massive improvements to tests, streamlined and synced migrations, fixed a lot of wrong or old table field references. implemented a lot of pages in react for website frontend

app/Models/User.php

@@ -56,6 +56,31 @@ class User extends Authenticatable implements MustVerifyEmail
         ];
     }
 
+    /**
+     * Retrieve the user by the given credentials.
+     */
+    public function retrieveByCredentials(array $credentials)
+    {
+        if ($this->getProvider()->hasTable($this->getTable())) {
+            return $this->newModelQuery()
+                ->where(function ($query) use ($credentials) {
+                    // Handle 'login' field for email or username
+                    if (isset($credentials['login'])) {
+                        $login = $credentials['login'];
+                        $query->where('email', $login)
+                              ->orWhere('username', $login);
+                    } else {
+                        foreach ($this->getAuthIdentifiers() as $key => $value) {
+                            $query->where($key, $value);
+                        }
+                    }
+                })
+                ->first();
+        }
+
+        return null;
+    }
+
     protected function fullName(): Attribute
     {
         return Attribute::make(