fix(nginxproxymanager): update for better-sqlite3 and setup wizard

NPM switched to better-sqlite3 as the knex database client.
The old sqlite3 client causes 'Internal Error' on user creation.

- Update production.json in install/update to use better-sqlite3
- Add sed patch in update script to fix existing production.json
- Add useNullAsDefault: true to match upstream knex config
- Remove default credentials from JSON (NPM now uses setup wizard)
- Add note about setup wizard for first-time users

Ref: NginxProxyManager/nginx-proxy-manager@0b2fa82
Closes #11681

ct/nginxproxymanager.sh

@@ -145,15 +145,17 @@ function update_script() {
   "database": {
     "engine": "knex-native",
     "knex": {
-      "client": "sqlite3",
+      "client": "better-sqlite3",
       "connection": {
         "filename": "/data/database.sqlite"
-      }
+      },
+      "useNullAsDefault": true
     }
   }
 }
 EOF
   fi
+  sed -i 's/"client": "sqlite3"/"client": "better-sqlite3"/' /app/config/production.json
   cd /app 
   $STD yarn install --network-timeout 600000
   msg_ok "Initialized Backend"

frontend/public/json/nginxproxymanager.json

@@ -30,10 +30,14 @@
     }
   ],
   "default_credentials": {
-    "username": "admin@example.com",
-    "password": "changeme"
+    "username": null,
+    "password": null
   },
   "notes": [
+    {
+      "text": "On first launch, a setup wizard will guide you through creating an admin account. There are no default credentials.",
+      "type": "warning"
+    },
     {
       "text": "You can install the specific one certbot you prefer, or you can Running /app/scripts/install-certbot-plugins within the Nginx Proxy Manager (NPM) LXC shell will install many common plugins. Important: This script does not install all Certbot plugins, as some require additional, external system dependencies (like specific packages for certain DNS providers). These external dependencies must be manually installed within the LXC container before you can successfully install and use the corresponding Certbot plugin. Consult the plugin's documentation for required packages.",
       "type": "info"

install/nginxproxymanager-install.sh

@@ -130,10 +130,11 @@ if [ ! -f /app/config/production.json ]; then
   "database": {
     "engine": "knex-native",
     "knex": {
-      "client": "sqlite3",
+      "client": "better-sqlite3",
       "connection": {
         "filename": "/data/database.sqlite"
-      }
+      },
+      "useNullAsDefault": true
     }
   }
 }