The market chart was hardwired to CoinGecko's cross-exchange USD aggregate
(vs_currency=usd), so selecting a trading pair only changed the "Trade" link —
never the chart or price. Now the SELECTED exchange drives both.
CoinGecko gives us which venues list DRGX (the ticker `market.identifier`) but
not their APIs, so add data/exchange_candles.h: a hand-maintained map from that
identifier to each venue's public candle endpoint, with two adapters verified
against the live APIs — Ourbit (MEXC-style /api/v3/klines, array format) and
NonKYC (TradingView-UDF /market/candles, `bars`). Unmapped venues return no URL,
so the chart falls back to the CoinGecko aggregate and nothing regresses.
- App::refreshExchangeChart() resolves the selected pair, fetches its intraday
(5-min) + daily candles via the TLS-verified httpGetString on the worker, and
stores them on MarketInfo (exchange_chart_intraday/daily + exchange_chart_active).
Re-fetches on pair change; self-throttled to ~30 min otherwise; falls back to
aggregate on any failure.
- chartSeries() draws the per-exchange series when active (portfolio sparklines
stay on the aggregate). The hero shows the selected venue's real price
(converted_last) — Ourbit vs NonKYC differ ~7%. parseCoinGeckoTickers now
captures the identifier + per-exchange USD price (previously discarded).
Adapters unit-tested against real captured responses (URL builder + both parsers
+ the chartSeries switch) and validated against the full live feeds (Ourbit 20d,
NonKYC 370d, ascending, correct closes). Build + ctest + hygiene green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
DanS
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