refactor(home): move page content into per-language YAML sections

All visible text, lists, image refs, and CTAs for the home page now live
in en/index.md and es/index.md as a typed `sections:` frontmatter array.
HomePage.astro is reduced to a thin router; each section type is rendered
by a dedicated component in src/components/home/. Adds .no-balance utility
class to suppress text-wrap: balance on the commitments heading.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

www/src/components/home/HomeBenefits.astro

@@ -0,0 +1,18 @@
+---
+import type { BenefitsSection } from '../../types/home-sections';
+interface Props { section: BenefitsSection }
+const { section } = Astro.props;
+---
+<section class="section cream-section">
+  <div class="container feature-grid benefit-grid">
+    <div>
+      <h2>{section.heading}</h2>
+      <h3>{section.subheading}</h3>
+      <ul class="source-list">{section.items.map((item) => <li>{item}</li>)}</ul>
+    </div>
+    <a class="video-card" href={section.videoHref}>
+      <img src={`/assets/images/${section.videoImage}`} alt={section.videoImageAlt} />
+      <span>▶</span>
+    </a>
+  </div>
+</section>