feat(viewer): add recorded point colors and trajectory follow

tests/test_rrd_export.py

@@ -37,6 +37,9 @@ from k1link.device_plugins.xgrids_k1.rrd_export import (
     export_k1mqtt_to_rrd,
     recorded_blueprint_rrd,
 )
+from k1link.viewer.recorded import (
+    RECORDED_SPATIAL_FOLLOW_VIEW_ID,
+)
 from k1link.viewer.recorded import (
     recorded_blueprint as viewer_recorded_blueprint,
 )
@@ -450,6 +453,40 @@ def test_viewer_blueprint_reset_is_bounded_and_recreates_render_views() -> None:
     assert perception_behavior.visible.as_arrow_array().to_pylist() == [False]
 
 
+def test_recorded_follow_mode_tracks_sensor_pose_with_an_independent_orbital_eye() -> None:
+    normal = viewer_recorded_blueprint(
+        RerunSceneSettings(),
+        include_initial_playback_state=False,
+    )
+    followed = viewer_recorded_blueprint(
+        RerunSceneSettings(),
+        include_initial_playback_state=False,
+        follow_trajectory=True,
+    )
+    followed_again = viewer_recorded_blueprint(
+        RerunSceneSettings(show_grid=False),
+        include_initial_playback_state=False,
+        follow_trajectory=True,
+    )
+
+    normal_view = normal.root_container.contents[0]
+    followed_view = followed.root_container.contents[0]
+    followed_eye = followed_view.properties["EyeControls3D"]
+    followed_components = {
+        str(batch.component_descriptor()): batch.as_arrow_array().to_pylist()
+        for batch in followed_eye.as_component_batches()
+    }
+
+    assert "EyeControls3D" not in normal_view.properties
+    assert followed_view.id == RECORDED_SPATIAL_FOLLOW_VIEW_ID
+    assert followed_again.root_container.contents[0].id == RECORDED_SPATIAL_FOLLOW_VIEW_ID
+    assert followed_view.id != normal_view.id
+    assert followed_components == {
+        "EyeControls3D:kind": [2],
+        "EyeControls3D:tracking_entity": ["/world/sensor_pose"],
+    }
+
+
 def test_recorded_blueprint_layer_updates_preserve_store_until_explicit_reset(
     monkeypatch: pytest.MonkeyPatch,
 ) -> None: