f0316013fc
Added three test cases to validate importGameContext method: 1. Valid PGN with moves returns Right with populated GameContext 2. Invalid PGN (illegal move) returns Left with error message 3. PGN with no moves returns Right with initial position Tests use coordinate notation (e.g., e2e4) compatible with importGameContext's move replay mechanism. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>