- Add CableLabelData struct and RenderCable() producing 384x180 bitmap
- Cable template: HW ID, name, USB version/speed, wattage/test date
- IsCableDevice() detects cable records by name or AINotes heuristic
- T-04-07 mitigation applied: HWID format validated in RenderCable too
- All 5 cable tests pass (10 total in package)