feat: add app and database modules

database/migrations/2026_01_02_161054_create_notifications_table.php

@@ -0,0 +1,42 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('notifications', function (Blueprint $table) {
+            $table->id();
+
+            // Konten utama
+            $table->string('title');
+            $table->text('message');
+
+            // Target penerima (Hierarchical: all, user, admin, superadmin, or user_id)
+            $table->string('recipient')->index();
+
+            // Jenis notifikasi
+            $table->enum('type', ['info', 'warning', 'system'])->default('info');
+
+            // Status baca
+            $table->timestamp('read_at')->nullable();
+
+            // Pembuat notifikasi
+            $table->foreignId('created_by')
+                ->nullable()
+                ->constrained('users')
+                ->nullOnDelete();
+
+            $table->timestamps();
+            $table->softDeletes();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('notifications');
+    }
+};