Hardware Changes:
- Replaced reverse polarity protection with 2x PFET toolhead switching (PB2/PA5 control)
- Added SS56 Schottky diode reverse polarity protection for DC/DC converter
- Updated current limit resistor to 5.1kΩ (~10.2A)
- Removed fan control circuitry and JST-XH connector
- Removed internal JST-XH USB port with fuse/protection
Documentation Updates:
- Updated both README files to reflect hardware changes
- Removed all fan control references and configurations
- Updated Klipper configuration examples
- Cleaned up pinout and connector assignments
- Updated technical specifications table
- Fixed table of contents and cross-references
