Menu Presentation Rules

When the user triggers this skill (via /squad slash command, "squad commands", "help", "what can squad do", etc.):

Category-level menu first. Present category names as an ask_user choice list:

📋 Squad Commands — pick a category:
1. Install & Upgrade
2. Team Management
3. Issues & PRs
4. Plugins & Skills
5. Model & Cost
6. Sessions & State

Drill-down. After selection, show operation titles in that category as a second ask_user list.
Direct match skips the menu. If the user says "how do I upgrade with state backend," match to the specific entry and go straight to argument collection.
Compact fallback. If ask_user is unavailable, render as a markdown table instead.
Back / Cancel. Include "← Back to categories" in sub-menus. Include "Cancel" in confirmation prompts. Respect "never mind" / "cancel" at any point.