feat(backend): update scheduling handlers

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

backend/handlers/scheduling/scheduling_test.go

@@ -705,7 +705,6 @@ func TestScheduling_GetAvailableHours_WithBlocker_NonAdmin(t *testing.T) {
 	}
 }
 
-
 // TestScheduling_GetAvailableHours_WithBlocker_Admin verifies that admin users
 // CAN see blocked time slots in the blockers field.
 func TestScheduling_GetAvailableHours_WithBlocker_Admin(t *testing.T) {