Add Tenant model, controller, and migration; update Producto model to reference tenant_codigo

database/migrations/2026_06_18_135000_create_tenants_table.php

@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('tenants', function (Blueprint $table) {
+            $table->id();
+            $table->string('codigo')->unique();
+            $table->string('nombre');
+            $table->string('dominio')->nullable();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('tenants');
+    }
+};

database/migrations/2026_06_19_000000_update_productos_tenant_reference_to_codigo.php

@@ -0,0 +1,38 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('productos', function (Blueprint $table) {
+            $table->dropColumn('tenant_id');
+        });
+
+        Schema::table('productos', function (Blueprint $table) {
+            $table->string('tenant_codigo')->after('id');
+            $table->foreign('tenant_codigo')->references('codigo')->on('tenants')->cascadeOnUpdate()->restrictOnDelete();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('productos', function (Blueprint $table) {
+            $table->dropForeign(['tenant_codigo']);
+            $table->dropColumn('tenant_codigo');
+        });
+
+        Schema::table('productos', function (Blueprint $table) {
+            $table->unsignedBigInteger('tenant_id')->after('id');
+        });
+    }
+};