fix v1.36.1: hidden grouped lamps toggle the lamp, not the DND switch

- primaryEntity: tiered selection, domain priority beats hidden flag
  (hidden light > visible config switch); visible same-domain still wins
- live-debugged on the real install: individual lamps hidden in the
  registry (light group setup) got switch.*_do_not_disturb / identify
  buttons as primary — tap toggle 'did nothing'
- +1 unit test (101); TESTING/CHANGELOG same-commit

docs/CHANGELOG.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## v1.36.1 — 2026-07-23
+- Fixed tap-toggle "doing nothing" on lamps whose individual `light.*` entity
+  is **hidden in the registry** (the usual setup when lamps are folded into a
+  light group): the primary entity fell through to a visible config switch
+  (do-not-disturb) or an identify button, and the click toggled THAT.
+  Primary selection now works in tiers — domain priority beats hiddenness,
+  so a hidden light still wins over a visible config switch, while visible
+  entities of the same domain keep winning over hidden ones.
+
 ## v1.36.0 — 2026-07-23 (wall switches that really switch)
 - Markers gained **"Controls light sources"**: bind any set of `light.*` /
   `switch.*` entities to an icon. With tap action **Toggle**, a click flips

docs/TESTING.md

@@ -140,6 +140,10 @@ Run the *core flows* (marked ★ below) in each environment at least once per mi
       (explicit ripple color still wins); off/white lights unchanged [auto]
 - [ ] Alarm pulse (v1.27.0): leak/smoke/gas/CO/siren in 'on' pulse a red ring over any
       display mode; clears on 'off'; unavailable never alarms [auto]; reduced-motion static
+- [ ] Hidden-light primary (v1.36.1): a lamp whose light entity is HIDDEN in
+      the registry (folded into a light group) still toggles/reflects the lamp,
+      not its do-not-disturb switch or identify button; visible entities of the
+      same domain still win over hidden ones [manual: click hallway lamps]
 - [ ] Marker controls (v1.36.0): a marker with "Controls light sources" and
       tap action Toggle flips all bound lights/switches at once (any on → all
       off, all off → all on, one service call); the icon and its RGB tint