next iteration on display, still some artifacting issues, and ux with buttons states and updating

main/api/ha_config.h

@@ -63,15 +63,19 @@
  * put the sofa icon on the patio. Only ui_manager.c expands it; the api-layer
  * consumers ignore the argument, so this header does not include ui_icons.h.
  *
- * Note light.main_room is a GROUP containing blue_lamp, brown_lamp and
- * landing_chandelier. Toggling it changes three of the other tiles; that is
- * expected, and the UI reflects it on the next poll.
+ * light.main_room used to be here and was removed deliberately: it is a
+ * GROUP of blue_lamp, brown_lamp and landing_chandelier -- three of the
+ * other tiles. One tap restyled four tiles at once, which both confused the
+ * optimistic-hold logic and triggered a redraw storm big enough to glitch
+ * the panel (see README on PSRAM bandwidth). Groups spanning other tiles do
+ * not belong in this list. light.tv_room is also a group (of 2), but of
+ * lights that have no tile of their own, which is fine.
  */
 /* Labels must fit one line of Montserrat 16 in a ~125px tile -- roughly 11
  * characters. Longer ones are truncated with an ellipsis, which reads as a
  * mistake. "Dining Room" is one character too wide, hence "Dining". */
 #define HA_LIGHT_LIST(X)                                                                                     \
-    X("light.main_room",                                        "Main Room",   true,  ICON_SOFA)             \
+    X("light.tv_room",                                          "TV Room",     true,  ICON_TV)               \
     X("light.dining_room",                                      "Dining",      true,  ICON_DINING)           \
     X("light.blue_lamp",                                        "Blue Lamp",   true,  ICON_FLOOR_LAMP)       \
     X("light.brown_lamp",                                       "Brown Lamp",  true,  ICON_DESK_LAMP)        \