Support Factory Droid

[hungthai1401]

This PR adds install/uninstall commands for Factory Droid

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Note

Adds install-droid/uninstall-droid commands to integrate mgrep with Factory Droid by installing hooks/skill and updating settings; updates README and CLI wiring.

• CLI
  • Registers install-droid and uninstall-droid in src/index.ts.
• Factory Droid Integration (src/install/droid.ts)
  • Installs mgrep plugin assets: writes mgrep_watch.py and mgrep_watch_kill.py to ~/.factory/hooks/mgrep and SKILL.md to ~/.factory/skills/mgrep.
  • Merges hook config into ~/.factory/settings.json (enables enableHooks, allowBackgroundProcesses; adds SessionStart/SessionEnd commands) with deduping.
  • Uninstall removes hooks/skill and cleans related entries from settings.
  • Ensures authentication before install; validates Factory Droid directory and plugin assets.
• Docs
  • README: adds Factory Droid to supported agents and command table (mgrep install-droid).

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[joeldierkes]

Hey, I like the integration a lot!
I have the problem that droid is often not using the skill, has that happened to you before @hungthai1401 ?

[hungthai1401]

@joeldierkes I can use skills. I don't get issues with skills