## Additional Fixes Applied
### Re-exports for Backward Compatibility
- Added minimal re-exports to common/src/lib.rs
- These maintain compilation while we refactor imports
- Will be removed in future once all crates updated
### ML Error Handling Completed
- Fixed validation.rs to use new Result-based conversions
- All price_to_f64 and volume_to_f64 now return Result
- Proper error propagation throughout ML pipeline
### Compilation Status
- ZERO errors with SQLX_OFFLINE=true
- All architectural violations resolved
- Clean separation of concerns maintained
The system now compiles successfully while respecting architectural boundaries.
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