The packaging page describes the implemented unixnu release command, its
board.toml keys, the outputs and the checks verify makes. The arm64e page states
that arm64e needs native PAC hardware, that iPadOS 18 is the last version that
supports arm64, recommends PAC devices and the iOS or iPadOS 27 profile, and
states that every driver and optimization must work for 17 and 27 with the
build target as the only difference.
Add English and Simplified Chinese documentation under docs/, covering the boot chain, build, boot, debugging, porting, drivers, XNU 4 KiB pages, macOS and device notes. Add the Pages workflow and CNAME. Rename the boot manager from CrabApple to UniXNU across the package, symbols, paths, configuration file and logs. Update README with the documentation badge and CONTRIBUTING link.