fix: make instagrapi import lazy to prevent app crash if missing

src/vk_parser_app/workers/insta_parser.py

@@ -8,14 +8,23 @@ import time
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
 
-from instagrapi import Client
+try:
-from instagrapi.exceptions import (
+    from instagrapi import Client
+    from instagrapi.exceptions import (
         ChallengeRequired,
         PleaseWaitFewMinutes,
         LoginRequired,
         UserNotFound,
         PrivateAccount
-)
+    )
+except ImportError:
+    Client = None
+    ChallengeRequired = Exception
+    PleaseWaitFewMinutes = Exception
+    LoginRequired = Exception
+    UserNotFound = Exception
+    PrivateAccount = Exception
+
 from loguru import logger
 
 from ..config import settings
@@ -241,6 +250,10 @@ class InstaParserWorker:
         if self.client:
             return True
             
+        if Client is None:
+            logger.error("instagrapi is not installed! Cannot setup client.")
+            raise Exception("Module instagrapi is not installed. Please install it.")
+        
         self.client = Client()
         if proxy:
             self.client.set_proxy(proxy)