Uncommitted work from previous session:
- Add list_users_select/0 helper for admin select dropdowns
- Add regenerate_token/1 context function
- Preload assigned_by association on monitor queries
- Add admin nav link to beacon monitors
- Fix JS event targets (remove redundant target: @myself)
- Add reassign user form to admin monitor show page
- Add regenerate token button to admin monitor show page
- Show assigned_by admin on monitor detail page
- Add beacon monitors section to user management edit page
- Add unassign monitor capability from user management
- Add full test coverage for all new functionality
- Fix pre-existing /account route warning (redirect → /users/settings)
Graham McIntire
ca842e3add