Auto-Update Plugins Skill

Overview

This skill solves the multi-repo plugin sync problem using a GitHub-native pull model:

• Consumer projects declare what GitHub repos they subscribe to via plugin-sources.json.
• On every agent session start, a SessionStart hook fires check_and_sync.py, which detects upstream changes and re-runs plugin_add.py automatically.
• No local clone of agent-plugins-skills required — plugin_add.py clones into a temp directory, installs, and cleans up automatically.

GitHub (richfrem/agent-plugins-skills)
        ↓  plugin_add.py <owner/repo> --all -y
  consumer-project/.agents/   ← skills + agents + commands + hooks