Migrate update script to Seerr; prompt rerun

Update ct/jellyseerr.sh and ct/overseerr.sh to switch the container update handler to the Seerr script. The here-doc now uses a single-quoted EOF to avoid shell expansion and includes an explicit shebang for the generated /usr/bin/update. Instead of auto-executing the new update script, the code now informs the user to run 'update' again and exits (overseerr exits with 0). Also includes minor whitespace cleanup (removed trailing spaces on cd lines). This prevents unexpected immediate execution and ensures the generated script runs with the intended shell.

CHANGELOG.md

@@ -406,12 +406,6 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
 ## 2026-02-16
 
-### 🚀 Updated Scripts
-
-  - #### 🐞 Bug Fixes
-
-    - jellyseerr/overseerr: Migrate update script to Seerr; prompt rerun [@MickLesk](https://github.com/MickLesk) ([#11965](https://github.com/community-scripts/ProxmoxVE/pull/11965))
-
 ## 2026-02-15
 
 ### 🆕 New Scripts

ct/zabbix.sh

@@ -35,18 +35,15 @@ function update_script() {
     exit
   fi
 
-  if systemctl cat zabbix-agent2.service &>/dev/null; then
+  if systemctl list-unit-files | grep -q zabbix-agent2.service; then
     AGENT_SERVICE="zabbix-agent2"
-  elif systemctl cat zabbix-agent.service &>/dev/null; then
-    AGENT_SERVICE="zabbix-agent"
   else
-    AGENT_SERVICE=""
-    msg_warn "No Zabbix Agent service found, skipping agent actions"
+    AGENT_SERVICE="zabbix-agent"
   fi
 
   msg_info "Stopping Services"
   systemctl stop zabbix-server
-  [[ -n "$AGENT_SERVICE" ]] && systemctl stop "$AGENT_SERVICE"
+  systemctl stop "$AGENT_SERVICE"
   msg_ok "Stopped Services"
 
   read -rp "Choose Zabbix version [1] 7.0 LTS  [2] 7.4 (Latest Stable)  [3] Latest available (default: 2): " ZABBIX_CHOICE
@@ -86,13 +83,13 @@ function update_script() {
 
   $STD apt install --only-upgrade zabbix-server-pgsql zabbix-frontend-php php8.4-pgsql
 
-  if [[ "$AGENT_SERVICE" == "zabbix-agent2" ]]; then
+  if [ "$AGENT_SERVICE" = "zabbix-agent2" ]; then
     $STD apt install --only-upgrade zabbix-agent2 zabbix-agent2-plugin-postgresql
     if [ -f /etc/zabbix/zabbix_agent2.d/plugins.d/nvidia.conf ]; then
       sed -i 's|^Plugins.NVIDIA.System.Path=.*|# Plugins.NVIDIA.System.Path=/usr/libexec/zabbix/zabbix-agent2-plugin-nvidia-gpu|' \
         /etc/zabbix/zabbix_agent2.d/plugins.d/nvidia.conf
     fi
-  elif [[ "$AGENT_SERVICE" == "zabbix-agent" ]]; then
+  else
     $STD apt install --only-upgrade zabbix-agent
   fi
 
@@ -108,7 +105,7 @@ function update_script() {
 
   msg_info "Starting Services"
   systemctl start zabbix-server
-  [[ -n "$AGENT_SERVICE" ]] && systemctl start "$AGENT_SERVICE"
+  systemctl start "$AGENT_SERVICE"
   systemctl restart apache2
   msg_ok "Started Services"
   msg_ok "Updated successfully!"