v0.1.1: Forward media_position_updated_at through DAG now_playing

So ha-media-zone's card can interpolate the playhead smoothly between
server polls instead of snapping once every 10-30s.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "ha-nvidia-shield"
-version = "0.1.0"
+version = "0.1.1"
 description = "Home Assistant custom integration for NVIDIA Shield TV via ADB + Android TV Remote"
 readme = "README.md"
 requires-python = ">=3.12"