Update ILI9488 display initialization to correct portrait orientation

esphome/cat-medication-tracker.yaml

@@ -9,17 +9,6 @@ esphome:
     priority: 100
     then:
       - light.turn_on: backlight
-      - delay: 300ms
-      - lambda: |-
-          // Override MADCTL to 0x48: MX=1, BGR=1 — fixes horizontal mirror
-          uint8_t cmd = 0x36, dat = 0x48;
-          digitalWrite(2, LOW);                        // DC = command
-          id(my_display)->enable();                    // assert CS
-          id(my_display)->write_array(&cmd, 1);        // MADCTL command
-          digitalWrite(2, HIGH);                       // DC = data
-          id(my_display)->write_array(&dat, 1);        // MX=1, BGR=1
-          id(my_display)->disable();                   // deassert CS
-      - component.update: my_display
 
 esp32:
   board: esp32dev
@@ -76,6 +65,8 @@ display:
     rotation: 0
     invert_colors: false
     color_order: bgr
+    init_sequence:
+      - [0x36, 0x48]  # MADCTL: MX=1, BGR=1 — correct portrait orientation for this board
     data_rate: 10MHz
     dimensions:
       width: 320