feat: Add mypy to pre-commit.

leggend/services/database_service.py

@@ -1,5 +1,5 @@
 from datetime import datetime
-from typing import List, Dict, Any, Optional
+from typing import List, Dict, Any
 
 from loguru import logger
 
@@ -75,7 +75,10 @@ class DatabaseService:
                 datetime.fromisoformat(booked_date), datetime.fromisoformat(value_date)
             )
         else:
-            min_date = datetime.fromisoformat(booked_date or value_date)
+            date_str = booked_date or value_date
+            if not date_str:
+                raise ValueError("No valid date found in transaction")
+            min_date = datetime.fromisoformat(date_str)
 
         # Extract amount and currency
         transaction_amount = transaction.get("transactionAmount", {})

leggend/services/gocardless_service.py

@@ -1,8 +1,7 @@
-import asyncio
 import json
 import httpx
 from pathlib import Path
-from typing import Dict, Any, List, Optional
+from typing import Dict, Any, List
 
 from loguru import logger
 

leggend/services/notification_service.py

@@ -69,7 +69,7 @@ class NotificationService:
             description = transaction.get("description", "").lower()
 
             # Check case-insensitive filters
-            for filter_name, filter_value in filters_case_insensitive.items():
+            for _filter_name, filter_value in filters_case_insensitive.items():
                 if filter_value.lower() in description:
                     matching.append(
                         {

leggend/services/sync_service.py

@@ -1,10 +1,8 @@
-import asyncio
 from datetime import datetime
-from typing import List, Dict, Any
+from typing import List
 
 from loguru import logger
 
-from leggend.config import config
 from leggend.api.models.sync import SyncResult, SyncStatus
 from leggend.services.gocardless_service import GoCardlessService
 from leggend.services.database_service import DatabaseService