Replaces the simple lending pool dashboard at /mortgage with the full
rfunds-online mortgage simulator. Models community-funded mortgages with
80+ tranches, variable terms, reinvestment loops, secondary markets,
and 5 visualization modes (Network, Flow, Grid, Lender calc, Borrower calc).
New files:
- mortgage-types.ts & mortgage-engine.ts (pure TS, copied verbatim)
- folk-mortgage-simulator.ts (1639-line web component, all views)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
