Audit and polish CommandLayer public site

[GsCommand]

Motivation

• Ensure the public site presents a clearer, shorter product-first landing experience and consistent messaging around ENS identity, ERC-8004 discovery, CLAS receipts, CommandLayer verification, and VerifyAgent.
• Remove or replace remaining customer-facing internal/stale phrases and reduce the chance of stale static HTML remaining on the production domain.
• Add basic SEO/Open Graph/Twitter metadata and a focused sitemap/robots policy to improve discoverability and sharing.

Description

• Updated the homepage title and meta description and replaced the long hero H1/subheadline with concise product-first copy and a CTA hierarchy (Claim an Agent Namespace, Verify a Receipt, View Live Proof) and added the one-line messaging: "ERC-8004 proves who the agent is. CLAS proves what the agent did. CommandLayer verifies the receipt." (file: public/index.html).
• Added canonical, Open Graph, and Twitter card tags to the 13 key public pages (index, claim, verify, proof, receipts, protocol, capabilities, docs, sdk-records, runtime, mcp, schemas, integrations).
• Added public/robots.txt and public/sitemap.xml with the focused public URL list and created sitemap entries for the same 13 pages only.
• Added HTML revalidation headers in vercel.json so HTML pages are deployed with Cache-Control: public, max-age=0, must-revalidate and CDN-Cache-Control: max-age=0, must-revalidate to reduce risk of stale static output being served by the CDN.
• Minor copy cleanups to remove internal phrasing and improve admin wording for the activation pipeline messaging (small admin UI text change in public/admin/claims.html).

Testing

• Ran npm test: 169 tests executed, 165 passed and 4 pre-existing tests failed (these failures are related to ERC-8004/IPFS activation test expectations and the registry configuration; no backend behavior was changed in this PR).
• Ran npm run check:links: all local links and assets resolved across the repository's HTML files.
• Validated SEO metadata and sitemap: a small script inserted canonical/OG/Twitter tags on the 13 pages and verified vercel.json and public/sitemap.xml parse successfully and the number of sitemap entries matches the expected pages; grep checks for forbidden stale phrases returned no public-facing matches.

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Codex Task

[vercel]

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Project	Deployment	Actions	Updated (UTC)
commandlayer-commandlayer-org	Ready	Preview, Comment	Jul 21, 2026 3:05am
commandlayer-org	Ready	Preview, Comment	Jul 21, 2026 3:05am
commandlayer-org111	Ready	Preview, Comment	Jul 21, 2026 3:05am