HomePage: initial build with hero, FuneralFinder, features, reviews, FAQ

- Hero section with display3 serif heading, warm bg, 50/50 split with image slot
- FuneralFinderV3 widget integrated as overlapping card (negative margin pattern)
- Partner logos carousel with CSS-only infinite scroll, prefers-reduced-motion
- 4 feature cards (outlined, compact padding, warm circular icon backgrounds)
- Reviews section (dark bg, Google aggregate rating, 3 testimonial cards)
- CTA banner with displaySm serif heading ("We Are Here When You Need Us")
- FAQ accordion (reuses SummaryStep pattern)
- Full a11y: section landmarks, aria-labelledby, heading hierarchy h1→h2→h3
- Grief-sensitive copy throughout (no urgency language, warm tone)
- Chromatic added as devDependency, build script updated
- 4 stories: Default, WithoutReviews, Minimal, Mobile

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/pages/HomePage/index.ts

@@ -0,0 +1,2 @@
+export { HomePage, default } from './HomePage';
+export type { HomePageProps, PartnerLogo, FeatureCard, Testimonial, FAQItem } from './HomePage';