One-liners per commit and a progress narrative per card, plus the
swappable provider layer both depend on, ported from the chat/ structure
in MEGAIFRASTRUCTURE.
Model and cost are measured rather than assumed: the full 779-commit
backfill costs about ninety cents on claude-opus-5, so model choice here
is a quality decision and not a cost one. Batch API considered and
rejected — it saves roughly forty cents and adds a job state machine.
Records the rules the non-editable preamble must guarantee, each tied to
a specific way a summary could mislead a paying client.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>