feat: integrate isometric labs renderer

Issue: #89
User-Visible: no

test/iso-walls.test.mjs

@@ -1,6 +1,8 @@
 import test from 'node:test';
 import assert from 'node:assert/strict';
-import { buildIsoWallGeometry, isoGeometryFingerprint } from '../test-build/iso-walls.js';
+import {
+  buildIsoWallGeometry, isoEffectiveView, isoGeometryFingerprint,
+} from '../test-build/iso-walls.js';
 
 const closed = (points) => [...points, points[0]];
 const square = closed([[0, 0], [100, 0], [100, 100], [0, 100]]);
@@ -42,3 +44,11 @@ test('fingerprint is content based, stable and sensitive to in-place geometry ed
     isoGeometryFingerprint({ rooms: value.rooms, showBorders: false }));
 });
 
+test('latched renderer failures stay flat until explicit retry or a new fingerprint', () => {
+  const failed = new Set(['space|old']);
+  assert.equal(isoEffectiveView('iso', 'space|old', failed), 'flat');
+  assert.equal(isoEffectiveView('iso', 'space|new', failed), 'iso');
+  assert.equal(isoEffectiveView('flat', 'space|new', failed), 'flat');
+  failed.delete('space|old');
+  assert.equal(isoEffectiveView('iso', 'space|old', failed), 'iso');
+});

test/isometric-contract.test.mjs

@@ -0,0 +1,33 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+
+const card = readFileSync(new URL('../src/houseplan-card.ts', import.meta.url), 'utf8');
+const styles = readFileSync(new URL('../src/styles.ts', import.meta.url), 'utf8');
+const spaceCard = readFileSync(new URL('../src/space-card.ts', import.meta.url), 'utf8');
+const spaceRender = readFileSync(new URL('../src/space-render.ts', import.meta.url), 'utf8');
+
+test('Labs iso is presentation-only and absent from the secondary space card', () => {
+  assert.match(card, /subscribeLabs\(CARD_VERSION/);
+  assert.match(card, /data-hp="projection-toggle"/);
+  assert.match(card, /this\._labsIso && this\._mode === 'view' && !this\._kiosk/);
+  assert.doesNotMatch(spaceCard, /hp-labs|iso-walls|projection-toggle|view\.volumetric/);
+  assert.doesNotMatch(spaceRender, /hp-labs|iso-walls|projection-toggle|view\.volumetric/);
+});
+
+test('renderer uses SVG geometry without a CSS 3D context or new window light', () => {
+  assert.match(card, /<svg class="iso-walls-svg"/);
+  assert.match(card, /class="iso-wall-top"/);
+  assert.match(card, /class="iso-wall-side"/);
+  assert.doesNotMatch(styles, /perspective\s*:|preserve-3d|rotateX\(|rotateZ\(/);
+  assert.doesNotMatch(card, /iso-window|window-light|vertical-door/);
+});
+
+test('all current floor/live layers remain in the one main scene', () => {
+  for (const renderer of [
+    '_renderDecorLayer()', '_renderRoomHoverFill(roomHover)', '_renderGlowLayer(space, disp)',
+    '_renderSunRays(space)', '_renderOpenings(disp)', '_renderVacuums(devs, view)',
+  ]) assert.ok(card.includes(renderer), `missing ${renderer}`);
+  assert.match(card, /const point = this\._scenePoint\(\[pos\.x, pos\.y\]\)/);
+  assert.match(card, /const point = this\._scenePoint\(\[p\.x, p\.y\]\)/);
+});