feat: add cadCAD simulation, risk tranches, cross-chain, and conviction governance
- Add risk_tranching.py: Senior/Mezzanine/Junior tranche system with yield
waterfall, loss absorption, and liquidation mechanics
- Add conviction.py: Full conviction voting engine for parameter governance
(ported from conviction/ research repo)
- Add crosschain/hub_spoke.py: 5-chain hub-spoke simulation with CCIP messaging,
staking yield, and price shock modeling
- Add cadcad/ module: State definitions, 7 policy functions, 7 state update
functions, pre-built scenarios (normal growth, stress test, parameter sweep)
- Add 4 dashboard tabs: Cross-Chain map, Risk Tranches, Governance, cadCAD Sim
- Wire cadCAD 0.5.3 with pandas/networkx/seaborn as new dependencies
- All 350 existing tests still pass
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett
c48b7ae82a