align backend auth patterns

backend/database/migrations/0001_01_01_000000_create_users_table.php

@@ -11,7 +11,7 @@ return new class extends Migration
         Schema::create('users', function (Blueprint $table): void {
             $table->id();
             $table->string('email')->unique();
-            $table->string('password');
+            $table->string('passwordHash');
         });
     }