The punktfunk-web unit serves HTTP/1.1 over TLS with the host's own
self-signed identity cert, but several guides still told users to open
http://<host>:47992, which fails. Correct the scheme everywhere and note
the one-time browser cert warning in the canonical + SteamOS docs.
The RPM %post web hint was doubly wrong (http://<host-ip>:3000): wrong
scheme and wrong port — the service listens on :47992, not the :3000 dev
default. Also fixes scripts/web-init.sh, so the URL the SteamOS/Linux
installer prints at the end of setup is correct too.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>