Group-structure tests for Phase 1 permissions overhaul. Covers:
- All 7 new res.groups records present (8th role "No" is implicit)
- Owner transitively implies base.group_system + every old group
- Manager forms the diamond (implies both Shop Manager and Sales Manager)
- Sales and Shop branches remain orthogonal at the leaf (Tech != Sales Rep)
- uid 1/2 auto-assigned to Owner
- Sequence numbers unique (renders dropdown predictably)
- New groups imply old for backward-compat (30-day rollback safety)
- Cross-module backward-compat chain works (e.g., Owner -> CGP DO)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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