fix: dodaj fotografije servisnih zapisa u DOCX

DOCX izvjestaj servisnih zapisa sada ugradjuje povezane fotografije nakon kompresije slike za manju velicinu dokumenta.

Dodan je regresijski test koji provjerava da generirani DOCX sadrzi embedded media datoteke.

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

backend/modules/fleet/views.py

@@ -236,6 +236,31 @@ def _compress_image_for_pdf(image_field, max_width=1280, quality=75):
             pass
 
 
+def _compress_image_for_docx(image_field, max_width=1600, quality=80):
+    """
+    Pripremi sliku za python-docx kao JPEG stream razumne veličine.
+    """
+    try:
+        image_field.open('rb')
+        with Image.open(image_field) as src:
+            img = src.convert('RGB')
+            if img.width > max_width:
+                ratio = max_width / float(img.width)
+                new_h = max(1, int(img.height * ratio))
+                img = img.resize((max_width, new_h), Image.LANCZOS)
+            buf = BytesIO()
+            img.save(buf, format='JPEG', quality=quality, optimize=True)
+            buf.seek(0)
+        return buf
+    except Exception:
+        return None
+    finally:
+        try:
+            image_field.close()
+        except Exception:
+            pass
+
+
 def _get_cached_pdf(work_order, pdf_type):
     now = timezone.now()
     expected_filename = _pdf_filename(work_order, pdf_type)
@@ -1759,6 +1784,8 @@ def _build_work_order_docx_bytes(work_order):
 
 
 def _build_work_order_service_records_docx_bytes(work_order):
+    from docx.shared import Cm
+
     doc = _create_docx_document(SERVICE_REPORT_DOCX_TEMPLATE_NAME)
     vehicle = work_order.vehicle
     client_name = getattr(getattr(vehicle, 'client', None), 'name', None) or '-'
@@ -1805,6 +1832,7 @@ def _build_work_order_service_records_docx_bytes(work_order):
             vehicle_id=work_order.vehicle_id,
         )
         .select_related('performed_by', 'task')
+        .prefetch_related('photos')
         .order_by('service_date', 'created_at')
     )
     records_by_task = {
@@ -1915,6 +1943,20 @@ def _build_work_order_service_records_docx_bytes(work_order):
             doc.add_paragraph(f"Korišteni dijelovi: {record.parts or '-'}")
             doc.add_paragraph(f"Trošak: {record.cost or '-'} EUR")
             doc.add_paragraph(f"Kilometraža: {record.mileage if record.mileage is not None else '-'}")
+            photos = [photo for photo in record.photos.filter(is_active=True).all() if photo.image]
+            if photos:
+                doc.add_paragraph('Fotografije:')
+                for photo in photos:
+                    image_stream = _compress_image_for_docx(photo.image)
+                    if image_stream is None:
+                        continue
+                    try:
+                        doc.add_picture(image_stream, width=Cm(16))
+                    except Exception:
+                        continue
+                    photo_caption = str(photo.description or '').strip()
+                    if photo_caption:
+                        doc.add_paragraph(photo_caption)
             doc.add_paragraph('')
     if not has_records:
         doc.add_paragraph('Nema povezanih servisnih zapisa za ovaj putni nalog.')