Epic Worktree support

[mwarger]

Problem / Use case

I would like for there to be an option via flag or config value for running ralph tui on an epic for it to automatically create a work tree.

Proposed solution

ralph-tui --epic abc-123 --worktree

the worktree could automatically be named repo_name_abc-123 or something similar.

Alternatives considered

I've sometimes just made a work tree manually, but it would be better if this could do it for me.

Additional context

No response

[subsy]

@mwarger interesting so you want a new worktree for serial execution? (we already create per-worker worktrees) in parallel execution mode.

[mwarger]

@subsy

I saw the work tree instantiation for parallel beads, but what I'm talking about is to have a work tree for an epic so that I could start epics independently without them clashing. This is obviously doable manually, but it would be neat if you could just start a run with Ralph Tui and have it put everything in a work tree. I suppose this could also work alongside the parallel execution flow.