## ADDED Requirements

### Requirement: Provider terminal events end forwarding
Encrypted provider termination and unexpected provider disconnect SHALL stop media forwarding, close the Verse tunnel within a bounded interval, release the session reservation, and report the appropriate durable provider/session state.

#### Scenario: Host termination closes the tunnel
- **WHEN** the native provider emits an authenticated termination event
- **THEN** no later provider media is delivered and the client tunnel, reservation, and durable lifecycle transition complete

#### Scenario: Unexpected provider disconnect is reconnectable
- **WHEN** required provider transport disconnects without acknowledged termination
- **THEN** forwarding stops and the Server receives the existing reconnectable lifecycle state rather than a termination claim

### Requirement: Cleanup failure remains durable
Gateway cleanup MUST preserve `cleanup_pending` when provider input release, transport cleanup, authorized cancellation, or durable reporting fails.

#### Scenario: Terminal cleanup fails
- **WHEN** a provider terminal event is handled but required cleanup cannot complete
- **THEN** the session is not reported released or reusable and durable state remains cleanup pending