Mediators and how disputes feed Trust Score

**Mediator pool.** Mediators are trained Turtini users who volunteer for the pool. They get matched to disputes by category fit (a former dental-office manager is a good fit for a healthcare-billing dispute). Either party can request one; both have to accept the assignment. Mediators don't decide; they propose process and language.

`dispute_listMediators` returns the pool with category specialties and current load.

**Trust Score impact.** Resolved disputes don't hurt an org's Trust Score — they often help, because they show responsiveness. What hurts:
- Unacknowledged disputes (7-day clock missed)
- Closed-without-resolution
- Repeated disputes in the same category from different filers

The Trust page at /trust/:org-slug surfaces these patterns. A pattern of well-handled disputes is a positive signal; a pattern of ignored ones is a yellow/red signal.

**Audit chain.** Every message, evidence item, and resolution proposal is content-hashed (SHA-256) and chained to the previous item, so tampering is detectable. Even if a database were compromised, the chain would not validate. This is the same primitive used elsewhere in Turtini for high-stakes records.