Claude ff4c69ac28
test(perf): judge the #735 switch cycle by floor-cache build counters ( #769 ) ...
The #735 guard compared cache sizes around the warmed twelve-switch cycle.
Once an LRU is full a cold build evicts one entry and every size stays: a
union planted cold in the full pool (8/8) changed no field of the snapshot and
the guard stayed green. Its `openingWallIndex` field read
`card._openingWallIndexCache ? 1 : 0` of a Map and was always 1.
The card now counts real builds of each floor-geometry cache in its miss
branch (`_floorCacheBuilds`: wall union, inner contours, clean floors via a
`cleanFloorForRoom` hook, opening wall index, light barriers, Glow clips,
physical bodies, opening tunnels, light physical bodies) — never on a hit, a
recency refresh, a resize seed or alias, or a clear. One pure decision
(demo/performance/switch-cycle-guard.mjs) judges the window for the benchmark,
the floor-cache smoke and the unit tests: any build of a pooled family fails
and names the family and its growth; the single-slot families may rebuild once
per switch; 2.5D keeps `_isoStructuralBuildCount`. A base bundle without the
counters reads null and is not judged; a candidate must expose them. Each row
reports `switchCycleBuilds` with the size snapshot as a diagnostic (the real
index size there). The budgeted cacheEntries/cacheGrowth keep the index as the
presence flag their `openingWallIndex: 1` ceilings were set on: no budget moves.
Counted run, one sample per profile on the dev base with the counters: every
large-house* profile and isometric-stage3-dense-v1 build 0 in every judged
family, 12/12 physical bodies and opening tunnels, nothing in 2.5D; no family
moved to the reported list. The same runner against a dev bundle reports
`supported: false` and passes.
AC7: demo/smoke_floor_geometry_cache.mjs fills the pool to 8 and drops one
floor's union; a four-switch cycle builds exactly that union (+1, an eviction,
every size the same) and the decision names "wall union" — the old size
comparison sees nothing. AC1 of the smoke also reads the counters. Registry
mutant: a counter that skips the evicting miss (caught by the smoke, checked
by hand); browser inventory 245/200.
Issue: #769
User-Visible: no
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com >
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
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Claude
ff4c69ac28