crew_at.go and crew_lifecycle.go were not setting GT_ROLE when
starting crew sessions. This caused crew workers to inherit GT_ROLE
from the parent environment (often "mayor"), leading to incorrect
role detection.
Now properly exports GT_ROLE=crew along with GT_RIG, GT_CREW, and
BD_ACTOR when spawning Claude for crew workers.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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