Optimize handlers for large datasets

**Description**
Currently types lacks proper import support.

**Proposed solution**
Add configurable import with sensible defaults.

**Priority**: Low/Medium

Start by locating the handlers and the types import path in the repository, then read the related configuration and data-processing entry points. Clarify whether the goal is large-dataset handler optimization, configurable type imports, or both, and define sensible defaults and completion checks before changing code.

Written by the indexing model from the issue text.