New /what-if route. Sticky form on the left (jurisdiction, strategy,
glide, NW seed, spending, savings, horizon, optional floor for
vpw_floor, MC paths) submits to POST /simulate; results panel renders
summary stats + the new FanChart.
FanChart component layers seven series:
- p10 invisible baseline (line, transparent)
- p10→p25 stacked area (low opacity)
- p25→p75 stacked area (IQR, mid opacity)
- p75→p90 stacked area (low opacity)
- p50 solid median line (drawn last, prominent)
- p10 + p90 dashed lines on top of the bands
Stacking deltas keeps the band fills clean — plotting raw quantiles
each as their own area would overlap badly. Reusable by scenario
detail in the next chunk (same ProjectionPoint[] shape).
5 tests pass (was 2). 470 KB gzipped (ECharts).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
First end-to-end view: ECharts stacked area of net worth by account
over the last 365 days, fed from GET /networth/history.
- NetWorthChart component with empty-state fallback
- Mocked ReactECharts in tests so they run without a DOM canvas
- Dashboard now: headline NW + history chart + per-account cards
Bundle grew to 467 KB gzipped — ECharts is heavy by design. Will
tree-shake via echarts/core imports once the chart surface stabilises.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Bare-minimum SPA that wires up to the FastAPI backend:
- Vite 6 + React 19 + TS strict, alias @/* to src/*
- Tailwind v4 via @tailwindcss/vite (no postcss)
- TanStack Query v5 with sane defaults (30s staleTime, no auto-refetch)
- React Router 7 for routing
- ECharts + Recharts available (charts land in Phase 1a)
- Vitest + @testing-library/react for tests
- Dev proxy /api → http://localhost:8080 (FastAPI)
Pages:
- Dashboard — pulls /networth, shows total + per-account cards.
No chart yet (Phase 1a). Empty/error states for "no data" cases
point users to the ingest CLI.
Header shows live API health (queue depth from /healthz). 274 KB JS
gzipped to 87 KB. typecheck + build pass.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
