Answer the inbox from the panel, with templates

A reply starts from a template filled in the language the person wrote in,
is sent by the application when it has a mailer that delivers or handed to
the replier's mail program otherwise, and is recorded on the submission.
The same is available through the API.

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

app/Filament/Resources/Applications/Schemas/ApplicationInfolist.php

@@ -5,7 +5,9 @@ declare(strict_types=1);
 namespace App\Filament\Resources\Applications\Schemas;
 
 use App\Models\Application;
+use App\Models\ApplicationReply;
 use Filament\Infolists\Components\KeyValueEntry;
+use Filament\Infolists\Components\RepeatableEntry;
 use Filament\Infolists\Components\TextEntry;
 use Filament\Schemas\Components\Section;
 use Filament\Schemas\Schema;
@@ -69,6 +71,36 @@ class ApplicationInfolist
                         ->visible(fn (Application $record) => filled($record->links)),
                 ]),
 
+            // What was already said, so the next person to open this does not
+            // say it again.
+            Section::make(__('panel.replies.history'))
+                ->visible(fn (Application $record) => $record->replies()->exists())
+                ->schema([
+                    RepeatableEntry::make('replies')
+                        ->hiddenLabel()
+                        ->schema([
+                            TextEntry::make('subject')
+                                ->hiddenLabel()
+                                ->weight('bold'),
+
+                            TextEntry::make('created_at')
+                                ->hiddenLabel()
+                                ->state(fn (ApplicationReply $record) => __('panel.replies.by', [
+                                    'name' => $record->user_name ?? '—',
+                                    'when' => $record->created_at?->isoFormat('LLL'),
+                                ]).' · '.__('panel.replies.channels.'.$record->channel))
+                                ->color('gray'),
+
+                            TextEntry::make('body')
+                                ->hiddenLabel()
+                                ->prose()
+                                ->formatStateUsing(fn (string $state) => nl2br(e($state)))
+                                ->html()
+                                ->columnSpanFull(),
+                        ])
+                        ->columns(2),
+                ]),
+
             Section::make(__('panel.applications.sections.internal'))
                 ->description(__('panel.applications.sections.internal_hint'))
                 ->columns(4)