Add automated local link and asset checker

[GsCommand]

Motivation

• Provide a lightweight, repeatable repo script to catch broken internal links and missing local assets before releases.
• Ensure release audits detect accidental references like /icon2.png and missing page or asset targets in public/**/*.html without requiring network access.

Description

• Add scripts/check-local-links.mjs, a small Node script that scans public/**/*.html, extracts local references from href, src, content (when it begins with /), and url(...) inside inline <style> blocks and normalizes them for resolution.
• Resolve local routes so / => public/index.html, /page => public/page.html or public/page/index.html, and treat direct paths (e.g. /favicon.ico) as files under public; external schemes and anchors are ignored.
• Allowlist known dynamic runtime routes including /verify/r, /api/verify, /api/agents/verifyagent, /api/examples/coinbase-webhook, /api/examples/x402-paid-action, /api/auth/nonce, /api/auth/verify, and /api/ens/owned so UI references to runtime APIs do not fail the check.
• Enforce a forbidden-token check for accidental references to icon2.png (obfuscated inside the script to avoid self-detection), and exit with non-zero status when missing targets or forbidden tokens are found, otherwise print a concise success message.
• Add/verify an npm script entry check:links to run the checker via node scripts/check-local-links.mjs (exists in package.json).

Testing

• Ran npm test and all tests passed (103 tests, 0 failures) so existing test suite is unchanged and green.
• Ran npm run check:links and it completed successfully with the message All local links/assets resolved across 25 HTML files..
• Ran grep -RIn "icon2.png" . and confirmed no matches found after obfuscating the forbidden token inside the checker, so the forbidden-token enforcement did not produce false positives.

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Codex Task

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Project	Deployment	Actions	Updated (UTC)
commandlayer-commandlayer-org	Ready	Preview, Comment	May 24, 2026 12:01am
commandlayer-org	Ready	Preview, Comment	May 24, 2026 12:01am
commandlayer-org111	Ready	Preview, Comment	May 24, 2026 12:01am