feat(config_flow,media_player): apps name/icon map editor in the options flow (package=name per line, invalid input error) + app_name resolves through CONF_APP_NAME_MAP after the entity/push tiers (P4-1b)

custom_components/nvidia_shield/media_player.py

@@ -48,6 +48,7 @@ from .const import (
     CHANNEL_DIGIT_DELAY,
     CONF_ADB_STORE_APP_INFO,
     CONF_ANDROIDTV_ENTITY,
+    CONF_APP_NAME_MAP,
     CONF_CHANNEL_DIGIT_DELAY,
     CONF_CHANNEL_SEND_ENTER,
     CONF_JELLYFIN_ENTITY,
@@ -511,16 +512,28 @@ class NvidiaShieldMediaPlayer(MediaPlayerEntity):
             return self._manager.current_app
         return None
 
+    @property
+    def _app_name_map(self) -> dict:
+        """The user's apps name/icon map (P4-1 options editor)."""
+        return self._entry.options.get(CONF_APP_NAME_MAP) or {}
+
     @property
     def app_name(self):
+        """Entity tier → protocol-push tier → the P4-1 apps map.
+
+        The map (package → friendly name) resolves after the entity and
+        push tiers; unmapped packages stay raw (icons follow HA's media
+        image lookup by name).
+        """
         atv = self._read(self._androidtv_entity) if self._androidtv_entity else None
         if atv is not None:
             app_name = atv.attributes.get("app_name")
             if app_name:
                 return app_name
         if self._manager is not None:
-            # Name resolution is deferred app-map work; the package is truth.
-            return self._manager.current_app
+            package = self._manager.current_app
+            if package:
+                return self._app_name_map.get(package, package)
         return None
 
     @property