===== Reliability / Delivery =====

This component defines how MOSH ensures (or does not ensure) delivery of frames.

Delivery modes may include:

Best-effort (no guarantees)
Acknowledged delivery (ACK-based)
Retry with timeout policies

Responsibilities include:

Generating and processing acknowledgments
Managing retransmission attempts
Timeout handling
Preventing infinite retry loops

Reliability behavior is configurable and should be adaptable to the constraints of the transport medium.