feat: partial payment field + photo upload from dashboard

- WorkOrderResource: pay_status is now live(); added _partial_amount
  TextInput (visible only when pay_status=partial) that shows current
  paid amount and accepts a new total — dehydrated so it does not save
  directly; _achitat hidden when partial is selected to avoid confusion
- EditWorkOrder.afterSave: creates a Payment record for the difference
  when pay_status=partial and entered amount > existing paidAmount
- WorkOrderDashboard: WithFileUploads + uploadPhotos / deletePhoto
  methods using Spatie MediaLibrary
- Dashboard blade: Foto tab replaced with upload form + gallery with
  per-photo delete buttons

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Filament/Tenant/Pages/WorkOrderDashboard.php

@@ -4,6 +4,7 @@ namespace App\Filament\Tenant\Pages;
 
 use App\Models\Tenant\WorkOrder;
 use Filament\Pages\Page;
+use Livewire\WithFileUploads;
 
 /**
  * Mitchell1-style 3-column dashboard view for a single WorkOrder.
@@ -12,6 +13,8 @@ use Filament\Pages\Page;
  */
 class WorkOrderDashboard extends Page
 {
+    use WithFileUploads;
+
     protected static string|\BackedEnum|null $navigationIcon = null;
 
     protected static bool $shouldRegisterNavigation = false;
@@ -191,6 +194,32 @@ class WorkOrderDashboard extends Page
             ->get();
     }
 
+    public array $newPhotos = [];
+
+    public function uploadPhotos(): void
+    {
+        $this->validate(['newPhotos.*' => 'image|max:15360']);
+        foreach ($this->newPhotos as $photo) {
+            $this->record->addMedia($photo->getRealPath())
+                ->usingFileName($photo->getClientOriginalName())
+                ->toMediaCollection('photos');
+        }
+        $this->newPhotos = [];
+        $this->record->refresh();
+        \Filament\Notifications\Notification::make()
+            ->title(__('Fotografii adăugate'))
+            ->success()->send();
+    }
+
+    public function deletePhoto(int $mediaId): void
+    {
+        $media = $this->record->getMedia('photos')->firstWhere('id', $mediaId);
+        if ($media && (int) $media->model_id === $this->record->id) {
+            $media->delete();
+            $this->record->refresh();
+        }
+    }
+
     public string $newMessage = '';
 
     public function sendMessage(): void