Landing page bakes the platform stats of the deploy into its static HTML; browsers then swap in the live numbers

Crawlers and LLM fetchers run no JS and saw only the skeleton of the stats
band. app/page.tsx now awaits one read of the public stats blob during
next build (lib/platformStats.ts: manifest, then the versioned file it
names) and renders the numbers into the export. StatsBand starts from that
snapshot and replaces it with the live numbers; a failed live read keeps
the baked numbers instead of hiding the band.

The read is awaited at page level, not under Suspense: React moves a
resolved boundary of a page this size into a hidden div at the end of the
body. It uses no-store (route force-static), so Next's fetch cache cannot
hand a later build the previous numbers. Fail-soft: without a snapshot the
page ships the skeleton and loads live as before, and deploy-web.yml warns.

The browser now revalidates both files (no-cache instead of force-cache):
the backend rewrites the per-day file every 2 hours under immutable, so a
copy cached earlier that day would have made the numbers drop after load.

The page body moved to components/landing/LandingPage.tsx, which the
marketing guards render synchronously; StatsBand left the .json() ratchet
baseline; the sitemap lastmod of / includes the body.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N4ddfosgdeCwXo7NvB9xd2

.github/workflows/deploy-web.yml

@@ -108,6 +108,8 @@ jobs:
           NEXT_PUBLIC_ENTRA_REDIRECT_URI: ${{ vars.NEXT_PUBLIC_ENTRA_REDIRECT_URI }}
           NEXT_PUBLIC_ENTRA_POST_LOGOUT_REDIRECT_URI: ${{ vars.NEXT_PUBLIC_ENTRA_POST_LOGOUT_REDIRECT_URI }}
           NEXT_PUBLIC_API_BASE_URL: ${{ vars.NEXT_PUBLIC_API_BASE_URL }}
+          # Browsers load the live stats through it, and the build reads it once to bake the
+          # numbers of this moment into the landing page's static HTML (lib/platformStats.ts).
           NEXT_PUBLIC_PLATFORM_STATS_MANIFEST_URL: ${{ vars.NEXT_PUBLIC_PLATFORM_STATS_MANIFEST_URL }}
           NEXT_PUBLIC_APPINSIGHTS_CONNECTION_STRING: ${{ secrets.NEXT_PUBLIC_APPINSIGHTS_CONNECTION_STRING }}
           # Build stamp for public/version.json (scripts/generate-version.js in prebuild);
@@ -121,6 +123,9 @@ jobs:
           npm run build
           test -f out/version.json || { echo "out/version.json missing - export did not run"; exit 1; }
           test -f out/whats-new.json || { echo "out/whats-new.json missing - whats-new prebuild did not run"; exit 1; }
+          # Fail-soft like the star count: browsers still load the stats live; only crawlers and
+          # LLM fetchers, which run no JS, see no numbers until the next deploy.
+          grep -q 'data-stats-snapshot=' out/index.html || echo "::warning::Platform stats were not baked into the landing page (reason in the build log) - crawlers and LLM fetchers see no numbers until the next deploy"
 
       # One archive of the exact bytes that get uploaded, so the attestation has a single subject.
       - name: Package export