New affinity.rs module renders a toggleable CPU grid dialog:
- Space toggles selected CPU on/off
- Arrow keys navigate the grid
- Enter applies via sched_setaffinity(2)
- Auto-closes 2s after successful apply
- Shows +N for enabled, -N for disabled CPUs
- Grid adapts to CPU count (4/8/16 columns)
Added set_affinity() to process.rs using libc::sched_setaffinity.
Added 'a' key to keybar and help text.
vasilito
a93e9807f0