Detailing fungsi semua modul dari bugs error

database/migrations/2026_06_04_195507_create_exams_table.php

@@ -0,0 +1,40 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up()
+    {
+        Schema::create('exams', function (Blueprint $table) {
+            $table->id();
+            $table->string('title');
+            $table->text('description')->nullable();
+            
+            // Mengakomodasi 3 jenis training sesuai permintaan Anda
+            $table->enum('training_type', ['matrix_plant', 'product', 'external']);
+            
+            // Relasi ke Materi/Subject (Satu ujian bisa mewakili satu materi SOP)
+            $table->foreignId('subject_id')->constrained()->onDelete('cascade');
+            
+            // Aturan CBT
+            $table->integer('duration_minutes')->default(60); // Durasi ujian
+            $table->integer('passing_grade')->default(80);    // Nilai standar kelulusan
+            $table->integer('max_retakes')->default(1);       // Kesempatan remedial (1 = bisa remedial 1x)
+            $table->boolean('is_random_order')->default(true); // Opsi acak soal antar peserta
+            $table->boolean('is_active')->default(true);
+            
+            $table->timestamps();
+        });
+    }
+
+    public function down()
+    {
+        Schema::dropIfExists('exams');
+    }
+};