- Implement pure state engine (`DominionLogic.js`) with turn lifecycle, card effects queue, and pending decision resolution for complex interactions.
- Add card definitions and kingdom pool (`DominionCards.js`) supporting Standard and Random deck modes.
- Create AI logic (`DominionAI.js`) using Big Money/early engine strategies scaled by opponent skill.
- Build Phaser scene (`DominionGame.js`) with supply/hand rendering, turn drivers, modal prompts for pending decisions, and end-game scoring.
- Wire up game registry, routing, preload assets, and opponent selection UI to support the new mode.