feat: system tools and admin enhancements

database/migrations/2026_01_31_000000_create_audit_logs_table.php

@@ -0,0 +1,31 @@
+<?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('audit_logs', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('user_id')->nullable()->constrained()->nullOnDelete();
+            $table->string('action');
+            $table->string('subject_type')->nullable();
+            $table->unsignedBigInteger('subject_id')->nullable();
+            $table->json('metadata')->nullable();
+            $table->string('ip_address', 45)->nullable();
+            $table->string('user_agent', 255)->nullable();
+            $table->timestamps();
+
+            $table->index(['action', 'created_at']);
+            $table->index(['user_id', 'created_at']);
+            $table->index(['subject_type', 'subject_id']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('audit_logs');
+    }
+};