test(config_flow,media_player,remote): digit-delay/send-enter options (store + window/error validation), IME-first text entry with ADB fallback tier, icon column parse/prefill/store (P5-2)

custom_components/nvidia_shield/const.py

@@ -96,6 +96,10 @@ ZEROCONF_SERVICE_TYPE = "_androidtvremote2._tcp.local."
 # consumed by app_name after the androidtv-entity and protocol-push tiers.
 CONF_APP_NAME_MAP = "app_name_map"
 
+# P5-2: optional icon column (package|icon) — package → icon URL, feeding
+# entity_picture when no Jellyfin session picture is live.
+CONF_APP_ICON_MAP = "app_icon_map"
+
 # P5-1: device manifest label cache TTL (long — labels change with app
 # updates, not per poll).
 APP_LABEL_TTL = 24 * 3600