chore: point homepage at the org wiki

The Cargo homepage feeds Plugin::URL, which hosts can show to users, so a
LAN-only Gitea address was the wrong value there. wiki.novoyuuparosk.org
is still a placeholder, but a reachable one.

The Gitea URL is deliberately not added to STALE even though it was
retired as the homepage: it remains the correct clone URL and appears in
the README as one. A value can be retired from one role while staying
current in another, and STALE is about spellings nobody should use rather
than values that moved fields. The checker flagged it and this is the
resolution, matching how codename-206 exempts its own repo name.

Also finishes turning the template's README into this plugin's. The
scaffold left a Quick Start telling the reader to clone the template, and
a `sh check-branding.sh` path that has since moved under tools/. The full
branding rationale stays in the template; this repo keeps a pointer and
the facts specific to it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WHt4DykxXaQnyaJfyS8KCn

tools/branding.conf

@@ -30,7 +30,7 @@ EMAIL="mikkeli@novoyuuparosk.org"
 # an org ships the plugin, a person authored it. Defaults to VENDOR when the two
 # are the same, which is the common case for a one-person project.
 AUTHOR="Mikkeli Matlock"
-HOMEPAGE="http://192.168.2.199:3005/musiikki/kolmekivi"
+HOMEPAGE="https://wiki.novoyuuparosk.org"
 DESCRIPTION="A stereo delay/echo plugin built with NIH-plug"
 
 # What the plugin does *now*. No codename, no "prototype", no "v2 rewrite" -