Add runtime script status guard and deleted-script stubs.

Prevent disabled/deleted scripts from running updates with clear user messages, and ensure deleted ct scripts are stubbed automatically so legacy update commands no longer fail with 404.

ct/booklore.sh

@@ -11,5 +11,5 @@ color
 
 msg_error "This script is no longer available in community-scripts."
 msg_error "The Booklore or the Grimmory Fork will for now not return to community-scripts. Due to the unstable nature of these projects we decided to remove them and will decide at later point if they come back, which will most likley not happen. Plese do not create Issues for this."
-msg_info "More info: https://community-scripts.org/scripts/booklore"
+msg_warn "More info: https://community-scripts.org/scripts/booklore"
 exit 1

ct/ente.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/build.func)
+# Copyright (c) 2021-2026 community-scripts ORG
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+
+APP="Ente"
+
+header_info "$APP"
+variables
+color
+
+msg_error "This script is no longer available in community-scripts."
+msg_error "This script was removed and cannot be installed or updated."
+msg_info "More info: https://community-scripts.org/scripts/ente"
+exit 1