- Correct "Managing Worktrees" section UI descriptions:
- Branch icon is GitBranch, not a green checkmark
- Collapse/expand is via worktree count band, not a chevron on parent
- Describe drawer styling with accent background
- Improve "Creating a Worktree Sub-Agent" section:
- Document both access methods (header hover and context menu)
- Rename "Watch for Changes" to "Watch for new worktrees"
- Add note about quick creation via context menu
- Add missing "Duplicate..." action to Worktree Actions table
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