Add notes on PSRAM usage and display buffer strategy for ESP32-32E

esphome/cat-medication-tracker.yaml

@@ -2,6 +2,10 @@ substitutions:
   name: cat-medication-tracker
   friendly_name: "Cat Medication Tracker"
 
+# ESP32-32E note:
+# This board commonly lacks PSRAM, so we rely on a small TFT render buffer.
+# Keep this display on a reduced buffer/8-bit depth strategy to avoid startup OOM.
+
 esphome:
   name: ${name}
   friendly_name: ${friendly_name}