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

main/main.c

@@ -167,6 +167,22 @@ static void ha_task(void *arg)
 
         lvgl_port_resume();
 
+        /*
+         * Repaint everything after every fetch window.
+         *
+         * The known left-edge artefacts (see README) happen when WiFi
+         * interrupt load starves the bounce-refill ISR, and once bad pixels
+         * are on screen LVGL has no idea they are wrong -- it never
+         * reinvalidates them, so they sit there indefinitely. A full
+         * invalidate after each poll bounds their lifetime at one poll
+         * interval. Mitigation, not cure: it cannot prevent the glitch,
+         * only clean up after it.
+         */
+        if (lvgl_port_lock(100)) {
+            lv_obj_invalidate(lv_screen_active());
+            lvgl_port_unlock();
+        }
+
         poll_count++;
 
         if (err == ESP_OK || on_fallback) {