I noticed today that Tuya Scenes are appearing in Home Assistant (I’m connected via Tuya Cloud).
These are created under ‘tap to run’ under ‘smart’ and appear to trigger correctly via HA.
To avoid the risk of the ‘start’ firing correctly and the ‘stop’ not firing - and the fact I generally only need to water for 3 minutes at a time - I’ve created a tuya scene with a manual watering on, 3 minute delay, manual watering off which I’ll trigger from HA moving forward, using weather-based rules etc.