Clarify that this operation is for stale state recovery, not normal recycling:
- Recreate → RepairWorktree
- RecreateWithOptions → RepairWorktreeWithOptions
- Updated comments to explain this handles reconciliation when AllocateName
returns a name that already exists (stale state needing repair)
- Updated polecat_spawn.go output: Recreating → Repairing stale
- Updated gc command help text for consistency
The function is useful for atomic hook_bead setting during repair, so kept
rather than replacing with Remove + Add.
Fixes gt-l0lok
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>