- Add main.py with input prompts, bid validation, screen clearing, winner announcement - Add tests/test_main.py with monkeypatched input tests - Update docs/plan.md to mark Milestone 3 as complete
- Add main.py with input prompts, bid validation, screen clearing, winner announcement - Add tests/test_main.py with monkeypatched input tests - Update docs/plan.md to mark Milestone 3 as complete