chore: sync external skills

chore: sync external skills

feat: Update open-source-maintainer skill with improved structure

fix: Improve open-source-maintainer templates and auto-init

fix: Restructure skills to match official Claude Code plugin format

feat: Add open-source-maintainer skill + fix plugin structure docs

Merge pull request #4 from siraht/fix/plugin-installation-structure

fix: correct marketplace.json structure and add missing plugin.json files

fix: Marketplace namespace + compliance documentation

Add orchestration skill for multi-agent coordination

chore: sync external skills

Update gastown skill with expanded documentation

feat: Auto-bump versions when sync detects content changes

chore: sync external skills

fix: Remove duplicate syncConfig declaration