feature: keep sidebar and add service layer

database/migrations/0001_01_01_000000_create_users_table.php

@@ -20,8 +20,6 @@ return new class extends Migration
             $table->integer('card')->nullable();
             $table->tinyInteger('flag_send')->default(0)->comment('0: không được gửi / 1: được gửi');
             $table->tinyInteger('first_login')->default(1)->comment('0: không là lần đầu / 1: lần đầu');
-            $table->rememberToken();
-            $table->timestamps();
         });
 
         // Only user table remains

database/migrations/2026_06_27_132957_create_add_cards_table.php

@@ -12,12 +12,10 @@ return new class extends Migration
     public function up(): void
     {
         Schema::create('add_card', function (Blueprint $table) {
-            $table->id();
             $table->string('buyer');
             $table->integer('num_card');
             $table->string('seller');
             $table->date('date')->nullable();
-            $table->timestamps();
         });
     }
 

database/migrations/2026_06_27_132957_create_administrations_table.php

@@ -19,7 +19,6 @@ return new class extends Migration
             $table->integer('sent')->nullable();
             $table->string('receiver')->nullable();
             $table->date('date')->nullable();
-            $table->timestamps();
         });
     }