- Add streams_nerf to modern osu module for RX mode
- Detects stream-heavy maps via aim/speed difficult strain count ratio
- Applies accuracy-based penalty to aim PP when ratio < 1.09
- Deprecate osu_2019 module (modern osu module now supports RX/AP)
- Add tests for RX/AP PP calculation
Co-Authored-By: Claude Opus 4.5 <[email protected]>