test: cover cold onboarding settings help

Exercise the real lazy onboarding runtime, verify all five space help controls,
and prove that opening help neither mutates the draft nor eagerly loads the
editor runtime.

Issue: #86
User-Visible: no

demo/smoke_help_affordance.mjs

@@ -1,6 +1,6 @@
 // Issue #68: contextual help trigger parity, dialog overlay ownership and the
 // real non-Popover fallback. Run by the prerelease smoke suite, not on edits.
-import { launch, checkAll, finish } from './serve.mjs';
+import { launch, launchColdView, checkAll, finish } from './serve.mjs';
 
 const { page, browser } = await launch({ width: 390, height: 780 }, 1);
 await page.keyboard.press('Tab');
@@ -323,6 +323,64 @@ const res = await page.evaluate(async () => {
   return out;
 });
 
+// Empty-install onboarding owns a separate lazy runtime and a second copy of
+// the space dialog. Exercise that production chunk, not merely the regular
+// editor template or its source inventory (#86 review r1 M1).
+const onboarding = await launchColdView({ width: 390, height: 780 });
+await onboarding.page.evaluate(async () => {
+  const card = window.__card;
+  card._onboardingShown = false;
+  card._serverCfg = { ...card._serverCfg, spaces: [] };
+  card._model = [];
+  card.hass = { ...card.hass, floors: {}, areas: {} };
+  card.requestUpdate();
+  await card.updateComplete;
+});
+await onboarding.page.waitForFunction(() => {
+  const card = window.__card;
+  return card._onboardingRuntime && !card._editorRuntime
+    && card.renderRoot.querySelector('hp-dialog');
+});
+const onboardingHelp = await onboarding.page.evaluate(async () => {
+  const card = window.__card;
+  const root = card.renderRoot;
+  const keys = [
+    'space.cell_cm.help', 'space.zero_wall_style.help', 'space.bg_mode.help',
+    'space.north.help', 'space.fill_mode.help',
+  ];
+  const help = (key) => root.querySelector(`hp-help[data-help-key="${key}"]`);
+  const before = JSON.stringify({
+    cellCm: card._spaceDialog?.cellCm,
+    zeroWallStyle: card._spaceDialog?.zeroWallStyle,
+    bgMode: card._spaceDialog?.bgMode,
+    northDeg: card._spaceDialog?.northDeg,
+    fillMode: card._spaceDialog?.fillMode,
+  });
+  const zeroWallHelp = help('space.zero_wall_style.help');
+  zeroWallHelp?.shadowRoot?.querySelector('.trigger')?.click();
+  await zeroWallHelp?.updateComplete;
+  await new Promise((resolve) => requestAnimationFrame(() => requestAnimationFrame(resolve)));
+  const after = JSON.stringify({
+    cellCm: card._spaceDialog?.cellCm,
+    zeroWallStyle: card._spaceDialog?.zeroWallStyle,
+    bgMode: card._spaceDialog?.bgMode,
+    northDeg: card._spaceDialog?.northDeg,
+    fillMode: card._spaceDialog?.fillMode,
+  });
+  return {
+    inventory: keys.every((key) => !!help(key)?.shadowRoot?.querySelector('.trigger')),
+    selectedHelpOpened: zeroWallHelp?.shadowRoot
+      ?.querySelector('.trigger')?.getAttribute('aria-expanded') === 'true',
+    readOnly: before === after,
+    editorStillLazy: !!card._onboardingRuntime && !card._editorRuntime,
+  };
+});
+res.party1ColdOnboardingInventory = onboardingHelp.inventory;
+res.party1ColdOnboardingHelpOpens = onboardingHelp.selectedHelpOpened;
+res.party1ColdOnboardingHelpIsReadOnly = onboardingHelp.readOnly;
+res.party1ColdOnboardingKeepsEditorLazy = onboardingHelp.editorStillLazy;
+await onboarding.browser.close();
+
 res.keyboardFocus = keyboardFocus;
 
 checkAll(res);

docs/specs/086-settings-help-content-party1.md

@@ -198,7 +198,10 @@ save paths всех настроек остаются прежними. Мигр
 
 ### Browser smoke
 
-- по одному placement на general, space, marker и Device catalog;
+- по одному placement на general, regular-editor space, marker и Device catalog;
+- отдельный cold-install запуск lazy onboarding runtime: все пять `space.*`
+  placement присутствуют, editor runtime остаётся незагруженным, открытие
+  подсказки не меняет draft;
 - mouse hover, keyboard focus/Enter/Escape и touch toggle/outside close;
 - open help does not change setting/show-hidden action;
 - disabled group, native Popover and forced fallback;