Support kelvin light color-temp attributes (HA 2026.3+) - #33
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HA 2026.3 removed the mired light attributes (color_temp, min_mireds, max_mireds) and the color_temp turn_on parameter in favour of the kelvin equivalents, so Hemera's color-temp control silently disappeared for lamps on updated servers. Read path (LightEntity): prefer the legacy mired attributes when present, otherwise derive them from color_temp_kelvin / min_/max_color_temp_kelvin (reciprocal conversion; bounds invert). Write path (LightController): send color_temp_kelvin, accepted by HA since 2022.11 so it covers every version Hemera supports. Both old and new servers now work. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Changes
LightEntity.update(from:): read the kelvin color-temp attributes (color_temp_kelvin,min_color_temp_kelvin,max_color_temp_kelvin) as a fallback, deriving mireds from them when the legacy mired attributes are absent. Legacy mireds are still preferred when present.LightController.setColorTemp: sendcolor_temp_kelvininstead of the removedcolor_temp(mireds) service parameter.LightEntityTestscases covering kelvin-derived (inverted) bounds and legacy-mireds-preferred.Why
HA 2026.3 removed the mired light attributes (
color_temp,min_mireds,max_mireds) and thecolor_templight.turn_onparameter in favour of the kelvin equivalents. Hemera read/wrote only mireds, so the color-temp control silently disappeared for lamps on updated servers. This restores it while keeping older (mireds-only) servers working.Notes
color_temp_kelvinhas been accepted bylight.turn_onsince HA 2022.11, so the single kelvin write path covers every version Hemera supports — no dual write needed.