves the Patreon client/downloader, wires the seen/dead-letter models +
UNIQUE-constraint names + _ledger_key into super().__init__, and overrides
_failure_result with the Patreon exception taxonomy. Behavior-preserving — no
table rename, no migration; the public surface (PatreonIngester, _ledger_key,
DEAD_LETTER_THRESHOLD, verify_patreon_credential) is unchanged.
This is the strategic seam: SubscribeStar/etc. now migrate by writing a
~40-line adapter, not by re-implementing the tick/backfill/recovery walk,
tiered skip, checkpoint, and dead-letter logic.
run() moved to ingest_core, so the budget test's monotonic patch repoints to
ingest_core.time.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
