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The copy keeps the content, stack and team, but is unpublished, out of any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/Filament/Support/DuplicateAction.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Filament\Support;
+
+use App\Support\Duplicator;
+use Filament\Actions\Action;
+use Filament\Notifications\Notification;
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * "Duplicate": a draft copy to start the next one from, opened straight away.
+ */
+final class DuplicateAction
+{
+    public static function make(): Action
+    {
+        return Action::make('duplicate')
+            ->label(__('panel.duplicate.label'))
+            ->icon('heroicon-o-document-duplicate')
+            ->color('gray')
+            ->requiresConfirmation()
+            ->modalHeading(__('panel.duplicate.heading'))
+            ->modalDescription(__('panel.duplicate.hint'))
+            ->authorize('create')
+            ->action(function (Model $record, $livewire): void {
+                $copy = Duplicator::duplicate($record);
+
+                Notification::make()
+                    ->title(__('panel.duplicate.done'))
+                    ->success()
+                    ->send();
+
+                $livewire->redirect($livewire::getResource()::getUrl('edit', ['record' => $copy]));
+            });
+    }
+}