Add `CardContainer` and `CardSpawner` to handle visual representation of cards in the hand. Refactor `CombatTestScene` to use `GameHostScene` and implement card selection/targeting logic for combat simulation.
Add `CardContainer` and `CardSpawner` to handle visual representation of cards in the hand. Refactor `CombatTestScene` to use `GameHostScene` and implement card selection/targeting logic for combat simulation.