Fix Homebridge update detection for Debian 13

Co-authored-by: MickLesk <[email protected]>

Author: Copilot

ct/homebridge.sh

@@ -23,7 +23,7 @@ function update_script() {
   header_info
   check_container_storage
   check_container_resources
-  if [[ ! -f /etc/apt/sources.list.d/homebridge.list ]]; then
+  if ! dpkg -s homebridge >/dev/null 2>&1; then
     msg_error "No ${APP} Installation Found!"
     exit
   fi