Two costs made a clone of a large repository O(rounds x store) of work; past a few thousand artifacts a round outran the connection deadline and the server answered nothing at all.

The reply's advertise walk classified every rid by calling content(), which INFLATES a wire-backed entry, so announcing the store cost its uncompressed size every round. It now reads held(), answering from the retained form alone. The send gate still reads content(): uploading composes from plaintext.

ServeCtx caches the snapshot and rebuilds only when a stat shows the log grew, so a commit made alongside a live server is still advertised next request. That rebuild is O(store) and stays out of every client's budget: serve primes before it listens, and a round that appends rebuilds before returning. Reuse needs isolation, since the responder interns phantoms as it answers, so a new OverlayStore gives each round a write overlay. Inflating memoises, so a snapshot outliving its round accumulates the whole repository's plaintext; it is released per round.

The one conflict, at the tail of src/cmd/sync.zig, was two independent test appends; resolved as the union. check-in: 6763d35da7 user: dmestas tags: trunk