feat(config_flow): digit-delay (0.05–1.0 s, invalid input error) + optional send-enter options UI consumed by the §7 channel path; strings/README updated (P5-2.1)

custom_components/nvidia_shield/config_flow.py

@@ -13,6 +13,7 @@ from .adb_session import ensure_adb_key
 from .connection import ShieldConnectionManager
 from .const import (
     ATTR_MEDIA_DAG_INPUT_MAP,
+    CHANNEL_DIGIT_DELAY,
     CONF_ADB_COMMAND_ENABLED,
     CONF_ADB_ENABLED,
     CONF_ADB_HOST,
@@ -20,6 +21,8 @@ from .const import (
     CONF_ADB_STORE_APP_INFO,
     CONF_ANDROIDTV_ENTITY,
     CONF_APP_NAME_MAP,
+    CONF_CHANNEL_DIGIT_DELAY,
+    CONF_CHANNEL_SEND_ENTER,
     CONF_JELLYFIN_ENTITY,
     CONF_PAIRING_CODE,
     CONF_POWER_ENTITY,
@@ -497,6 +500,16 @@ class NvidiaShieldOptionsFlow(config_entries.OptionsFlow):
         """Single-page options."""
         errors = {}
         if user_input is not None:
+            # P5-2: validate the digit delay (0.05–1.0 s, §7 window)
+            delay = user_input.pop(CONF_CHANNEL_DIGIT_DELAY, None)
+            if delay is not None:
+                try:
+                    delay = float(delay)
+                except (TypeError, ValueError):
+                    errors["base"] = "invalid_digit_delay"
+                    delay = None
+                if delay is not None and not (0.05 <= delay <= 1.0):
+                    errors["base"] = "invalid_digit_delay"
             app_map_text = user_input.pop(CONF_APP_NAME_MAP, None)
             if app_map_text is None:
                 app_map = self._options.get(CONF_APP_NAME_MAP, {})
@@ -507,6 +520,8 @@ class NvidiaShieldOptionsFlow(config_entries.OptionsFlow):
                 if app_map is None:
                     errors["base"] = "invalid_app_map"
             if not errors:
+                if delay is not None:
+                    self._options[CONF_CHANNEL_DIGIT_DELAY] = delay
                 self._options.update(user_input)
                 self._options[CONF_APP_NAME_MAP] = app_map
                 return self.async_create_entry(title="", data=self._options)
@@ -537,6 +552,12 @@ class NvidiaShieldOptionsFlow(config_entries.OptionsFlow):
             recv_key = vol.Optional(CONF_RECEIVER_ENTITY, default=recv)
         schema_dict[recv_key] = sel["receiver"]
 
+        # P5-2: channel digit behavior (the user-validated §7 flow)
+        current_delay = self._options.get(CONF_CHANNEL_DIGIT_DELAY, CHANNEL_DIGIT_DELAY)
+        schema_dict[vol.Optional(CONF_CHANNEL_DIGIT_DELAY, default=current_delay)] = str
+        current_enter = self._options.get(CONF_CHANNEL_SEND_ENTER, False)
+        schema_dict[vol.Optional(CONF_CHANNEL_SEND_ENTER, default=current_enter)] = bool
+
         # P4-2a: the raw adb_command service is opt-in (default off)
         current_flag = self._options.get(CONF_ADB_COMMAND_ENABLED, False)
         schema_dict[vol.Optional(CONF_ADB_COMMAND_ENABLED, default=current_flag)] = bool