The gate's pre-lock refresh ran a *full* sync tick -- peer logs, budget,
both food banks, a rebuild and a push -- in front of the fullscreen lock.
Measured against the live remote: ~18-27s, of which the curated-bank loop
alone was 17s spent fetching nothing (absent on Firebase for every peer, so
each of ~21 peers fell through to a GitHub round trip returning `{}`).
It was also failing: five `sync unavailable (network error trying to refresh
the session)` entries in the last five days, one of them a meal that logged
locally but never published.
The gate has one question -- "has a peer already logged this slot?" -- and
only the peer logs can answer it. `_sync_refresh` does that and nothing
else: one bulk revision-map read, a fetch of only the peers whose revision
moved, merge, re-sign, write. No budget, no banks, no push. The full tick
still runs, after the window closes, so nothing is permanently skipped --
the exhaustive pass just moves off the path the user waits on.
Three state invariants have their own regression tests, because each is
silent when broken: `pushed_rev` survives verbatim (this pass never pushes,
and overwriting it would make the device stop publishing forever),
`peer_revs` is merged rather than replaced (only changed peers are visited),
and the log is written before the state.
Separately, `gate --check` was importing an HTTP stack and a GUI it never
uses. `requests` (~78ms) arrived via `_cli_sync` -> `crdt_sync` and via
`_resolve` -> `_estimator_off`; both are now resolved through module-level
`__getattr__` (PEP 562) and `import_module`, which keeps every existing
`patch.object` target and needs no lint suppression.
Measured: `gate --check` 216ms -> ~110ms; narrow pull 92ms against the live
remote. Accepted trade, documented in `_sync_refresh`: a budget edited on
the phone is not visible in the lock dashboard until the post-window tick.
It cannot affect the lock decision, which is why it is safe to defer.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LJ5YnA3CERitQ57HjMu2Qz
