Introducing the Setup Wizard for creating the first user

- no longer setup a default
- still able to do that with env vars however

backend/biome.json

@@ -1,5 +1,5 @@
 {
-    "$schema": "https://biomejs.dev/schemas/2.2.0/schema.json",
+    "$schema": "https://biomejs.dev/schemas/2.2.3/schema.json",
     "vcs": {
         "enabled": true,
         "clientKind": "git",