ux v1.43.3: room gear discoverability, bigger metrics, touch tooltips take two

- the room gear became a fixed-size pill button (was 0.9em/60% opacity
  inside the label — invisible in practice, field report); shown on
  unnamed rooms too, which is where you name them
- metrics line 0.62em -> 0.75em (unreadable on tablets)
- tooltips: latch on the first touch/pen pointer event instead of
  trusting (hover: none) alone; any touch drops an open tip
- smoke_feedback_v2.mjs; docs same-commit

src/i18n/en.json

@@ -323,5 +323,7 @@
   "room.name_scale": "Room name size",
   "room.label_scale": "Metrics size",
   "preview.room_name": "Living room",
-  "toast.cfg_reload_failed": "Could not reload the plan from the server: {err}"
+  "toast.cfg_reload_failed": "Could not reload the plan from the server: {err}",
+  "room.settings_short": "Room",
+  "room.unnamed": "Unnamed room"
 }