feat(P02): Bread unit + Root Basket + Forge/Fold types
---ci---
project: oy
phase: 2
milestone: v0.1
status: execute
---/ci---
Phase 2 (Component 3: Bread & Root Basket) skeleton:
- x/bread: Bread unit scale (11 denominations: Grain to Earth, §4)
- x/forge: Forge/Fold types, Root Basket composition (§6)
- Root Basket: Treasuries 35%, IG corporate 25%, gold 20%, Bitcoin 10%, other RWA 10%
- Basket validation: sums to 100, no single asset >50%, no leverage/futures
- Forge errors: AssetNotSupported, StillActive, BelowMinimum, MirrorQuorumFailed
- 9 unit tests passing
- Lexicon compliant (fixed 'deposited' -> 'provided')
CIAgent
0131c0cbbb