This is a placeholder body generated by the flow_automation runner stub. Replace generate() with the brightsites-ai Worker call. Facts: {"location_name":"Brecon","postcode":"LD3 7AE","observed_at":"2026-07-08","day_name":"Wednesday","temperature_c":28.6,"feels_like_c":28.4,"condition":"Sunny day","wind_mph":4.8,"precipitation_probability":5,"warnings":[]}