Handle edge cases in import

**Feature request**
It would be great to have search for handlers.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_search` with default `false`.

Start by locating the configuration handling and the code responsible for importing or finding handlers. Determine what “search for handlers” should return and how the `enable_search` option with a default of `false` affects behavior. Define the expected behavior and tests before implementing, since the issue does not name files or specify completion criteria.

Written by the indexing model from the issue text.