feat(work-order-dashboard): friendly redirect for missing/foreign WO

Instead of a bare 404 when a work-order id doesn't resolve, redirect to
the list with a persistent notification explaining why: either the WO
doesn't exist, or it belongs to a different tenant.

This is the most common 404 cause: user types /app/work-orders/2/dashboard
but WO id 2 is in another tenant's slice — the tenant scope filters it
out and find() returns null.

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

app/Filament/Tenant/Pages/WorkOrderDashboard.php

@@ -34,16 +34,32 @@ class WorkOrderDashboard extends Page
 
     public function mount(int|string $record): void
     {
+        $id = (int) $record;
         $wo = WorkOrder::with([
             'client', 'vehicle', 'master',
             'works.labor', 'works.master',
             'parts.part',
             'payments.user',
             'subcontractJobs.subcontractor',
-        ])->find((int) $record);
+        ])->find($id);
 
         if (! $wo) {
-            abort(404);
+            // Diagnose: does it exist in another tenant?
+            $existsGlobally = WorkOrder::withoutGlobalScopes()
+                ->where('id', $id)->exists();
+            $tenant = app(\App\Tenancy\TenantManager::class)->current();
+            $tenantSlug = $tenant?->slug ?? '—';
+            $msg = $existsGlobally
+                ? sprintf(__('Fișa #%d există, dar nu aparține tenantului „%s".'), $id, $tenantSlug)
+                : sprintf(__('Fișa #%d nu există. Verifică lista de fișe active.'), $id);
+            \Filament\Notifications\Notification::make()
+                ->title(__('Fișă indisponibilă'))
+                ->body($msg)
+                ->danger()
+                ->persistent()
+                ->send();
+            redirect('/app/work-orders')->send();
+            exit;
         }
         $this->record = $wo;
     }