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

src/i18n/en.json

@@ -287,5 +287,9 @@
   "gs.glow_light": "Default light color / intensity",
   "gs.glow_radius": "Glow radius",
   "gs.unit_m": "m",
-  "gs.unit_ft": "ft"
+  "gs.unit_ft": "ft",
+  "marker.controls_label": "Controls light sources",
+  "marker.controls_hint": "With tap action “Toggle”, a click flips all bound lights at once (any on → all off). The icon mirrors their state.",
+  "marker.controls_filter": "Search lights and switches…",
+  "info.controls": "Controls"
 }