chore(plugins): sync generated content mirrors

Regenerate plugins/*/skills/ from plugins/*/.apm/ after the previous
four commits, via scripts/sync-plugin-content.sh --all. The mirror is
generated output (ADR-0017) that check-plugin-content-sync's pre-push
hook diffs against .apm/; nothing here is hand-edited.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EeH8SCbcrCAQrtymkNuhKP

plugins/bin/skills/caveman/SKILL.md

@@ -4,6 +4,8 @@ disable-model-invocation: true
 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"
 ---
 
 Respond terse like smart caveman. All technical substance stay. Only fluff die.