messages implemented

database/migrations/2026_02_26_300000_create_conversations_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('conversations', function (Blueprint $table) {
+            $table->id();
+            $table->enum('type', ['direct', 'group'])->default('direct');
+            $table->string('title')->nullable();
+            $table->unsignedBigInteger('created_by');
+            $table->timestamp('last_message_at')->nullable()->index();
+            $table->timestamps();
+
+            $table->foreign('created_by')->references('id')->on('users')->onDelete('cascade');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('conversations');
+    }
+};