`prompt.ac/~<channel>` instead of `aesthetic.computer/prompt~channel%20<id>~!autorun`. The host redirects one to the other, so the phone still lands on the prompt holding the channel as its own word — that rule did not go away, it moved into lith/Caddyfile where the expansion happens. What it buys: 27 bytes with the scheme a camera needs, against 61 before. That is a version-2 symbol rather than version 4 — 25 modules instead of 33 — so every module is a third wider on the rock, which is the surface someone is actually holding a phone up to. It reads like an address now, too, which the old one never did. The size guard in the tests measures the URL a phone actually gets, `https://` included, so lengthening the address fails there rather than quietly costing a version.