Refactor lib for better readability

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

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

**Priority**: Low/Medium

Start by locating the store implementation under lib and checking whether the project already has monitoring or telemetry entry points. Determine the required configuration surface and sensible defaults from the existing architecture. Done means the store exposes configurable monitoring with documented defaults and coverage for its behavior.

Written by the indexing model from the issue text.