Add comprehensive tests for settings upload functionality

Update tests to use required sex parameter

Add mock Gradio components for testing

Apply Black code formatting to test files

Fix test failures in CI environment

Add GitHub Actions workflows and comprehensive test suite

Fix all failing batch processing tests

Fix test mocks for segment_tissue return value

Add batch processing optimization for slide analysis

Remove unused global cancer type mappings from aeon.py

Fix unit tests by removing torch mock from conftest.py

Merge with main branch: refactor UI into separate modules and update tests

Address code review feedback: add deterministic seeds and improve mocks

Add comprehensive unit tests for mosaic package