refactor: restructure rpm repo path to distro/version/arch layout

Move from /var/www/rpm/mistralrs/fedora-43/x86_64/ to
/var/www/rpm/fedora/43/x86_64/ so the repo can host packages
from multiple projects under a conventional hierarchy.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

script/publish-repo.sh

@@ -2,7 +2,7 @@
 set -euo pipefail
 
 RPM_DIR="${1:?usage: $0 <rpm-directory>}"
-REMOTE_DIR="/var/www/rpm/mistralrs/fedora-43/x86_64"
+REMOTE_DIR="/var/www/rpm/fedora/43/x86_64"
 
 # sign each rpm with the imported gpg key
 for rpm in "${RPM_DIR}"/*.rpm; do

script/setup/nginx.sh

@@ -34,7 +34,7 @@ else
     echo "failed to create or observe gitea_ci user on ${nginx_host}"
     exit 1
 fi
-if ssh ${nginx_host} "sudo install --directory /var/www/rpm && sudo setfacl -R -m u:gitea_ci:rwx /var/www/rpm/ && sudo chcon -Rt httpd_sys_content_t /var/www/rpm/"; then
+if ssh ${nginx_host} "sudo install --directory --mode 0755 /var/www/rpm/fedora/43/x86_64 && sudo setfacl -R -m u:gitea_ci:rwx /var/www/rpm/ && sudo chcon -Rt httpd_sys_content_t /var/www/rpm/"; then
     echo "rpm repo directory created and permissions set on ${nginx_host}"
 else
     echo "failed to create rpm repo directory on ${nginx_host}"