feat(gates): enforce metadata.version bumps on changed skills at pre-push

check-skill-version-bump fails a push when a skill directory changed
against its merge-base with main (tests/ excluded) without a strictly
higher metadata.version than main. New, renamed and deleted skills are
exempt; every plugin is covered. Recorded as a dated section in
ADR-0022 and documented in gates.md.

Patch-bumps the 17 skills that changed on this branch without a bump,
so the branch passes its own gate. Simplification audit finding 33.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

plugins/lint/.apm/skills/vale-config/SKILL.md

@@ -8,7 +8,7 @@ description: >
 
 metadata:
   category: lint
-  version: "0.1.2"
+  version: "0.1.3"
   source_keys:
     - context7-websites-vale-sh
     - house-vale-3-15-2-repro

plugins/lint/.apm/skills/vale-run/SKILL.md

@@ -6,7 +6,7 @@ description: >
   as in "lint the docs", "check prose style", or "why is CI failing on the docs
   check". Not setting up Vale config or styles -> `vale-config`.
 metadata:
-  version: "0.1.3"
+  version: "0.1.4"
   category: lint
   source_keys:
     - context7-websites-vale-sh