refactor(wireguard): inline the host-conflict guard, drop central allowed_install

dockerCheckAllowedInstall was a one-app `case` whose only active caller was the
wireguard app itself — so inline its check (abort if a host WireGuard exists at
/etc/wireguard/params, which would collide on the wg kernel module + UDP 51820)
directly into containers/wireguard/wireguard.sh and delete
scripts/docker/app/checks/allowed_install.sh.

The protection is unchanged; wireguard is now fully self-contained and the last
app name leaves central install code. Regenerated arrays. (The only remaining
dockerCheckAllowedInstall references are in scripts/unused/ — retired apps,
never sourced.)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: librelad <librelad@digitalangels.vip>

containers/wireguard/wireguard.sh

@@ -37,7 +37,15 @@ installWireguard()
         echo "---- $menu_number. Checking if $app_name can be installed."
         echo ""
 
-        dockerCheckAllowedInstall "$app_name" || return 1
+        # Host-conflict guard: a host-level WireGuard (e.g. the angristan
+        # wireguard-install script — marker /etc/wireguard/params) collides with
+        # this container on the wg kernel module + UDP 51820. Abort if present.
+        if [[ -e /etc/wireguard/params ]]; then
+            isError "WireGuard is already installed on the host — this conflicts with the $app_name app."
+            isError "Installation is now aborting..."
+            dockerUninstallApp "$app_name"
+            return 1
+        fi
 
 		((menu_number++))
         echo ""

scripts/docker/app/checks/allowed_install.sh

@@ -1,39 +0,0 @@
-#!/bin/bash
-
-dockerCheckAllowedInstall() 
-{
-    local app_name="$1"
-
-    #if [ "$status" == "installed" ]; then
-    #elif [ "$status" == "running" ]; then
-    #elif [ "$status" == "not_installed" ]; then
-    #elif [ "$status" == "invalid_flag" ]; then
-
-    case "$app_name" in
-        "wireguard")
-            # Check if WireGuard is already installed and load params
-            if [[ -e /etc/wireguard/params ]]; then
-                isError "WireGuard is installed, this will conflict with $app_name."
-                isError "Installation is now aborting..."
-                dockerUninstallApp "$app_name"
-                return 1
-            fi
-            ;;
-        #"mailcow")
-            #local status=$(dockerCheckAppInstalled "webmin" "linux" "check_active")
-            #if [ "$status" == "installed" ]; then
-                #isError "Virtualmin is installed, this will conflict with $app_name."
-                #isError "Installation is now aborting..."
-                #dockerUninstallApp "$app_name"
-                
-            #elif [ "$status" == "running" ]; then
-                #isError "Virtualmin is installed, this will conflict with $app_name."
-                #isError "Installation is now aborting..."
-                #dockerUninstallApp "$app_name"
-                
-            #fi
-            #;;
-    esac
-
-    isSuccessful "Application is allowed to be installed."
-}

scripts/source/files/arrays/files_docker.sh

@@ -4,7 +4,6 @@
 # Do not edit manually - run './scripts/source/files/generate_arrays.sh run' to regenerate
 
 docker_scripts=(
-    "docker/app/checks/allowed_install.sh"
     "docker/app/checks/app_installed.sh"
     "docker/app/checks/container_health_loop.sh"
     "docker/app/checks/container_health.sh"