Enhance Event admin UI and fix translations

- Remove default_locale and primary_join_token columns from event list
- Add read-only join link field to event edit form
- Add missing translations for used/remaining photos and join link
- Fix array-to-string conversion error in join link modal

app/Filament/Resources/EventResource.php

@@ -60,6 +60,18 @@ class EventResource extends Resource
                 ->required()
                 ->unique(ignoreRecord: true)
                 ->maxLength(255),
+            TextInput::make('join_link_display')
+                ->label(__('admin.events.fields.join_link'))
+                ->afterStateHydrated(function (TextInput $component, ?Event $record) {
+                    if (! $record) {
+                        return;
+                    }
+                    $token = $record->joinTokens()->latest()->first();
+                    $component->state($token ? url('/e/'.$token->token) : '-');
+                })
+                ->readOnly()
+                ->dehydrated(false)
+                ->visibleOn('edit'),
             DatePicker::make('date')
                 ->label(__('admin.events.fields.date'))
                 ->required(),
@@ -103,7 +115,6 @@ class EventResource extends Resource
                 Tables\Columns\TextColumn::make('slug')->searchable(),
                 Tables\Columns\TextColumn::make('date')->date(),
                 Tables\Columns\IconColumn::make('is_active')->boolean(),
-                Tables\Columns\TextColumn::make('default_locale'),
                 Tables\Columns\TextColumn::make('eventPackage.package.name')
                     ->label(__('admin.events.table.package'))
                     ->badge()
@@ -116,22 +127,6 @@ class EventResource extends Resource
                     ->badge()
                     ->color(fn ($state) => $state < 1 ? 'danger' : 'success')
                     ->getStateUsing(fn ($record) => $record->eventPackage?->remaining_photos ?? 0),
-                Tables\Columns\TextColumn::make('primary_join_token')
-                    ->label(__('admin.events.table.join'))
-                    ->getStateUsing(function ($record) {
-                        $token = $record->joinTokens()->latest()->first();
-
-                        return $token ? url('/e/'.$token->token) : __('admin.events.table.no_join_tokens');
-                    })
-                    ->description(function ($record) {
-                        $total = $record->joinTokens()->count();
-
-                        return $total > 0
-                            ? __('admin.events.table.join_tokens_total', ['count' => $total])
-                            : __('admin.events.table.join_tokens_missing');
-                    })
-                    ->copyable()
-                    ->copyMessage(__('admin.events.messages.join_link_copied')),
                 Tables\Columns\TextColumn::make('created_at')->since(),
             ])
             ->filters([])