docs(api): keep the labs category status rule in the contract

The description of a labs category lost the status rule and the
sentence that a client never rebuilds the category, the order or the
status. Both are back as they were, with one line added: a client
that shows only the members matching a filter may summarise that
subset by the same rule.

docs/api/openapi.yaml

@@ -77272,9 +77272,11 @@ components:
       description: "One category of the labs list, resolved by the server. `key` is opaque: a catalog panel key,
         `custom:<hash>` for the person's own panel, or `other`; it carries no user text and is stable, so a client may
         key collapse state on it. `label` is rendered as given (a catalog panel in the caller's locale, the person's own
-        spelling, or the localised \"Other\"). `markerKeys` names the `markers[].key` values in the category. `counts`
-        and `status` describe the full category without filters; a client renders these values directly when unfiltered,
-        and may summarize the visible row subset client-side while filters are active."
+        spelling, or the localised \"Other\"). `markerKeys` names the `markers[].key` values in the category. `status`
+        combines the members' newest readings: `above` when any is above its range, else `below` when any is below, else
+        `in-range` when any was assessed, else `unknown`. A client renders these values and never rebuilds the category,
+        the order or the status. A client that shows only the members matching a filter may summarise that subset by the
+        same rule; without a filter it shows `counts` and `status` as sent."
     LabOverviewCategoryCounts:
       type: object
       properties:
@@ -77300,8 +77302,7 @@ components:
         - above
         - unknown
       additionalProperties: false
-      description: How many members' newest readings are in range, below, above, or unassessed (qualitative, or no range) for
-        the full category without filters.
+      description: How many members' newest readings are in range, below, above, or unassessed (qualitative, or no range).
     GetLabResultResponse:
       type: object
       properties: