mapgen: obstacles, bridges-arena, chokepoint-arena + per-scenario authoring

collect_eval_data: cell-level retry on transient API errors

Phase 5 final: 74-cell triage strengthens F1 to ≥30pp scaling delta

Phase 4 data plumbing + 3rd defect partial fix

Quality drive: schema fix, 5 new/revised packs, 4 engine tests, scenario audit

Add triage tool + scope paper around out-of-engine features

Defect-fix wave: restore the no-cheat bar across 10 packs

Add scenario quality audit + coverage map scripts

#2: enforce ordered waypoints (stateful waypoint_sequence) + two-path medium + scouted hard

action-multiunit-coordination hard: spatial-grounding via relative-direction objective

HTML scenario catalog + clearer custom-map-no-enemy descriptions

Playback: capture model reasoning + per-turn goal tracker + viewer