ui: 3x3 button grid layout

fix: download progress spam + disable buttons during proot commands

fix: add missing ProotExecutor import

fix: align proot env exactly with AIOPE

feat: add Update, Fix dpkg, and Cancel buttons

fix: bump rootfs version to v2 to force re-extract

fix: dpkg error 100 in proot

feat: add manual Connect Shizuku button

fix: use Shizuku sticky binder listener for reliable detection

security: bind server to 127.0.0.1 only

fix: request Shizuku permission on launch

ci: add build workflow, arm64-only, align bootstrap with AIOPE

restore /dev/stdin binds for dpkg scripts, filter proot warnings from output

remove /dev/stdin binds — /dev/fd already covers this, avoids proot warnings

clean: suppress /dev/stdin bind warnings in non-interactive mode