## MODIFIED Requirements

### Requirement: Multi-session hosts can observe and evaluate each managed session
The multi-session lifecycle coordinator SHALL expose per-session lookup or enumeration and MUST evaluate timeout, heartbeat, login, reconnect, authoritative movement tick rules, and authoritative combat input rules for each managed session independently using the shared session lifecycle vocabulary. Server-side stale-input acceptance, shoot validation, and authoritative gameplay tracking MUST remain scoped to the peer that produced the traffic.

#### Scenario: Timeout affects only one managed session
- **WHEN** one managed session stops receiving liveness updates while another session continues receiving heartbeat or message activity
- **THEN** the timed-out session transitions through timeout or reconnect states according to policy
- **THEN** the active session remains in its current healthy state

#### Scenario: Host can inspect current managed sessions
- **WHEN** server-side code needs to inspect the current connection state of connected peers
- **THEN** it can look up or enumerate managed sessions through the multi-session coordinator
- **THEN** each entry exposes the shared session lifecycle state for that specific peer

#### Scenario: Movement tick filtering remains peer-scoped
- **WHEN** two managed peers send `MoveInput` traffic with different tick progress or ordering
- **THEN** stale-input acceptance is evaluated independently for each managed peer
- **THEN** one peer's late or advanced movement input does not overwrite or suppress the other's authoritative movement state

#### Scenario: Shoot validation remains peer-scoped
- **WHEN** two managed peers send `ShootInput` traffic with different tick progress, target choices, or validation failures
- **THEN** acceptance and rejection are evaluated independently for each sending peer
- **THEN** one peer's stale or invalid shoot request does not overwrite or suppress the other's authoritative combat state
