The getCleanupStatus function in witness/handlers.go and crew removal
in cmd/crew_lifecycle.go were constructing agent bead IDs with hardcoded
"gt-" prefix. This failed for rigs that use a different prefix like "bd-".
Now uses beads.GetPrefixForRig to look up the correct prefix from
routes.jsonl, enabling support for the beads rig and any future rigs
with custom prefixes.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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