Stage 3 — WO photos + ETA + QR + public tracking page

- HasMedia (Spatie) on WorkOrder with `photos` collection
- eta_at + tracking_token columns; token auto-generated on create
- Public /t/{token} page — tenant-scoped via subdomain, white-label themed
- QR code SVG via chillerlan/php-qrcode (inline modal + download)
- Filament: SpatieMediaLibraryFileUpload + ETA picker + tracking section
- EditWorkOrder header action "Link client (QR)" modal
- Fix: Auditable::dontSubmitEmptyLogs() → dontLogEmptyChanges() (removed in activitylog)
- Tests: TrackingPageTest (4 pass) covering token gen + cross-tenant isolation

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/Filament/Tenant/Resources/WorkOrderResource/Pages/EditWorkOrder.php

@@ -15,6 +15,16 @@ class EditWorkOrder extends EditRecord
     protected function getHeaderActions(): array
     {
         return [
+            Actions\Action::make('tracking')
+                ->label('Link client (QR)')
+                ->icon('heroicon-m-qr-code')
+                ->color('primary')
+                ->modalHeading(fn () => 'Tracking client — WO #' . $this->record->number)
+                ->modalSubmitAction(false)
+                ->modalCancelActionLabel('Închide')
+                ->modalContent(fn () => view('filament.tenant.tracking-qr', [
+                    'wo' => $this->record,
+                ])),
             Actions\Action::make('pdf')
                 ->label('Descarcă PDF')
                 ->icon('heroicon-m-document-arrow-down')