Update utils documentation

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

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

**Priority**: Low/Medium

The issue names the utils documentation and the store, but no files, tests, or entry points. Start by locating the store implementation and any existing search-related utility or tests, then clarify the intended configurable search behavior and defaults. Done means the agreed search behavior is implemented, covered by tests, and reflected in the utils documentation.

Written by the indexing model from the issue text.