POST 发布市场 SkillBot
POST /loom/v1/marketListings 发布市场 SkillBot
所属分组：Market Listings · 市场上架
Subscription mode requires at least one enabled price tier. New listings provide subscriptionTiers; existing listings use saved automatic bundle tiers. Missing enabled tiers return 409 with code subscription_tier_required.
Creates a new listing or publishes a new immutable listing version from a LoomLoom template version.