- Replace all hardcoded hex colors in chart components with CSS custom
properties (getCssVar helper), making charts respect theme changes
- Add scope="col" to all table headers (PositionsTable, OrdersTable,
BacktestingDashboard trade list)
- Connect form labels to inputs via htmlFor/id pairs (OrderForm,
BacktestingDashboard)
- Add role="alert" to validation error messages
- Add aria-label to cancel button, progressbar role to backtest progress
- Add WsManager.reconnect() method with backoff reset
- Add Reconnect button to StatusBar when WS disconnected
- Add shimmer skeleton loading states to CandlestickChart and PnLChart
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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