Extract color block calculation from ProgressMonitor component to
colorBlockHelpers utility module for better testability and reusability.
Changes:
- Created colorBlockHelpers.ts with calculateColorBlocks() and findCurrentBlockIndex()
- Added comprehensive unit tests (11 test cases, all passing)
- Updated ProgressMonitor to use new utility functions
- Reduced component complexity by removing embedded business logic
Benefits:
- Logic can be tested in isolation
- Can be reused elsewhere if needed
- Cleaner component code
- Better separation of concerns
Fixes#44🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
