Files
orca/cloud/apps/relay
Jinwoo Hong 2de7381204 fix(relay): supersede a reserve seat from the feed once a later, newer join shows (#28716)
* test(relay): check invariant 4 (one demotion winner) in the step-5 simulation

Every demotion now names its winner (the newer booking, or the row). The model
flags a director that names a different winner for a divergence another already
named, and a host whose two seats are each demoted for the other. A fault where
directors break level ties by their own cell order shows the check fires.
Violations are capped per invariant so one flood cannot hide another class.

Claude-Session: f2fe8cb5-4467-4a25-8aab-98598b70791f

* test(relay): bound unseen duplicates by the silence close and assert all invariants on contested ties

A reserve seat the booking director's map had not seen (joined, then half-open within a poll)
is never superseded and has no lease to re-check, so it lasts until the cell's control silence
close (75 s + one 15 s ping). Invariant 3 now uses that bound for such seats, and the
level-divergence config asserts every invariant.

Stale maps now judge a divergence another director already demoted, so the config's
"contested" counter (divergences judged by two or more directors) is the case invariant 4
guards. The silence-close constant now matches production (90 s, not 100 s).

Claude-Session: f2fe8cb5-4467-4a25-8aab-98598b70791f

* test(relay): raise the floor on map-judged demotes and count only level contests

A reconcile whose map has not seen another director's demotion still demotes in
production, which raises its epoch floor; the model now does too. The contested
counter counts only same-epoch pairs, the only ones invariant 4 can split. The
keep-this-seat rule is one helper.

Claude-Session: f2fe8cb5-4467-4a25-8aab-98598b70791f

* refactor(relay): name the simulation's fault-kept seat check for the fault

Claude-Session: f2fe8cb5-4467-4a25-8aab-98598b70791f

* fix(relay): supersede a reserve seat from the feed once a later, newer join shows

A half-open seat the booking director's map had not yet seen was never demoted and held its
cell until the 75 s control silence close. Directors now demote it once both joins are in the
map; the simulation holds invariant 3 at the supersede bound for it.

Claude-Session: f2fe8cb5-4467-4a25-8aab-98598b70791f

* fix(relay): outrank only past cell clock skew, reuse demoteSeat, keep invariant 3's loose clock running

Claude-Session: f2fe8cb5-4467-4a25-8aab-98598b70791f

* refactor(relay): share the outrank rule with the simulation, pin the skew boundary

Claude-Session: f2fe8cb5-4467-4a25-8aab-98598b70791f

* fix(relay): count only confirmed level demotions and every second judgment, and bound duplicates by placement records alone

Claude-Session: f2fe8cb5-4467-4a25-8aab-98598b70791f

* fix(relay): a drained seat keeps its drain grace under a demote, and the feed reports each seat once

Claude-Session: f2fe8cb5-4467-4a25-8aab-98598b70791f

* refactor(relay): name the outranked-report bound and the reconcile backstop

Claude-Session: f2fe8cb5-4467-4a25-8aab-98598b70791f
2026-10-14 17:06:33 -04:00
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