Chart (Demo) — Lightweight Charts minimal sample

Minimal Lightweight Charts demonstration. This page renders synthetic OHLC data via TradingView's open-source Lightweight Charts library (~45 KB gzipped, Apache 2.0). NO real prices. NO broker API. NO order routing.

Honest scope: This chart displays deterministic random-walk DEMO data only — there is no live price feed. The page exists solely to demonstrate the analytical-layer architecture (Layer 1) sitting alongside the existing TV widget display-layer (Layer 0). It is NOT a trading platform.

Timeframe: Style: Data points:

Hover the chart to inspect OHLC values · pinch / drag / wheel to zoom and pan

What this is NOT

It is DEMO data (synthetic deterministic random walk seeded from a constant). NOT real market prices.
It does NOT fetch live prices from any broker, exchange, or data feed in this minimal sample.
It does NOT support placing orders. There is no broker connection. (FIEA / 金商法 line-safe.)
It does NOT provide investment advice. No buy/sell signals are displayed.

Technical notes

Library: tradingview/lightweight-charts (Apache 2.0, open-source)
Gzipped size: ~45 KB (one of the smallest financial-chart libraries available)
Performance: 50,000+ candles render smoothly at 60+ FPS (TradingView official benchmarks). Marker overlays remain comfortable to ~15,000 data points.
Data source: Synthetic random walk for this minimal sample. Future versions may add OANDA / Twelve Data / Alpha Vantage via WIC backend proxy (API keys never exposed to browser).
Architecture: Display layer (TradingView widget on Home) and analytical layer (this chart + future indicators) are physically separated — both can coexist without conflict. No data redistribution from TV widget.