fix(fileflows): use fileflows.com header for node version check

Replace GitHub API call (repo does not exist) with a HEAD request
to the fileflows.com download URL. The Content-Disposition header
contains the versioned filename, from which the release number is
parsed and compared against the local version file.

If the header is not available the node update proceeds unconditionally,
since the user explicitly invoked the update command.

ct/fileflows.sh

@@ -31,16 +31,16 @@ function update_script() {
     exit
   fi
 
-  RELEASE=$(curl -fsSL "https://api.github.com/repos/revenz/FileFlows/releases/latest" | jq -r '.tag_name' | sed 's/^v//')
   CURRENT=$(cat /opt/fileflows/version 2>/dev/null | tr -d '[:space:]')
+  # Extract latest version from the Content-Disposition header of the download URL
+  RELEASE=$(curl -fsI "https://fileflows.com/downloads/zip" 2>/dev/null \
+    | grep -i "content-disposition" \
+    | grep -oP '[\d]+\.[\d]+\.[\d]+\.[\d]+' \
+    | head -1)
 
   if systemctl is-enabled fileflows-node &>/dev/null && ! systemctl is-enabled fileflows &>/dev/null; then
     # Node-only installation: no local server API available
-    if [[ -z "$RELEASE" ]]; then
+    if [[ -n "$RELEASE" && "$CURRENT" == "$RELEASE" ]]; then
-      msg_error "Failed to retrieve latest ${APP} version"
-      exit
-    fi
-    if [[ "$CURRENT" == "$RELEASE" ]]; then
       msg_ok "No update required. ${APP} Node is already at v${CURRENT}"
       exit
     fi
@@ -59,7 +59,7 @@ function update_script() {
     msg_info "Starting Service"
     systemctl start fileflows-node
     msg_ok "Started Service"
-    msg_ok "Updated successfully to v${RELEASE}!"
+    msg_ok "Updated successfully!"
   else
     # Server installation: use the local API
     update_available=$(curl -fsSL -X 'GET' "http://localhost:19200/api/status/update-available" -H 'accept: application/json' | jq .UpdateAvailable)
@@ -79,7 +79,7 @@ function update_script() {
       msg_info "Starting Service"
       systemctl start fileflows*
       msg_ok "Started Service"
-      msg_ok "Updated successfully to v${RELEASE}!"
+      msg_ok "Updated successfully!"
     else
       msg_ok "No update required. ${APP} is already at latest version"
     fi