facebook-marketplace-safety-guard

@velinussage

USE WHEN any outbound Marketplace message is about to send, or any inbound seller/buyer message has just been captured, and you want a structured pass/blocked verdict for off-platform payment asks, deposit/holdback requests, premature identity exchange, shipping commitments outside listing policy, and common scam patterns. DON'T USE WHEN you want the skill to generate off-platform contact details (it never does) or to override a block without explicit user override.