Major architecture decision: rigs are now pure container directories,
not git clones. This prevents agent confusion by ensuring each agent
has exactly one place to work (their own /rig/ clone).
Key changes:
- Rig root is NOT a git repo - just a container
- Rig-level .beads/ holds issues for all agents in that rig
- Agents use BEADS_DIR env var to point to rig's beads
- Refinery's clone is the authoritative "main branch" view
- Added design decisions #6 (rig as container) and #7 (BEADS_DIR)
See also: beads issue bd-411u for BEADS_DIR documentation.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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