Description

This PR implements a robust local preferences layer using localStorage to persist user settings across sessions without backend dependency. It also refines the ToolConfig component to correctly handle schema-driven default values and fixes pre-existing test failures in the frontend.

Related Issues

Fixes # (feature/preferences-layer) #98

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

##How Has This Been Tested?

Ran the full Vitest suite for the frontend:

npx vitest run testing/unit/

Verified 11/11 suites and 37/37 tests passed.
Verified localStorage persistence manually in the browser.

Checklist

• My code follows the code style of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.