backfilling-sources

Backfill a changelog source's full history locally in Claude Code via the backfill-source / backfill-sweep dynamic Workflows — preflight-gated, window-capped, budget-gated extraction written through the idempotent /batch upsert, with no remote extraction inference bill. Use when a source has a lot of history to pull in and running the remote update workflow per window would be too expensive. Local Claude Code only.