fix: increase image megapixel limit from 8 to 30 MP to include standard phone photos

Previous limit of 8 MP was rejecting standard smartphone photos (12-20 MP),
causing service record PDFs/DOCX documents to be generated without photos.

This was a regression from the image timeout fix: the megapixel guard was
designed to prevent processing of pathologically large files (preventing
worker timeouts), but the threshold was set too aggressively.

Increase limit to 30 MP to allow standard device cameras while still
rejecting extreme outliers that would cause timeout/OOM.

Add regression test test_compress_image_for_docx_keeps_standard_phone_photos
to verify 12 MP photos are accepted.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

backend/modules/fleet/tests/test_work_order_images_endpoint.py

@@ -29,6 +29,7 @@ from modules.fleet.tasks import build_monthly_archive_cached_task
 from modules.fleet.views import (
     _build_monthly_servicer_report_rows,
     _calculate_daily_quantity_from_hours,
+    _compress_image_for_docx,
     _work_order_related_tasks_queryset,
 )
 
@@ -240,6 +241,17 @@ class WorkOrderImagesEndpointTests(TestCase):
         self.assertIn('additional_costs_table', payload)
         self.assertEqual(payload['additional_costs_table']['total_for_payout'], '5.00')
 
+    def test_compress_image_for_docx_keeps_standard_phone_photos(self):
+        file = BytesIO()
+        Image.new('RGB', (4000, 3000), color='blue').save(file, format='JPEG', quality=85)
+        file.seek(0)
+        uploaded = SimpleUploadedFile('phone-12mp.jpg', file.getvalue(), content_type='image/jpeg')
+
+        result = _compress_image_for_docx(uploaded)
+
+        self.assertIsNotNone(result)
+        self.assertGreater(len(result.getvalue()), 0)
+
     def test_work_order_related_tasks_queryset_excludes_other_work_orders_for_same_vehicle(self):
         other_work_order = WorkOrder.objects.create(
             vehicle=self.vehicle,

backend/modules/fleet/views.py

@@ -464,7 +464,7 @@ def _resolve_service_report_tasks(work_order, task_id):
     return [selected_task], selected_task
 
 
-_COMPRESS_IMAGE_MAX_MEGAPIXELS = 8  # preskači slike iznad 8 MP; sprječava timeout i OOM
+_COMPRESS_IMAGE_MAX_MEGAPIXELS = 30  # preskači tek vrlo velike slike (>30 MP); standardni telefoni 12–20 MP ostaju uključeni
 
 
 def _compress_image_for_pdf(image_field, max_width=800, quality=75):