opengist: use create_backup/restore_backup instead of hand-rolled mv

ct/opengist.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
-source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/build.func)
+_CS_DEFAULT_URL="https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main"
+_cs_boot="${COMMUNITY_SCRIPTS_CORE_DIR:-$(dirname "${BASH_SOURCE[0]}")/../../core}/core/build.func"
+source "$_cs_boot" 2>/dev/null || source <(curl -fsSL "${COMMUNITY_SCRIPTS_CORE_URL:-https://raw.githubusercontent.com/community-scripts/core/main}/core/build.func")
 # Copyright (c) 2021-2026 community-scripts ORG
 # Author: Jonathan (jd-apprentice)
 # License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
@@ -33,15 +35,11 @@ function update_script() {
     systemctl stop opengist
     msg_ok "Stopped Service"
 
-    msg_info "Creating backup"
-    mv /opt/opengist /opt/opengist-backup
-    msg_ok "Backup created"
+    create_backup /opt/opengist/config.yml
 
-    fetch_and_deploy_gh_release "opengist" "thomiceli/opengist" "prebuild" "latest" "/opt/opengist" "opengist*linux-$(arch_resolve).tar.gz"
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "opengist" "thomiceli/opengist" "prebuild" "latest" "/opt/opengist" "opengist*linux-$(arch_resolve).tar.gz"
 
-    msg_info "Restoring Configuration"
-    mv /opt/opengist-backup/config.yml /opt/opengist/config.yml
-    msg_ok "Configuration Restored"
+    restore_backup
 
     msg_info "Starting Service"
     systemctl start opengist