The latest engine changes (commit 26d9190) achieved 100% combat death
rate with 2 cores per player, but the verification script was using
the default 1 core. This fix aligns the verification with the
production configuration.
Verification results with 2 cores:
- 2-player random: 20/20 (100%) combat deaths
- 2-player aggressive: 20/20 (100%) combat deaths
- 6-player mixed: 20/20 (100%) combat deaths
All configurations meet or exceed plan §3.7.1 combat density targets.
The previous ZoneMinRadius=5 created a final zone diameter of 10 tiles,
which allowed bots to remain outside the 3.5-tile attack radius even when
both were inside the zone. This resulted in low combat_death rates for
passive bot strategies (~10% for random bots vs the 65-80% target).
With ZoneMinRadius=3, the final zone diameter is 6 tiles, forcing bots
into proximity where focus-fire combat triggers more consistently.
Also adds verify-combat-density.sh script for ongoing metrics tracking.
Closes: bf-4bj9
