- Remove android:background from C64DisplayView: SurfaceView's XML
background painted over the surface, hiding all rendered content
- Fix pixel byte order: copyPixelsFromBuffer reads [R,G,B,A] bytes, so
physical colors must be packed as ABGR (not ARGB) to avoid R/B swap
- Fix six wrong C64 keyboard matrix positions (1, 2, Q, E, R, Y) taken
from the authoritative VICE hardware matrix table
ml