Only clear the forecast when the data source changes#707
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The refresh handler used to wipe the Loop and Trio forecasts on every refresh, including every websocket disconnect, which made the Loop forecast disappear and only come back on the next loop cycle. Move the clearing so it only happens when the active system actually changes: when a device status flips between Loop and Trio, and when Nightscout is turned off so there is no device status source at all, such as Dexcom only.
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Jul 17, 2026
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The refresh handler cleared the Loop and Trio forecasts on every refresh, including every websocket disconnect. On Loop that made the forecast vanish and only reappear on the next loop cycle, so on some instances it looked like it never came back.
The clearing now only happens when the active system actually changes. When a device status flips between Loop and Trio the previous system's forecast is dropped, and when Nightscout is turned off so there is no device status source, such as Dexcom only, both forecasts are cleared. Normal refreshes and websocket reconnects no longer touch the forecast.