fix: add eval timeout handling

[WhiteGiverMa]

Summary

• add runtime-side timeout handling for game_eval so long-running evals return a clear error instead of leaving the eval node hanging
• expose an optional imeoutSeconds parameter in the MCP tool and forward it to Godot while keeping the client wait slightly longer than the runtime timeout
• cover the new timeout mapping in handler tests

Verification

• npm test
• npm run build

[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud