- Implement full Stratego rules, including hidden information, combat,
and flag capture mechanics
- Add 5-level AI with heuristic evaluation, unknown enemy reasoning,
and skill-scaled blunders/lookahead
- Create setup phase allowing piece swap and shuffle before battle
- Add detailed unit reference panel with scrollable ability notes
- Implement turn-based battle animations with sci-fi sound effects
- Integrate Stratego into game menu, room scene, and opponent selection
- Add spritesheet assets (stratego-pieces.png) and game menu icon
- Register Stratego in server game registry
