- Changed numeric fields from typed as number to 'any' in raw query results
- Properly convert Prisma Decimal/BigInt types to JavaScript numbers
- Fixes TypeError: e.totalPnL.toFixed is not a function
- All numeric values (totalPnL, avgPnL, avgADX, etc.) now converted with Number()
Issue: Prisma returns Decimal objects from aggregation queries which don't have
toFixed() method. Frontend expects plain numbers for .toFixed(2) formatting.
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