Marathon

[folkengine]

⏺ Features

• src/history/audit.rs — new AuditResult struct + GameRecord::audit() with 7 structural invariant checks + GameCollection::audit_all()
• src/history/replay.rs — new ReplayResult struct + GameRecord::replay() with deterministic re-deal via initial_draw_pile + GameCollection::replay_all()
• src/history/record.rs — GameCollection promoted from newtype to versioned struct (gfcore_version, format_version, games); FORMAT_VERSION = 1; save() /
  save_to() for timestamped file output; GameRecord gains initial_draw_pile: Option for replay
• src/game/state.rs — pending_turn_actions: Vec accumulator added to Game; populated in handle_ask/handle_draw; flushed into
  TurnRecord::actions; Game::new refactored to setup() helper; Game::new_with_deck() added for replay
• src/prelude.rs — AuditResult and ReplayResult re-exported under #[cfg(feature = "history")]

Fixes

• src/error/mod.rs — GfError::IoError(String) and GfError::NoReplayData variants added; NoReplayData display broadened to cover missing initial_draw_pile
  case
• src/history/replay.rs — removed unused use super::* (CI -D warnings hard error); replay loop refactored from O(n²) per-turn snapshots to single post-loop
  game.record() call
• tests/history_integration.rs — play_game_with_bot_profiles() switched to BotProfile::default_profiles() (4-player mixed strategy) to fix flaky
  non-termination with 2-player BasicStrategy-only setup

Tests

• tests/history_integration.rs — test_audit_all_on_played_collection and test_replay_all_on_played_collection (5 games each)
• tests/bot_marathon.rs — record.audit() added to validate_last_game so every marathon game is structurally audited

Docs / Config

• docs/superpowers/plans/2026-05-09-game-history-audit.md — implementation plan
• docs/superpowers/specs/2026-05-09-game-history-audit-design.md — approved design spec
• .github/workflows/CI.yaml — miri removed from CI; minor workflow tweaks
• Makefile / Cargo.toml / Cargo.lock — minor version/tooling updates