feat v1.36.0: marker controls — wall switches that really switch

- marker.controls[]: bound light.*/switch.* entities; explicit per-marker
  tap_action=toggle flips them with HA-group semantics in one call
  (controlsAction + isControllable pure helpers, +2 unit tests, 100)
- icon state and RGB tint mirror the targets (stateless remotes and
  virtual dumb-switch markers finally show something); info card lists
  targets with states; locks filtered everywhere
- chips+search UI in the marker dialog; backend schema; smoke_controls
  (9 checks); TESTING/CHANGELOG same-commit

docs/TESTING.md

@@ -140,6 +140,12 @@ 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
+- [ ] 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
+      mirror the targets, not the marker's own entity; without explicit Toggle
+      the click opens info as usual; the info card lists targets with states;
+      locks/other domains are filtered out of controls [auto]
 - [ ] Glow fill (v1.35.0): fill mode "Light sources" — every room painted with
       one uniform darkness color; lit lamps glow with a radial gradient
       (rgb_color → color temp → default color; brightness scales opacity),