Duplicate records as drafts, and preview them from the form

The copy keeps the content, stack and team, but is unpublished, out of any
review, and gets a title marked as a copy and a free slug. It replaces
Filament's replicate action, which left the copy without a slug and still
published. The same copy is available through the API.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/Http/Controllers/Api/V1/DuplicateController.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers\Api\V1;
+
+use App\Http\Controllers\Api\V1\Concerns\ResolvesContent;
+use App\Http\Controllers\Controller;
+use App\Support\ContentTypes;
+use App\Support\Duplicator;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+/**
+ * A draft copy of a page, project, service or call — the panel's "Duplicate".
+ */
+class DuplicateController extends Controller
+{
+    use ResolvesContent;
+
+    public function store(Request $request): JsonResponse
+    {
+        $record = $this->record($request);
+
+        $this->authorize('view', $record);
+        $this->authorize('create', $record::class);
+
+        $copy = Duplicator::duplicate($record);
+
+        return response()->json(['data' => [
+            'type' => $this->content($request),
+            'id' => $copy->getKey(),
+            'title' => ContentTypes::title($copy),
+            'slug' => (object) $copy->getTranslations('slug'),
+        ]], 201);
+    }
+}