test: command-routing and play_media(channel) orchestration — digit sequence with cancel guard, fallback ordering protocol→ADB→legacy, remote send_command holds/repeats, volume readout, is_on ladder

custom_components/nvidia_shield/const.py

@@ -90,6 +90,7 @@ PROTOCOL_REMOTE_KEYS = {
 # §7 channel selection: digits only, ~0.1 s apart, no ENTER by default
 # (replicates HA core androidtv_remote's verified behavior).
 CHANNEL_DIGIT_DELAY = 0.1
+CONF_CHANNEL_DIGIT_DELAY = "channel_digit_delay"
 CONF_CHANNEL_SEND_ENTER = "channel_send_enter"
 
 # Verified on-device package names (docs/RESEARCH_SHIELD.md): TiviMate does