Replace prompt-based slugifying with mnemonic-id package for generating
human-readable worktree names like "hungry-hippo". Names are generated
when the worktree toggle is enabled rather than derived from the prompt.
- Add worktree utility functions for git worktree management
- Fix stale closure issue in create-agent-modal causing worktreeName to not be sent
- Refactor create-agent-modal to use useCallback for all functions in proper order
- Add tilde path expansion before worktree creation to fix "Not in a git repository" error
- Add worktreeName parameter to create_agent_request WebSocket message
- Add debug logging for worktree creation flow
- Remove noisy logging (message chunk updates, session updates, agent update notifications)
The worktree feature allows creating isolated git worktrees for each agent,
enabling work on different branches simultaneously without conflicts.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
