# ADR: Failure-Mode Degradation Matrix

Status: Accepted  
Date: 2026-05-12

## Decision

V2 degrades by disabling nonessential surfaces first and preserving match
integrity above convenience.

| Dependency Down   | Required Behavior                                                                 |
| ----------------- | --------------------------------------------------------------------------------- |
| `@oshun/identity` | Offline/local only; ranked, purchases, cloud saves, and UGC publishing disabled.  |
| EOS / matchmaking | Local, LAN, training, arcade, and story remain available; online queues disabled. |
| Maat              | Purchases and live-ops changes freeze; earned gameplay rewards queue locally.     |
| Kuanyin           | Public UGC publishing and open chat pause; private/local creation remains.        |
| Iris              | AI commentary, translation, and companion assistant fall back or disable.         |
| Themis            | Appeals queue; UGC publish requiring rights/originality checks blocks.            |
| Region rules      | Highest-restriction regional content profile applies.                             |

## Implementation Contract

Every service integration must include an outage test matching this matrix.