MQTT 5.0 — retired mapping

Status: rejected architecture record Date: 2026-09-12 Retired: 2026-09-18

The former document mapped MQTT topics, QoS, sessions and transfer points onto weida patterns. That global mapping is not a product contract and has been removed under 0013.

Current sources:

• ../research/mqtt5.md records MQTT 5.0 behavior.
• ../libraries/mqtt.md records weida-mqtt-codec and weida-mqtt parity against named brokers.

An application may explicitly compose weida-mqtt and weida. A future broker Connector may operate one explicitly configured MQTT source or sink attached to a Queue. Neither case establishes a protocol-wide MQTT-to-weida equivalence.