FIX unable to defend

[fbec76]

No description provided.

[Copilot]

Pull Request Overview

This PR refactors the enemy attack defense system to fix an issue where players were unable to defend against enemy attacks. The key change is separating validation logic from the actual defense handling, allowing for proper pre-validation of player capabilities before requiring card selection.

• Splits handle_enemy_attack into separate validation and defense handling functions
• Improves user experience by preventing empty input during mandatory discard phases
• Fixes enemy card display to show only attack value instead of health|attack format

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/game/engine.py	Refactors defense logic into validation and handling phases to fix defense capability issues
src/cli/input_handler.py	Adds mandatory input requirement for discard phases to prevent empty selections
src/cli/display.py	Updates enemy card display format to show attack-only instead of health|attack

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