Fix Spaces config: app_file at root, add app.py wrapper

feat(game): Option A auto-critical, discretionary proposals, remove CRITICAL_FAILURE

(train) pre-test train

Merge origin/main; resolve test_game_loop (no force_advance in VOTING) and tests for linear reward, empty reset info

Align tests and game with debate gating, log rewards, and OpenEnv reset info

Merge main and fix benchmark adapter review issues

fix(core): preserve rejection and shutdown paths

feat(core): implement NationGame orchestration