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/bin/.apm/skills/caveman/SKILL.md

@@ -5,7 +5,7 @@ description: >
   Ultra-compressed output mode that drops articles, filler and pleasantries while
   keeping technical substance exact, cutting token usage by roughly 75%.
 metadata:
-  version: "1.0.0"
+  version: "1.0.1"
 ---
 
 Respond terse like smart caveman. All technical substance stay. Only fluff die.

plugins/bin/.apm/skills/grill-me/SKILL.md

@@ -6,7 +6,7 @@ description: >
   decision tree. Not a plan to challenge against `CONTEXT.md` and ADRs ->
   `grill-with-docs`.
 metadata:
-  version: "1.0.0"
+  version: "1.0.1"
 ---
 
 Interview me relentlessly about every aspect of this plan until we reach a shared understanding. Walk down each branch of the design tree, resolving dependencies between decisions one-by-one. For each question, provide your recommended answer.

plugins/bin/.apm/skills/grill-with-docs/SKILL.md

@@ -5,7 +5,7 @@ description: >
   the interview challenges terms against `CONTEXT.md` and writes decisions into
   it and into ADRs as they land. Not a plain interview -> `grill-me`.
 metadata:
-  version: "1.0.0"
+  version: "1.0.1"
 ---
 
 <what-to-do>

plugins/bin/.apm/skills/prototype/SKILL.md

@@ -6,7 +6,7 @@ description: >
   variations. Not production code -> `tdd`. Not talking a design through ->
   `grill-me`.
 metadata:
-  version: "1.0.0"
+  version: "1.0.1"
 ---
 
 # Prototype

plugins/bin/.apm/skills/research/SKILL.md

@@ -6,7 +6,7 @@ description: >-
   documentation written from existing code or specs -> `write-docs`. Not a bug
   or incident -> `diagnose`.
 metadata:
-  version: "1.0.0"
+  version: "1.0.1"
   category: research
 allowed-tools:
   - Grep

plugins/bin/.apm/skills/write-docs/SKILL.md

@@ -9,7 +9,7 @@ description: >
 updated: 2026-05-17
 when: invoked by explicit trigger ("write docs for X", "document this module", "create docs for this feature") or implicit request to produce technical documentation from code or spec
 metadata:
-  version: "1.0.0"
+  version: "1.0.1"
   category: implement
 source:
   - repo: anthropics/skills