Add import/export, graph UX improvements, and contact management fixes.

Support vCard import and multi-format export, bulk delete with reliable local persistence, Ctrl+link relation creation, cluster-colored graph visualization, and right-click context menus for node details.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/contacts/views.py

@@ -237,14 +237,88 @@ def _normalize_rows(data):
     return []
 
 
+def _unfold_vcard_lines(text):
+    lines = text.replace('\r\n', '\n').replace('\r', '\n').split('\n')
+    unfolded = []
+    for line in lines:
+        if line.startswith((' ', '\t')) and unfolded:
+            unfolded[-1] += line[1:]
+        else:
+            unfolded.append(line)
+    return unfolded
+
+
+def _unescape_vcard_value(value):
+    return (
+        str(value or '')
+        .replace('\\n', '\n')
+        .replace('\\N', '\n')
+        .replace('\\,', ',')
+        .replace('\\;', ';')
+        .replace('\\\\', '\\')
+        .strip()
+    )
+
+
+def _name_from_vcard_n(value):
+    parts = _unescape_vcard_value(value).split(';')
+    family = (parts[0] if len(parts) > 0 else '').strip()
+    given = (parts[1] if len(parts) > 1 else '').strip()
+    additional = (parts[2] if len(parts) > 2 else '').strip()
+    return ' '.join(filter(None, [given, additional, family])).strip()
+
+
+def _parse_vcf_rows(text):
+    props = None
+    rows = []
+    for line in _unfold_vcard_lines(text):
+        trimmed = line.strip()
+        if not trimmed:
+            continue
+        upper = trimmed.upper()
+        if upper == 'BEGIN:VCARD':
+            props = {}
+            continue
+        if upper == 'END:VCARD':
+            if props:
+                name = (
+                    (props.get('FN') or [''])[0]
+                    or _name_from_vcard_n((props.get('N') or [''])[0])
+                ).strip()
+                org_raw = (props.get('ORG') or [''])[0]
+                org = org_raw.split(';')[0].strip() if org_raw else ''
+                email = (props.get('EMAIL') or [''])[0].replace('mailto:', '').strip()
+                phone = (props.get('TEL') or [''])[0].replace('tel:', '').strip()
+                rows.append({
+                    'name': name,
+                    'email': email,
+                    'phone': phone,
+                    'organization': org,
+                    'position': (props.get('TITLE') or [''])[0].strip(),
+                    'notes': '\n'.join(props.get('NOTE') or []).strip(),
+                })
+            props = None
+            continue
+        if props is None:
+            continue
+        if ':' not in trimmed:
+            continue
+        raw_key, value = trimmed.split(':', 1)
+        key = raw_key.split(';')[0].upper()
+        decoded = _unescape_vcard_value(value.replace('mailto:', '').replace('tel:', ''))
+        props.setdefault(key, []).append(decoded)
+    return rows
+
+
 @api_view(['POST'])
 def import_contacts(request):
     """
-    Импорт контактов из CSV или JSON.
+    Импорт контактов из CSV, JSON или vCard (.vcf).
 
     CSV: name,email,phone,organization,position,notes
     JSON (плоский): [{"name": "...", ...}, ...]
     JSON (Monica CRM): {"contacts": [{"first_name": ..., "last_name": ...}, ...]}
+    vCard: экспорт из телефона / Google Contacts (.vcf)
     """
     file = request.FILES.get('file')
     if not file:
@@ -268,9 +342,17 @@ def import_contacts(request):
                     {'error': 'Не удалось распознать формат JSON. Ожидается массив контактов или экспорт Monica CRM.'},
                     status=status.HTTP_400_BAD_REQUEST,
                 )
+        elif filename.endswith('.vcf') or filename.endswith('.vcard'):
+            text = file.read().decode('utf-8-sig')
+            rows = _parse_vcf_rows(text)
+            if not rows:
+                return Response(
+                    {'error': 'В файле vCard не найдено контактов.'},
+                    status=status.HTTP_400_BAD_REQUEST,
+                )
         else:
             return Response(
-                {'error': 'Поддерживаются только CSV и JSON файлы.'},
+                {'error': 'Поддерживаются только CSV, JSON и vCard (.vcf) файлы.'},
                 status=status.HTTP_400_BAD_REQUEST,
             )
     except Exception as e: