Fix typo in core math module filename and update all references.
Changes:
- Renamed market_trade/core/CoreTraidMath.py → CoreTradeMath.py
- Updated 28 import references across 14 files:
- All Ind_*.py indicator modules
- indicators.py, indicators_v2.py
- signals.py, signals_v2.py
- CoreDraw.py
- Updated documentation references in CLAUDE.md
This eliminates the "Traid" typo and aligns with proper English spelling.
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Co-Authored-By: Claude <noreply@anthropic.com>