Retire the 1.0.0 installer and take dead macOS links off the site

Deleting the old Windows build from R2 surfaced something worse: the
two macOS DMG links had no objects behind them at all - the mac builds
were never uploaded, so every mac download click has been a 404.

- R2 now holds exactly one desktop artifact: AC/AgentCompany-1.1.0-x64
  .exe (old exe deleted on operator instruction, verified 404)
- The release manifest drops the macOS entry with a comment explaining
  how it comes back (upload real DMGs first); footer mac links removed;
  hero reads "Available on Windows - macOS build coming soon"
- Root fix in platform-support: FAQ/JSON-LD copy now derives from
  whatever platforms the manifest actually ships instead of
  hard-requiring macos+windows, so the site structurally cannot
  advertise a platform without a real artifact behind it
- Landing e2e updated (>=1 tracked asset) and green; redeployed and
  verified live: no r2.dev leaks, no mac links, coming-soon copy shown,
  tracked download 302s to the 1.1.0 installer

landing/components/layout/footer.tsx

@@ -21,8 +21,6 @@ const footerGroups: { title: string; links: FooterLink[] }[] = [
   {
     title: "Downloads",
     links: [
-      { label: "Apple Silicon", href: getTrackedDownloadHref("macos-arm64-dmg"), external: true },
-      { label: "Intel Mac", href: getTrackedDownloadHref("macos-x64-dmg"), external: true },
       { label: "Windows Installer", href: getTrackedDownloadHref("windows-x64-installer"), external: true },
     ],
   },