Allows slinging multiple beads in a single command:
gt sling gt-abc gt-def gt-ghi gastown
Each bead gets its own freshly spawned polecat. This parallelizes
work dispatch without running gt sling N times manually.
Changes:
- Updated Args from RangeArgs(1,2) to MinimumNArgs(1)
- Added batch mode detection when len(args)>2 and last arg is a rig
- Added runBatchSling() to handle multiple beads with progress tracking
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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