gt crew start beads and gt crew stop beads now default to --all
behavior when no crew names are specified, matching user expectations.
- crew start: accepts 0-1 args (rig only) and starts all crew
- crew stop: detects if single arg is a rig name vs crew name
- Updated help text with new examples
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>