refactor: modernize code quality tooling with Ruff

- Replace black, isort, and flake8 with Ruff (all-in-one linter and formatter)
- Add comprehensive pyproject.toml configuration
- Simplify Makefile code quality targets
- Configure exclusions for venv/.venv in pyproject.toml
- Auto-fix 1,359 linting issues across codebase

Benefits:
- Much faster builds (Ruff is written in Rust)
- Single tool replaces multiple tools
- More comprehensive rule set (UP, B, C4, SIM, PIE, RET, Q)
- All configuration centralized in pyproject.toml
- Better import sorting and formatting consistency

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/services/vendor_team_service.py

@@ -8,20 +8,23 @@ Handles:
 - Role assignment
 - Permission management
 """
+
 import logging
 import secrets
 from datetime import datetime, timedelta
-from typing import Any, Dict, List, Optional
+from typing import Any
 
 from sqlalchemy.orm import Session
 
 from app.core.permissions import get_preset_permissions
-from app.exceptions import (CannotRemoveOwnerException,
-                            InvalidInvitationTokenException,
-                            MaxTeamMembersReachedException,
-                            TeamInvitationAlreadyAcceptedException,
-                            TeamMemberAlreadyExistsException,
-                            UserNotFoundException, VendorNotFoundException)
+from app.exceptions import (
+    CannotRemoveOwnerException,
+    InvalidInvitationTokenException,
+    MaxTeamMembersReachedException,
+    TeamInvitationAlreadyAcceptedException,
+    TeamMemberAlreadyExistsException,
+    UserNotFoundException,
+)
 from middleware.auth import AuthManager
 from models.database.user import User
 from models.database.vendor import Role, Vendor, VendorUser, VendorUserType
@@ -43,8 +46,8 @@ class VendorTeamService:
         inviter: User,
         email: str,
         role_name: str,
-        custom_permissions: Optional[List[str]] = None,
-    ) -> Dict[str, Any]:
+        custom_permissions: list[str] | None = None,
+    ) -> dict[str, Any]:
         """
         Invite a new team member to a vendor.
 
@@ -196,9 +199,9 @@ class VendorTeamService:
         db: Session,
         invitation_token: str,
         password: str,
-        first_name: Optional[str] = None,
-        last_name: Optional[str] = None,
-    ) -> Dict[str, Any]:
+        first_name: str | None = None,
+        last_name: str | None = None,
+    ) -> dict[str, Any]:
         """
         Accept a team invitation and activate account.
 
@@ -330,7 +333,7 @@ class VendorTeamService:
         vendor: Vendor,
         user_id: int,
         new_role_name: str,
-        custom_permissions: Optional[List[str]] = None,
+        custom_permissions: list[str] | None = None,
     ) -> VendorUser:
         """
         Update a team member's role.
@@ -392,7 +395,7 @@ class VendorTeamService:
         db: Session,
         vendor: Vendor,
         include_inactive: bool = False,
-    ) -> List[Dict[str, Any]]:
+    ) -> list[dict[str, Any]]:
         """
         Get all team members for a vendor.
 
@@ -445,7 +448,7 @@ class VendorTeamService:
         db: Session,
         vendor: Vendor,
         role_name: str,
-        custom_permissions: Optional[List[str]] = None,
+        custom_permissions: list[str] | None = None,
     ) -> Role:
         """Get existing role or create new one with preset/custom permissions."""
         # Try to find existing role with same name
@@ -492,7 +495,6 @@ class VendorTeamService:
         # - Vendor name
         # - Inviter name
         # - Expiry date
-        pass
 
 
 # Create service instance