L2 Terminal: full-screen SOTA order book depth map
Replaces the cramped 480px component with a full-screen
production-grade trading terminal:
DOM Ladder (25%):
- 40 price rows centered on mid
- Bid/ask volume bars with opacity scaling
- Floating mid price, volume text on both sides
Depth Heatmap (75%):
- Cumulative volume profile (filled gradient areas)
- Green bid fill, red ask fill
- Yellow dashed mid line with floating labels
- Price axis, volume scale, imbalance gauge
Trade Tape (30% bottom):
- Amber trade path with colored markers
- Sized dots (trade size proportional)
- Latest trade callout with direction
Header bar:
- Live connection indicator, mid, spread, imbalance
- Real-time trade count
Access: click L2 Depth Map button on main dashboard
Fullscreen overlay with close button, ESC to dismiss
ramseshk
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