Document card art variation requirements

assets/cards/README.md

@@ -22,6 +22,7 @@ The game art direction is adult-oriented fantasy pinup:
 
 - Characters should emphasize mature curvy female silhouettes and large-breast armor/clothing design.
 - Every character should have a distinct appearance DNA: face shape, eye shape, nose, lips, skin tone, hair, body proportions, bust shape, and overall presence. Avoid generating the same default pretty face and same body repeatedly.
+- Every character should also have a distinct combat identity and pose language: weapon handling, stance, posture, balance, hand placement, and silhouette should vary so the 1000-character roster does not feel like one model in different costumes.
 - Damage-state art should show armor destruction, torn outer clothing, broken belts, damaged bracers, dust, scorch marks, and defeated poses.
 - Defeated and high-damage stages should show emotional defeat: frustrated tears, resentful grimaces, clenched teeth, wet eyes, and expressions that feel unfair or humiliating rather than calm dignity.
 - Medium through defeated stages may show clear combat-pain reactions from abdominal hits: gasping open mouth, hunched posture, labored breathing, tears, and small saliva/drool details. These must read as combat injury reactions, not sexual acts or fetish framing.