feat(maa): add recruitment restrictions and rebalance men-at-arms
Add can_recruit triggers: Hazekillers/Noble Guard require noble
scadrian culture, Koloss require duchy+ rank, Mistborn Agents
require Allomancers in court. Rebalance stats: reduce Koloss max
(300→150), increase Koloss costs, reduce Mistborn Agent damage
(100→80), remove self-counter on skirmishers, increase Hazekiller
counter multiplier (1→2), halve Skaa Levy max (1000→500). Add
siege_value to Koloss.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.6
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