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OPQ: Offline Packet Queue

Layer: L0 (Transport) RFC: RFC-0005

Purpose

OPQ allows Libertaria to function in disconnected environments by providing:

Persistent disk-backed storage for frames.
TTL-based pruning.
Quota-enforced storage limits (Policy vs Mechanism).
Queue manifest generation for peer synchronization.

Node Personas & Policy

The OPQ's behavior is dictated by the node's role:

Client: Outbox only. (Retention: <1hr, Buffer: <5MB).
Relay: Store-and-Forward. (Retention: 72-96hr, Buffer: Quota-driven).

Components

store.zig: Segmented WAL (Write-Ahead Log) for atomic persistence.
quota.zig: Hard-quota enforcement and eviction logic.
manager.zig: (Pending) Queue orchestration and manifest sync.