- Fix beads.run() to always explicitly set BEADS_DIR based on the working
directory or explicit override
- This prevents inherited environment variables (e.g., from mayor session
with BEADS_DIR=/home/erik/gt/.beads) from causing prefix mismatch errors
when creating agent beads for rigs
- Update polecat manager to use NewWithBeadsDir for explicitness
- Add comprehensive test coverage for BEADS_DIR routing and validation
- Add SessionLister interface for deterministic orphan session testing
Root cause: When BEADS_DIR was set in the parent environment, all bd
commands used the town database (hq- prefix) instead of the rig database
(gt- prefix), causing "prefix mismatch: database uses 'hq' but you
specified 'gt'" errors during polecat spawn.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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