nginx: include lethepowerflux.com → rf-flux.com 301 redirect

The VPS already had a server block redirecting lethepowerflux.com and
www.lethepowerflux.com to https://www.rf-flux.com, but it lived only on
the live config — not in git. That's why the latest pull complained
about local changes that would be overwritten.

Adding it here so the repo is the single source of truth for the Nginx
config again. Behaviour is unchanged on the VPS (redirect was already
in place) — this commit just lets future git pulls flow without
manual intervention.

nginx/conf.d/flux.conf

@@ -6,6 +6,15 @@ upstream nextjs {
     keepalive 32;
 }
 
+# Legacy domain redirect — anyone landing on lethepowerflux.com lands on
+# the canonical https://www.rf-flux.com host instead. SEO-safe 301.
+server {
+    listen 80;
+    server_name lethepowerflux.com www.lethepowerflux.com;
+
+    return 301 https://www.rf-flux.com$request_uri;
+}
+
 server {
     listen 80;
     server_name rf-flux.com www.rf-flux.com;