feat: Add mypy to pre-commit.

tests/unit/test_api_banks.py

@@ -5,8 +5,6 @@ import respx
 import httpx
 from unittest.mock import patch
 
-from leggend.services.gocardless_service import GoCardlessService
-
 
 @pytest.mark.api
 class TestBanksAPI:

tests/unit/test_api_client.py

@@ -1,6 +1,7 @@
 """Tests for CLI API client."""
 
 import pytest
+import requests
 import requests_mock
 from unittest.mock import patch
 
@@ -85,7 +86,7 @@ class TestLeggendAPIClient:
         """Test handling of connection errors."""
         client = LeggendAPIClient("http://localhost:9999")  # Non-existent service
 
-        with pytest.raises(Exception):
+        with pytest.raises((requests.ConnectionError, requests.RequestException)):
             client.get_accounts()
 
     def test_http_error_handling(self):
@@ -99,7 +100,7 @@ class TestLeggendAPIClient:
                 json={"detail": "Internal server error"},
             )
 
-            with pytest.raises(Exception):
+            with pytest.raises((requests.HTTPError, requests.RequestException)):
                 client.get_accounts()
 
     def test_custom_api_url(self):

tests/unit/test_config.py

@@ -1,8 +1,6 @@
 """Tests for configuration management."""
 
 import pytest
-import tempfile
-from pathlib import Path
 from unittest.mock import patch
 
 from leggend.config import Config
@@ -164,9 +162,11 @@ class TestConfig:
             config = Config()
             config._config = None
 
-            with patch("builtins.open", side_effect=FileNotFoundError):
-                with pytest.raises(FileNotFoundError):
-                    config.load_config()
+            with (
+                patch("builtins.open", side_effect=FileNotFoundError),
+                pytest.raises(FileNotFoundError),
+            ):
+                config.load_config()
 
     def test_notifications_config(self):
         """Test notifications configuration access."""

tests/unit/test_scheduler.py

@@ -1,13 +1,10 @@
 """Tests for background scheduler."""
 
 import pytest
-import asyncio
-from unittest.mock import Mock, patch, AsyncMock, MagicMock
+from unittest.mock import patch, AsyncMock, MagicMock
 from datetime import datetime
-from apscheduler.schedulers.blocking import BlockingScheduler
 
 from leggend.background.scheduler import BackgroundScheduler
-from leggend.services.sync_service import SyncService
 
 
 @pytest.mark.unit