"700W"/"0W" was passed straight through as an untyped string sensor.
Parse the numeral and set device_class/unit so HA treats it as a power
measurement. Add a unit-handling step to the adding-device-support skill
so future dumps get this right the first time.
Reuses the oven family's door/connected/operational-state capabilities
wholesale (identical resource shapes) and adds microwave-specific mode/
cavity/temperature capabilities for the fields that differ (cook-mode
vocabulary, powerLevel, no setpoint write). Resolves via a new '-MICROWAVE-'
modelNum token fallback, mirroring the existing '-OVEN-'/'-RANGE-' rules.
Marc Billow