Review queue for negative-sentiment tickets, and passive-aggression detection

Let coordinators put a ticket into a review state when a sentiment or tonality alert fires, with an owner and an outcome, so nothing goes unread.

Teach the scanner to flag polite-sounding pressure such as "just checking in, it has been a while" as well as open anger.

Today: sentiment and tonality alerts have thresholds and client calibration, and the Customer Success feed can reprocess, dismiss, silence or open a CS ticket.