ahoxus / log / contact / a0c400f3

commit a0c400f3 — 20261011z0235waw ahoxus.org pass: the root gets its ahoxus logo and a jao nav link, ~26 pages get the jao nav link, the broken previous-version links point at their real /log targets, /fupl reads as ahotml with headings+list+code, the 7square /world + /random links point at the app, and /dev gets its own PWA manifest (scope /dev/) separate from the root site manifest (scope /)