Refactor code for improved readability and consistency

- Reformatted function signatures in `organization_service.py` and `task_service.py` for better alignment.
- Updated import statements across multiple files for consistency and organization.
- Enhanced test files by improving formatting and ensuring consistent use of async session factories.
- Added type hints and improved type safety in various service and test files.
- Adjusted `pyproject.toml` to include configuration for isort, mypy, and ruff for better code quality checks.
- Cleaned up unused imports and organized existing ones in several test files.

app/services/contact_service.py

@@ -1,4 +1,5 @@
 """Business logic for contact workflows."""
+
 from __future__ import annotations
 
 from collections.abc import Sequence
@@ -78,7 +79,9 @@ class ContactService:
             owner_id=filters.owner_id,
         )
         try:
-            return await self._repository.list(params=params, role=context.role, user_id=context.user_id)
+            return await self._repository.list(
+                params=params, role=context.role, user_id=context.user_id
+            )
         except ContactAccessError as exc:
             raise ContactForbiddenError(str(exc)) from exc
 
@@ -122,7 +125,9 @@ class ContactService:
         if not payload:
             return contact
         try:
-            return await self._repository.update(contact, payload, role=context.role, user_id=context.user_id)
+            return await self._repository.update(
+                contact, payload, role=context.role, user_id=context.user_id
+            )
         except ContactAccessError as exc:
             raise ContactForbiddenError(str(exc)) from exc