test_tools 0.19.1

Tools for writing and running tests.
Documentation
# Refactor mod_interface Aggregation Structure

## Description
Refactor mod_interface aggregation to ensure clean, maintainable module structure (FR-2)

## Acceptance Criteria
- [ ] Module structure is clean and well-organized
- [ ] Documentation explains the aggregation approach
- [ ] Error handling is robust and informative
- [ ] Performance is optimized where possible
- [ ] Code follows project style guidelines
- [ ] All existing tests continue to pass
- [ ] No regression in functionality

## Status
📋 Ready for implementation

## Effort
2 hours

## Dependencies
- Task 009: Implement mod_interface Aggregation