Audit stale community contacts and record verification dates

[n30nex]

Summary

The live community directory contains confirmed dead contacts, and most listings do not have a verification date. That makes it difficult for visitors or maintainers to distinguish a current contact from an old one.

Audit target: production revision 578e7d1cdcbeeb03a9946b39e7fdfc2f932dae33 on 2026-08-29.

Confirmed findings

• The Réseau Mesh du Saguenay–Lac-Saint-Jean YTF Discord link on the live Quebec page uses invite wUR394yXt; Discord's public invite API returns 404 Not Found.
• The Calgary MeshCore Network link on the live Alberta page points to https://meshcorecalgary.ca/. Its authoritative Cloudflare zone currently has no A, AAAA, or CNAME answer, so the link cannot resolve.
• The Mesh Quebec link on the live Quebec page points to https://qcmesh.net, which times out on HTTPS. The HTTP endpoint currently redirects to https://t.me/meshtQuebec.
• Issue [Community idea] Fix Discord link #81 already covers the separate expired StoonMesh invite (7yGnJuMGkG), so this issue should not duplicate that replacement request.
• data/communities.json has 24 listings: 22 have no verified_at date. Of 59 contacts, 57 are still marked needs-review and only 2 are marked verified.
• python scripts/validate-communities.py reports the same 22 missing community verification dates as warnings, but exits successfully.

Expected result

• Mark confirmed dead contacts as expired or replace/remove them after checking with the relevant community.
• Record a review date for each listing/contact that is kept.
• Add a lightweight recurring or release-time contact audit so expired Discord invites and dead community domains are detected before they remain live for long.
• Keep transient blocks (403, 429, bot protection) distinct from confirmed failures; they should not automatically remove a link.

Acceptance checks

• The three confirmed failures above no longer lead visitors to dead endpoints.
• Issue [Community idea] Fix Discord link #81 remains the source of truth for the StoonMesh replacement.
• The validator fails or produces a tracked actionable result when a contact is confirmed expired or a review deadline has passed.