docs: new social card, demo 6 output on 0.28.2, and AI guide links

[imran-siddique]

This clears three leftovers on agentrust-io.com from the chain repositioning: the social card, the demo 6 quote, and the AI guide links to the docs hosts that were missing.

Social card. og.png still read "An open ecosystem for verifiable AI agents" over "Build · Test · Adopt · Sustain", the framing the homepage dropped in #63. It was also a JPEG saved under a .png name, served as image/png. The new card is a real 1200x630 PNG with the tagline, the homepage headline "Prove what your AI ran, and what it did." and the four chain steps. It is rendered by tools/render-og-card.py, which holds the card as an HTML template and screenshots it with headless Chrome, so the next wording change is an edit and one command rather than a lost design file. The template is not an .html file because check-site.py and the sitemap treat every .html in the repository as a published page.

Social tags. community, marketplace, registry and verify had og:image with no width, height or alt, while the other pages carry all three. They now match, and the homepage alt changes from "an open ecosystem for verifiable AI agents" to the tagline on the card.

Demo 6 output. The quote on /demos was labelled as a verbatim run on weight-custody-manifest 0.25.0. It is now the output of python demo-06-weight-custody/run.py on 0.28.2, run on 2026-09-14, which adds the "What this is, and is not" heading, the custody active line and the last line of the scope statement. The label no longer says verbatim, and the note under it now lists what is shortened for width: hashes, the section rules, the gate's enforced: note and the derivative hash.

AI guide and availability

• llms.txt "More documentation" adds the Weight Custody Manifest, TRACE conformance suite and governance directory summaries.
• tools/check-availability.py probes wcm.agentrust-io.com for home, robots.txt, sitemap.xml and llms.txt, and DISCOVERY.md says eight hosts.
• WCM's llms.txt and robots.txt return 404 today. They ship in weight-custody-manifest's AI guide PR, which should merge and deploy before this one, or the scheduled availability run fails.

Checked

• file og.png: PNG image data, 1200 x 630 (was JPEG image data).
• The demo run exits 0 on weight-custody-manifest 0.28.2, and each quoted line matches its output.
• check-site.py, build-controls.py --check, build-discovery.py --check, check-discovery.py, check-dashes.js and marketplace.test.js pass.

Generated with Claude Code

https://claude.ai/code/session_013aK3gVWzNdcM3hZ2o2awK2