The --naked flag (skip tmux session creation) was a vestige of an earlier
design requiring manual session management. With the current polecat
architecture where polecats are witness-managed, ephemeral, and self-deleting
after task completion, manual session management is no longer needed.
The flag also created invalid states (e.g., slinging to crew --naked left
them unreachable since crew require tmux sessions for communication).
Closes gt-xhn5s
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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