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/git/skills/pc-author/SKILL.md

@@ -6,6 +6,7 @@ description: >
   shellcheck"). Not running, installing, or updating hooks -> `pc-run`.
 allowed-tools: Bash Read Write Edit
 metadata:
+  version: "1.0.0"
   category: devtools
   source_keys:
     - context7-pre-commit-com