Ship Windows 1.0.0 and drop Linux from the download page

- release-links: bump to 1.0.0; Windows now points at AgentCompany-1.0.0-x64.exe
  (signed x64 NSIS, uploaded to R2); remove the Linux platform. macOS stays on
  0.4.182 until the 1.0.0 mac build is ready.
- platform-support / product-narrative / footer / layout / faq: remove Linux
  from availability copy, the FAQ, JSON-LD, and footer download links
- e2e: adjust the tracked-download-link count (macOS x2 + Windows = 3)

landing/components/sections/faq.tsx

@@ -44,7 +44,7 @@ const faqs = [
   {
     question: "How are updates delivered?",
     answer:
-      "Desktop updates are published to a Cloudflare-hosted release lane. macOS builds include the signed update metadata required for in-app update checks, while the Windows and Linux installers and packages are distributed from the same release host.",
+      "Desktop updates are published to a Cloudflare-hosted release lane. macOS builds include the signed update metadata required for in-app update checks, while the Windows installer is distributed from the same release host.",
   },
 ];