This module is scaffolded and wired to Firestore. The following features are queued for implementation:
☐ Role definitions: Admin / Manager / QA / Operator / Viewer
☐ Assign roles to Firebase user accounts by email
☐ Page-level permissions (e.g. Operators cannot access Costing)
☐ Action-level permissions (e.g. Operators cannot approve holds)
☐ Audit log of all role changes
☐ Invite new users with pre-assigned role
☐ Suspend / deactivate users without deleting history
☐ Role hierarchy enforcement across all modules