Representative 7-combatant caster-heavy encounter on sample_arena,
measured through the real engine path (engine._build_observation at each
policy call, delegating to default_policy):
- observation: 64,204 bytes at first call, 67,712 max mid-battle (~16.9k tokens)
- policy calls/battle: 124 (7 combatants, round_cap=20), 12 for a 2v2 duel
- projected calls per sweep cell: 124 / 12,400 / 124,000 at runs 1/100/1000
Loose bounds (obs < 200 KB, calls/battle < 200) + seed-determinism pinned.
