docs: order book microstructure study — 12 sections, 13 assets
Comprehensive OB study compiled from live Binance/BingX data + academic
literature (Bouchaud, Cont/Stoikov, Cartea/Jaimungal):
1. Depth power-law decay: D(d) = A * d^(1-alpha), per-asset params
2. Spread profiles: normal + stress multipliers for all 13 assets
3. Order flow: arrival rates, cancel/fill ratios, size distributions
4. Market maker behavior: inventory limits, pull speed, margins
5. Volatility regimes: GARCH params, half-lives, crisis multipliers
6. Intraday patterns: peak/trough hours, session analysis
7. Cross-asset correlations: normal vs crash behavior
8. BingX-specific: spread/depth/latency/fees vs Binance ratios
9. Book fragility & cascade dynamics: flash crash anatomy
10. Retail vs institutional composition
11. Funding rates: per-asset means, std, positive%
12. Expected slippage model
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