story(architecture): Client/Server Architecture ADR

[Zaba505]

Description

This ADR will document the design decisions for the client/server implementation, including the server's responsibilities for game state management, turn coordination, and validation of bot actions.

Acceptance Criteria

• ADR document is created following the standard ADR template
• Server responsibilities are clearly defined (game state management, turn coordination, validation)
• Architecture diagrams are included showing component interactions
• Trade-offs and alternatives are documented
• Decision rationale is clearly explained

Related Issues

Related to [0001] Proof of Concept - 1v1 Battle user journey