Rename Schunix to SchOS; the kernel becomes SchIFT

Removes the "-unix" element and with it any trademark exposure to The Open Group. The split follows the ecosystem layout: SchOS is the system, and the kernel has its own name. Kernel-identity strings are the only places that take SchIFT -- uname(2) sysname, /proc/version, and the two licence sentences that say "kernel" outright. That is what every Unix does here: `uname -s` on Linux reports the kernel, not the distribution. Everything a user reads as the product -- panic screen, boot menu, error prefixes, docs, LICENSE, NOTICE -- is SchOS. schunix.img is schos.img, the logo assets and the musl TLS patch are renamed, and __SCHUNIX__ is __SCHOS__ (the define and the patch that consumes it moved together). Two things the rename broke, both found by the bootcheck suite: - shmtest wrote "SCHUNIX-MMAP-OK" with a hardcoded length of 15 and compared it back by hand-counted offsets (m[3]=='U', m[14]=='K'). The shorter marker left the write running two bytes past the literal and the compare reading past the data, failing a file-backed mmap that was working correctly. Now written and compared through one constant with sizeof. - bootcheck asserted a 31-byte file after appending to "hello-from-schunix"; the shorter string makes it 29. Both are the same mistake: a string literal whose length is written out somewhere else. Full suite green -- base, Tty, Ps, Sock, Fb, Usb, Evdev.
2026-08-09 14:09:59 +02:00 · 2026-08-09 14:09:59 +02:00 · e04ca28812
commit e04ca28812
parent d0f7acf9eb
83 changed files with 520 additions and 601 deletions
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