feat(check-versions): gate the catalog's stat lines against plugin badges [skip-docs]

[skip-docs]: the user-facing doc here is CLAUDE.md, not README.md. This is a
maintainer-side consistency gate — the catalog landing page should not describe
it — and CLAUDE.md gains a full paragraph covering the rule, the measured
badge-less gap, and the never-hand-edit-a-stat-line instruction. README.md
changes by exactly one number because the gate found it wrong.

The catalog restates each plugin's counts in a per-plugin stat line, and those
numbers rot silently: nothing compared them to anything. Measured across all 11
plugin READMEs today, config-audit's line claimed 1410 tests while the plugin's
own badge said 1441.

Rule is PER-AXIS, not per-plugin. For each number on a catalog stat line, if the
plugin carries a shields badge for that axis, they must agree (ERROR otherwise);
if it carries no such badge, the axis is skipped. This was measured, not assumed:
21 axis-pairs are badge-covered, but 14 axes across 8 of the 11 plugins are
badge-less (voyage 4, ms-ai-architect 3, repo-mailbox 2, ai-psychosis 2,
linkedin-studio 1, claude-design 1, graceful-handoff 1). A per-plugin exception
list — the original sketch, scoped around voyage alone — would have had to name 8
of 11 repos and be hand-edited for every new axis.

Stated plainly rather than hidden: those 14 axes stay ungated. repo-mailbox's two
were 6 and 251 against a true 8 and 374 (fixed in e9054f8).

Parsing is measured against the real corpus: shields' `--` literal-hyphen escape,
`_`/`%20` spaces, zero as a real count, non-numeric badges (version/platform/
license) excluded, parenthetical asides read as their own axis ("5 skills (389
docs)"), doc/docs/references/reference_docs/knowledge_docs folded onto one axis,
and `N+` read as a lower bound.

Only the catalog's config-audit number changed; the plugin badge is the source.
Tests 106 -> 117 (+11). Gate green at 11 OK / 0 WARN / 0 ERROR.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RDSiMcgLMpEETwtkc86Nym

README.md

@@ -47,7 +47,7 @@ Configuration intelligence for Claude Code. Claude reads instructions from 7+ fi
 
 Key commands: `/config-audit posture`, `/config-audit feature-gap`, `/config-audit fix`, `/config-audit whats-active`, `/config-audit tokens`
 
-7 agents · 16 scanners · 21 commands · 1410 tests · [Full documentation →](https://git.fromaitochitta.com/open/config-audit)
+7 agents · 16 scanners · 21 commands · 1441 tests · [Full documentation →](https://git.fromaitochitta.com/open/config-audit)
 
 ---