The 2026-08-07 regeneration rendered '?' for 5 of 21 recipes. '?' is meant to be a
rare 'we tried and could not tell'; at that rate it is indistinguishable from noise
and hides the real unknowns. Three causes, none of them genuine uncertainty:
1. URL EXTRACTION BUG (mine). The registry is markdown, so urls appear inside
`backticks` and 'quotes'. The extractor captured the trailing punctuation, so
it fetched https://docs.n8n.io/release-notes/` and https://git.autonomic.zone'`
— both 404 on the malformed url, both 200 when clean. Trailing markdown
punctuation is now stripped. Fixed immich + n8n.
2. STALE REGISTRY URL. mattermost-lts pointed at
docs.mattermost.com/about/mattermost-changelog.html, which 404s; the page moved
to /deploy/. Corrected (same class as the pgautoupgrade fix).
3. WRONG SEMANTICS FOR 'NO UPGRADE'. lasuite-docs and custom-html-tiny were
up-to-date this run, so no scan block existed and the report fell back to '?'.
But a recipe with no upgrade has nothing an upgrade could have fixed — that is
0, not unknown. The report skill now says so explicitly, restricts '?' to scans
that RAN and reported genuinely failed sources, states that benign notes
(no-advisories-published / template URL) never trigger '?', and instructs that
many '?' is itself a bug to raise in the Addendum.
Result across all 16 scanned recipes of that run: 0 failed sources (was 5).
Counts also improved with the classifier fix: discourse 130->133, keycloak ->7.
autonomic-bot
cc-ci-bot
