User re-gate 2026-06-12: ran past distant buildings, 'Seems to have
been fixed' - no flicker/vanish. The per-building flood-admission
bistability (#127, the building-flap mechanism behind the tower roof
flap and #123 'buildings vanish when running past') is gone.
Root: the bistable knife-edge admission died with the W=0
polyClipFinish clip port (987313a - the #119/#120 work that 'kills the
knife-edge class everywhere') plus the #120 containment-rejection
growth fix. The captured-pair evidence (tower-viewer-capture.log,
2026-06-11) PRE-dates all of those - it was that same near-eye knife
edge, not a separate distant mechanism.
Desk confirmation (both green at HEAD):
- CapturedFlipPair_AdmissionIsStable: the original 4 cm flip pair is
now |A|=|B| with zero diff across all FOVs and both pre-gate states.
- DistantBuildingStrafe_NoAdmissionChurn (new regression pin): 0
admission churn across all 21 building groups x {10,30,60,120,190} m
x 100 mm-step run-past strafes, both pre-gate states. A stable flood
toggles each cell at most once over a monotone eye path; this asserts
no cell toggles >=2x.
ISSUES.md #127 -> CLOSED with the DO-NOT-RETRY note (no re-opening the
BuildFromExterior seed gates for a flap symptom without a fresh HEAD
repro - the captured-pair lead is dead). Render digest banner updated.
Suites: App 264+1skip / Core 1443+2skip / UI 420 / Net 294.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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