NginxProxymanager: use better-sqlite3 (#11708)

* 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

* Update nginxproxymanager.json

* Remove disabled script error messages

Removed error messages related to OpenResty APT repository issues.

ct/nginxproxymanager.sh

@@ -28,12 +28,6 @@ function update_script() {
     exit
   fi
 
-  msg_error "This script is currently disabled due to an external issue with the OpenResty APT repository."
-  msg_error "The repository's GPG key uses SHA-1 signatures, which are no longer accepted by Debian as of February 1, 2026."
-  msg_error "The issue is tracked in openresty/openresty#1097"
-  msg_error "For more details, see: https://github.com/community-scripts/ProxmoxVE/issues/11406"
-  exit 1
-
   if [[ $(grep -E '^VERSION_ID=' /etc/os-release) == *"12"* ]]; then
     msg_error "Wrong Debian version detected!"
     msg_error "Please create a snapshot first. You must upgrade your LXC to Debian Trixie before updating. Visit: https://github.com/community-scripts/ProxmoxVE/discussions/7489"
@@ -145,15 +139,17 @@ 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"