docs(migration): document homepage content model and refresh reports

- document the homepage frontmatter workflow in README.md
- note the new section-oriented homepage structure in migration-summary.md
- update cleanup and link reports to match the current implementation
- keep the repo docs aligned with the content-driven homepage model

www/reports/broken-links.md

@@ -1,3 +1,3 @@
 # Broken Links
 
-Rendered output is unavailable in the sandbox; source routes and public assets were audited. No broken internal source links were detected.
+No broken internal build links detected.

www/reports/cleanup-log.md

@@ -18,6 +18,8 @@
 - Rebuilt the homepage in the live section order and rebuilt shared service,
   library-index, and blog-post families against live public references.
 - Reused the same complete live-derived homepage layout for English and Spanish.
+- Reorganized the homepage source into named `home:` frontmatter blocks so the
+  content is easier to inspect and edit without changing the rendered layout.
 - Replaced the extracted linear team article with a dedicated live-derived team grid.
 - Repaired mirror-rewritten PDF, lightbox, CTA, and relative content links.
 - Limited language-switcher choices to translations that have generated routes.

www/reports/migration-summary.md

@@ -35,6 +35,8 @@ Implemented fidelity work includes:
   utility links, footer columns, and contact information.
 - Rebuilt the complete English and Spanish homepages in their live section
   order using one reusable Astro component and self-hosted source assets.
+- Moved the English and Spanish homepage copy into section-oriented `home:`
+  frontmatter blocks so the page is easier to edit in Front Matter CMS.
 - Rebuilt service pages around the live compact title banner and editorial
   presentation, with current visible headings and working calls to action.
 - Recovered and restored the live decorative hero imagery for all mapped