feat(ui): separate live data and lab surfaces

docs/09_OBSERVATION_SESSIONS.md

@@ -3,7 +3,8 @@
 Status: implemented for native K1 point/pose evidence and host-side camera
 archival. Valid K1 `ModelingReport` scan time, distance and speed are also
 materialized as recorded Rerun time series. Recorded spatial playback is exposed
-in the Mission Core observation workspace. The camera archive/player contract
+in **Данные → Сессии и записи**; **Наблюдение → Пространственная сцена** is
+live-only. The camera archive/player contract
 is implemented and covered by tests. TEST007 physically accepted shared-timeline
 playback of the saved cameras and point cloud. It also carries the first optional
 external-perception result projected into the same Rerun recording; older
@@ -23,9 +24,10 @@ fully usable with only their available modalities.
 3. Stop acquisition normally, or allow the local service to recover an
    unexpected interruption on its next start. Session recording is automatic;
    the disk action is not required.
-4. Open **Сохранённые сессии** in the observation header. The menu shows up to
-   100 indexed runs, their date, duration, state, modalities and
-   background preparation state.
+4. Open **Данные → Сессии и записи**. The inline archive shows up to 100
+   indexed runs, their date, duration, state, modalities and background
+   preparation state. Opening an archive never replaces the live source owned
+   by **Наблюдение**.
 5. Choose a replayable run. Opening a replay never performs conversion in the
    request. A ready recording opens immediately; otherwise the client receives
    HTTP 202, keeps the current scene mounted and polls the preparation status.
@@ -128,7 +130,8 @@ on deletion.
 The visual result is resolved by the LAB session id, so `LAB E19`, `LAB E21`
 and the derived temporal comparison `LAB E22` can coexist over `RAVNOVES00`
 without “latest accepted result” replacing an earlier experiment. The operator
-can open any row in **Сохранённые сессии** and use the same
+can open any row in **Данные → Сессии и записи** or the corresponding LAB row
+in **Тестировочный контур** and use the same
 **Объекты 2D / Сегментация / Кубы 3D** controls. First publication must also
 warm the result-specific Rerun overlay; later opens reuse that verified cache
 and do not rerun AI inference.