Skill: System status

Use this when the user asks "what's installed?", "what's running?", "show status", or anything similar.

1. Call system_info for version, paths, distributed flag, loaded models, installed backends.
2. Call list_installed_models (no capability filter) for the full installed-model inventory.
3. If system_info.distributed is true, also call list_nodes and report worker health.
4. Present a concise summary:
   • Version & mode (distributed: true|false)
   • Installed models (count + list, each with name and capabilities)
   • Installed backends (count + list)
   • Loaded right now (from loaded_models)
   • Workers (only when distributed)
5. Do not call mutating tools in this skill.