Optimize validation for large datasets

**Description**
Currently store lacks proper filtering support.

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

**Priority**: Low/Medium

The issue names no file, test, or entry point; first locate the store and its validation path, then determine how large datasets are currently handled. Done means configurable filtering is available with sensible defaults and the validation path is optimized, but the issue provides no concrete acceptance tests.

Written by the indexing model from the issue text.