Refactor to remove slices and environments, replace with instances.

database/migrations/2025_03_27_122034_create_instances_table.php

@@ -0,0 +1,28 @@
+<?php
+
+use App\Models\Application;
+use App\Models\Server;
+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('instances', function (Blueprint $table) {
+            $table->id();
+            $table->foreignIdFor(Application::class);
+            $table->foreignIdFor(Server::class);
+            $table->string('branch');
+            $table->string('status');
+            $table->json('config')->nullable();
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('instances');
+    }
+};