Button (Door Button) now toggles Squiggle, Sideboard Lamp, and Bamboo Lights
via three parallel mqtt-out publishes.
Key fix: avoid subscribing to a wildcard '#' topic alongside a specific topic
in the same Node-RED instance. The mqtt-broker re-adds its handler as an
EventEmitter listener on each subscribe call (file:
/usr/src/node-red/node_modules/@node-red/nodes/core/network/10-mqtt.js
_clientOn('message', subscription.handler) is unconditional), so after
each deploy/restart the same message arrives N times to internal listeners.
Each mqtt-in node now uses a unique topic (zigbee2mqtt/<device>).
Removed zigbee-in # wildcard and plug-state ui-text widgets (state now
displayed via per-plug ui-text widgets).
Added function node support to flow2json.py for msg filtering logic.
Added ui-text format/width/height defaults support.
Added dashboard 2.0 config node defaults matching reference flow:
ui-base, ui-theme, ui-page, ui-group with full property set.
david