HALightOutputTarget gains a `source_kind` field with two modes:
- `css` (existing): per-mapping LED segments averaged from a ColorStripSource.
- `color_vs` (new): one colour from a colour-returning ValueSource pushed to
every mapped entity (mapping LED ranges are ignored in this mode).
Backend wiring:
- Schema/route: add `source_kind` + `color_value_source_id` to create/update/
response payloads, with VS existence + return_type=color validation.
- Storage: persist new fields, with defensive `or ""` coalesce so legacy rows
written via resolve_ref with None survive the str-typed response schema.
- Processor: ha_light_target_processor reworked to drive both source kinds
(incl. update_target_settings hot-swap of source mode). New unit tests in
tests/core/test_ha_light_target_processor.py and extended store tests.
Frontend:
- ha-light editor modal: collapsed Color Strip + Color VS into one
"Color Source" picker with grouped headers; mappings list shows a
mode-aware hint when broadcasting a single colour.
- EntityPalette: support non-selectable header rows (with keyboard / filter
handling) for grouped source pickers.
Bundled UI polish (icon inheritance + cleanup):
- Custom card icons now flow into more surfaces: command palette, dashboard
target cards, scene-preset target picker, calibration test-device picker,
and the LED-target device picker. LED targets inherit their device's icon
when none is set on the target itself.
- Empty mod-card icon plates render as a dashed "+" placeholder when an
icon-picker hook is wired, so the action stays discoverable.
- Icon picker: distinct "HA light target" eyebrow label and supports
HA-light cards (data-ha-target-id) for channel-colour resolution.
- Update banner: "View release" now opens the in-app Update settings tab
instead of an external link; uses the sparkles icon.
- Color-strip delete: cleaner toast on 409 conflict.
alexei.dolgolyov
a79f4bf73c