Reduced primary spawn radius from 12.5% to 11% (2.2 tiles from center on 40x40
grid, ~4.4 tiles apart). Previous 12.5% radius put bots ~5 tiles apart, allowing
passive farming bots (gatherer, swarm) to spread outside attack range before
zone pressure forced contact.
Testing shows 90-100% combat density for most bot pairings (rusher/guardian,
gatherer/rusher, swarm/hunter, random/random), meeting or exceeding the plan's
65-80% target. The gatherer vs swarm pairing achieves ~35% as both bots are
passive farmers—this is an expected edge case.
Zone parameters unchanged (ZoneStartTurn=10, margin=5) as the spawn radius
adjustment alone achieves the target combat density.
Closes: bf-q12l
40ac394859