Add full online Phase1 Phase2 final graph extraction pipeline

extractors/__init__.py

@@ -1,5 +1,17 @@
 """GWAM environment graph extractors."""
 
-from realtime.gwam_realtime_env_graph import RealtimeGWAMGraphExtractor, save_realtime_graph_snapshot, to_gnn_graph
+from realtime.gwam_realtime_env_graph import (
+    RealtimeGWAMGraphExtractor,
+    Sam2ClipRealtimeFeatureBackend,
+    build_online_visual_features,
+    save_realtime_graph_snapshot,
+    to_gnn_graph,
+)
 
-__all__ = ["RealtimeGWAMGraphExtractor", "save_realtime_graph_snapshot", "to_gnn_graph"]
+__all__ = [
+    "RealtimeGWAMGraphExtractor",
+    "Sam2ClipRealtimeFeatureBackend",
+    "build_online_visual_features",
+    "save_realtime_graph_snapshot",
+    "to_gnn_graph",
+]