Given a monthly payment budget, shows max borrowable amount across different tier
mixes (blended, all-single-tier, short-heavy, long-heavy). Expandable breakdown
with per-tier allocation table, stacked bar, and interest comparison. Also fixes
pre-existing PaymentFlow.tsx type error from merge.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add full mortgage simulation engine with distributed tranches across 5 lending tiers
(2yr/5yr/10yr/15yr/30yr), reinvestment mechanics, secondary market transfers, and
overpayment routing. Includes four visualization modes: mycelial network, Sankey flow,
lender grid, and lender return calculator comparing monthly liquidity vs reinvest-to-term
strategies. Tranches can be partially funded (open slots visible in all views).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett