feat(observatory): admit canonical recorded replay

src/k1link/web/app.py

@@ -386,7 +386,11 @@ def finalized_replayable_recording_ids() -> tuple[str, ...]:
     finalized: list[str] = []
     cursor: str | None = None
     while True:
-        page = session_store.list_recent(limit=100, cursor=cursor)
+        page = session_store.list_recent(
+            limit=100,
+            cursor=cursor,
+            include_capability_projections=False,
+        )
         finalized.extend(
             summary.session_id
             for summary in page.items

src/k1link/web/session_api.py

@@ -341,10 +341,16 @@ def build_session_router(
         limit: int = Query(default=20, ge=1, le=100),
         cursor: str | None = Query(default=None, max_length=128),
         scope: Literal["all", "source", "laboratory"] = "all",
+        lab_contract: Literal["v1", "v2"] = "v1",
     ) -> dict[str, Any]:
         try:
             _refresh_catalog(catalog_refresher)
-            page = store.list_recent(limit=limit, cursor=cursor, scope=scope)
+            page = store.list_recent(
+                limit=limit,
+                cursor=cursor,
+                scope=scope,
+                include_capability_projections=lab_contract == "v2",
+            )
             return {
                 "items": [
                     {
@@ -356,7 +362,15 @@ def build_session_router(
                         "modalities": list(item.modalities),
                         "duration_seconds": item.duration_seconds or 0.0,
                         "replayable": item.replayable,
-                        **({"lab": item.lab.as_dict()} if item.lab is not None else {}),
+                        **(
+                            {
+                                "lab": item.lab.as_dict(
+                                    include_replay_capability=lab_contract == "v2"
+                                )
+                            }
+                            if item.lab is not None
+                            else {}
+                        ),
                         **(
                             {
                                 "preparation": _catalog_preparation_document(