feat(running_apps): media_dag_running_apps enrichment — TTL-capped last_known_state/last_known_title for apps without a live session (P3-3b)

tests/test_media_session.py

@@ -158,3 +158,30 @@ class TestAudioPlaybackSection:
 
     def test_empty_dump(self):
         assert parse_audio_playback("") == []
+
+
+def test_running_apps_last_known_enrichment():
+    """P3-3b: apps without a live session carry their TTL-capped last-known state."""
+    from nsh.ha_adb_common import MediaSessionInfo, running_apps_from_tasks
+
+    tasks = [
+        {"package": "ar.tvplayer.tv"},
+        {"package": "com.netflix.ninja"},
+    ]
+    sessions = [MediaSessionInfo(package="com.netflix.ninja", playing=True, title="Movie")]
+    last_known = {
+        "ar.tvplayer.tv": MediaSessionInfo(
+            package="ar.tvplayer.tv", playing=False, paused=True, title="Last show"
+        )
+    }
+
+    apps = running_apps_from_tasks(tasks, sessions, foreground_package=None, last_known=last_known)
+
+    tivi = next(a for a in apps if a["package"] == "ar.tvplayer.tv")
+    netflix = next(a for a in apps if a["package"] == "com.netflix.ninja")
+
+    assert tivi["state"] == "running"  # no live session
+    assert tivi["last_known_state"] == "paused"
+    assert tivi["last_known_title"] == "Last show"
+    assert "last_known_state" not in netflix  # live session enriched instead
+    assert netflix["state"] == "playing"