added media, mutation events, agent instructions

database/migrations/2026_06_15_223630_create_media_table.php

@@ -0,0 +1,22 @@
+<?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('media', function (Blueprint $table) {
+            $table->id();
+            $table->morphs('mediable'); // mediable_type, mediable_id
+            $table->string('file_path');
+            $table->string('file_name');
+            $table->string('mime_type');
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void {
+        Schema::dropIfExists('media');
+    }
+};