Implement TradeValidator (src/trading/TradeValidator.ts)

[tldrwtf]

Description

Core trading validation including rate validation, limits, blacklist checks, and gem calculations.

Tasks

• [ ] Implement rate validation against config
• [ ] Trade limits enforcement
• [ ] Blacklist checks
• [ ] Gem calculations and validation
• [ ] Provide validateTrade() method

Files to Modify

• src/trading/TradeValidator.ts

Dependencies

• src/config/index.ts (Issue #14)

Priority

P0 - Critical path

Size

L (8-16 hours)

Phase

Phase 5 - Trading Logic

Parent Issue

#11