feat: tambah modul blog dengan resource Filament, halaman publik, dan PostSeeder

database/migrations/2026_04_02_221324_create_posts_table.php

@@ -0,0 +1,27 @@
+<?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('posts', function (Blueprint $table) {
+            $table->id();
+            $table->string('title');
+            $table->string('slug')->unique();
+            $table->string('category')->default('umum'); // umum, pengumuman, berita
+            $table->longText('content');
+            $table->foreignId('author_id')->constrained('users');
+            $table->timestamp('published_at')->nullable();
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('posts');
+    }
+};