feat(meta_quest_camera): streaming MJPEG → MP4 (no on-device disk)

examples/meta_quest/record.py

@@ -46,7 +46,12 @@
 
 import syncfield as sf
 import syncfield.viewer
-from syncfield.adapters import MetaQuestCameraStream, MetaQuestHandStream
+from syncfield.adapters import (
+    BLEImuGenericStream,
+    MetaQuestCameraStream,
+    MetaQuestHandStream,
+)
+from syncfield.adapters.ble_imu_profiles import WIT_WT901BLE_200HZ
 
 # Quest 3 IPv4 — copy from the Quest sender app's HUD ("Host" line) or
 # check Settings → Wi-Fi → <network> → Details → IP address. Must be on
@@ -80,4 +85,32 @@
     resolution=(1280, 720),
 ))
 
+# Wrist IMUs — same two WT901BLE units used in examples/iphone_mac_webcam.
+# Both advertise as "WT901BLE68", distinguished only by BLE address. Resolved
+# via active-scan on 2026-04-14 in the iphone_mac_webcam example.
+session.add(BLEImuGenericStream(
+    "wrist_left_imu",
+    profile=WIT_WT901BLE_200HZ,
+    address="5622CCC4-A621-96DC-A7B5-E7650370E8A3",
+))
+session.add(BLEImuGenericStream(
+    "wrist_right_imu",
+    profile=WIT_WT901BLE_200HZ,
+    address="6E22ED0E-72CD-0175-6F29-0BA8D502CBAB",
+))
+
+# Elbow IMUs — two additional WT901BLE units. Resolved via active-scan on
+# 2026-04-14. Left/right assignment is arbitrary; swap if the side labels
+# don't match what's actually strapped on.
+session.add(BLEImuGenericStream(
+    "elbow_left_imu",
+    profile=WIT_WT901BLE_200HZ,
+    address="1CD2DCDE-CE20-905E-7D66-66E20FB01AB6",
+))
+session.add(BLEImuGenericStream(
+    "elbow_right_imu",
+    profile=WIT_WT901BLE_200HZ,
+    address="C7CA16B4-AFF6-CC54-C657-83836E96979A",
+))
+
 syncfield.viewer.launch(session)

src/syncfield/adapters/meta_quest_camera/__init__.py

@@ -1,9 +1,15 @@
-"""Meta Quest 3 stereo passthrough camera adapter.
+"""Meta Quest 3 stereo passthrough camera adapter (streaming-only).
 
-Public entry point is :class:`MetaQuestCameraStream`. Internal collaborators
-(``QuestHttpClient``, ``MjpegPreviewConsumer``, ``TimestampTailReader``,
-``RecordingFilePuller``) live in sibling modules and are composed by the
-stream class.
+Public entry point is :class:`MetaQuestCameraStream`. Internal
+collaborators live in sibling modules and are composed by the stream
+class:
+
+* :mod:`.preview` — :class:`MjpegPreviewConsumer` that pulls one
+  ``/preview/{eye}`` MJPEG stream per eye.
+* :mod:`.mp4_writer` — :class:`StreamingVideoRecorder` that mux-passes
+  each JPEG into an MP4 container without re-encoding.
+* :mod:`.http_client` — :class:`QuestHttpClient` for the small set of
+  control-plane calls (``/status``, ``/tracker/target``).
 """
 
 from syncfield.adapters.meta_quest_camera.stream import MetaQuestCameraStream