Owner's decision in #694: icons must not change position with state.
Since #651 the rigid overlay layout sized a device by its value text and
badges, which change with HA state: a light toggling on changed its width
from 37.2 to 26.7 CSS px and re-laid out all 62 overlays of the dense
scene (~385 of 495 ms of stateUpdate; v1.77.0 had 208 ms).
- iso-scene-render.ts: the layout sees the state-free tile (icon at its
configured size, no value text, badge or supplemental metrics). An
HA-only change keeps the layout and refreshes only the visual extent
that scene bounds read, without a collision search.
- iso-overlays.ts: the rigid-group search skips candidates that already
lose to the fallback on room, then wall violations (lexicographic
bound). The result is unchanged — identical placement hash on the dense
scene — at about 35 % less work.
- docs/ISOMETRIC.md, changelogs; test #711; mutant
iso-device-layout-follows-state-again (written, not run — #709).
Local isometric-stage3-dense-v1, 3 samples: stateUpdate 522 → 89 ms
(v1.77.0: 208), modelReady 3665 → 3129, switchCycle 5544 → 4700.
Issue: #711
User-Visible: yes
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
Keep the raised overlay footprint as calculation-only geometry for collision, nudge and fit while removing its painted SVG surface and texture. Update Stage 3 contracts, smokes, golden harness rules and synchronized bundles.
Issue: #471
User-Visible: no
Claude