Updated icons, buttons, and display; issues still with Main Room button, and sliders.

TODO.md

@@ -2,18 +2,20 @@
 
 ## Not yet verified on hardware
 
-The Home Assistant rewrite, the new dashboard and the desktop simulator all
-build clean, and the HA request/parse/render path was verified end to end
-against the live instance **in the simulator**. None of it has run on the
-panel yet. Specifically unconfirmed on device:
+Flashed and booting clean (icons on, first poll ~8s, no errors), but eyes and
+fingers haven't confirmed:
 
-1. Touch actually toggling a light (the service calls were verified against HA
-   directly, and idempotently — `turn_off` on already-off entities).
-2. Whether the shorter pause window (~85ms LAN HTTP, no TLS) makes the
-   left-edge artefacts rarer, as item 1 below predicts.
-3. That the six light tiles are comfortable finger targets at 125px. This is
-   the thing most likely to need another pass, and the simulator's mouse
-   cannot answer it.
+1. Touch actually toggling a light end-to-end. Tiles are now **optimistic**:
+   they flip on tap immediately and hold that state up to 5s until HA
+   confirms (see `light_hold_t` in ui_manager.c). If a tile flips then snaps
+   back 5s later, the command failed — check `ha_client` on serial.
+2. Whether the full-screen invalidate after each poll actually bounds the
+   left-edge artefacts (it repaints them away; it cannot prevent them). If
+   lines still persist for longer than one poll interval, that mechanism is
+   not working and the next lever is pausing only around LVGL's flush.
+3. That the six light tiles are comfortable finger targets at ~125px, and
+   that sliders track the finger without jumping (poll updates skip pressed
+   sliders by design).
 
 ## Done