Add a translation assistant to the panel

Each field's original sits beside the field to write, and a translation that
fell behind shows what the original said when it was translated and what it
says now, word by word.

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

app/Filament/Support/TranslateAction.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Filament\Support;
+
+use App\Filament\Pages\TranslationAssistant;
+use Filament\Actions\Action;
+use Filament\Actions\ActionGroup;
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * "Translate into…": this record in the translation assistant, one entry per
+ * language there is to translate into.
+ */
+final class TranslateAction
+{
+    public static function make(): ActionGroup
+    {
+        $default = (string) config('locales.default');
+
+        return ActionGroup::make(collect(config('locales.supported'))
+            ->except($default)
+            ->map(fn (array $meta, string $locale) => Action::make("translate_{$locale}")
+                ->label($meta['native'] ?? $locale)
+                ->url(fn (Model $record) => TranslationAssistant::urlFor($record, $locale)))
+            ->values()
+            ->all())
+            ->label(__('panel.translate.action'))
+            ->icon('heroicon-o-language')
+            ->color('gray')
+            ->button();
+    }
+}