docs(book): Add core textbook chapters covering OVSM and algorithmic trading

Complete Phase 1 of comprehensive OVSM algorithmic trading textbook with
13 graduate-level chapters totaling 65,400 words.

Language Fundamentals (Chapters 1-3):
- Introduction to algorithmic trading and market evolution
- Domain-specific languages for financial computing
- Complete OVSM language specification with formal grammar

Trading Strategies (Chapters 11-20):
- Statistical arbitrage and pairs trading with cointegration theory
- Options pricing and volatility surface trading
- AI sentiment analysis and ML price prediction
- DeFi strategies: MEV extraction, flash loans, liquidity provision
- Memecoin momentum and whale tracking strategies

Each chapter includes:
- Historical context and economic foundations
- Mathematical derivations with worked examples
- Working OVSM code implementations
- Risk analysis and failure modes
- Academic citations (60+ unique references)
- Graduate-level rigor suitable for MFE/MQF programs

Supporting materials:
- 110-chapter index with detailed descriptions
- 134-entry academic bibliography
- Complete OVSM function reference

fix(research): Improve wallet analysis pagination efficiency
- Increase batch size to 1000 txs (from 100) for faster analysis
- Rename 'before' to 'before_sig' for clarity

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: 0xrinegade