turbo

c24b91f0 - test: add comprehensive unit tests for watch mode change event handling

test: add comprehensive unit tests for watch mode change event handling - Add 10 unit tests for handle_change_event function and ChangedPackages enum - Tests cover all three event types: PackageChanged, RediscoverPackages, Error - Tests state transitions between Some packages and All packages states - Tests edge cases like duplicates, empty states, and error propagation - Improves coverage for critical watch mode business logic