FUE-T03: correct meters POST docstring (no recomputed_periods field) and inaccurate test comments

openapi/openapi.yaml

@@ -1125,11 +1125,13 @@ paths:
 
         records from that point forward are re-judged via ``recompute_range`` to
 
-        reflect the new meter attribution.  The response includes the count of
+        reflect the new meter attribution.  The recompute is transparent — the
 
-        recomputed periods in ``recomputed_periods`` (not part of ``MeterResponse``
+        response body is the created meter (``MeterResponse``) only and does **not**
 
-        — the recompute is transparent; callers should re-fetch costs if needed).'
+        include a recompute count; callers should re-fetch costs if they need the
+
+        updated totals.'
       operationId: declare_energy_meter_api_energy_meters_post
       parameters:
       - name: X-CSRF-Token