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/HomeTestimonials.astro

@@ -0,0 +1,15 @@
+---
+import type { TestimonialsSection } from '../../types/home-sections';
+interface Props { section: TestimonialsSection }
+const { section } = Astro.props;
+---
+<section class="section cream-section testimonial-section">
+  <div class="container">
+    <h2>{section.heading}</h2>
+    <blockquote>
+      <strong>{section.featured.author}</strong>
+      {section.featured.paragraphs.map((p) => <p>{p}</p>)}
+    </blockquote>
+    <div class="testimonial-dots" aria-hidden="true">• • • • • • • • • • •</div>
+  </div>
+</section>