fix(reboot): fallback post reboot readiness readback

apps/api/tests/test_reboot_auto_recovery_slo_scorecard_api.py

@@ -476,6 +476,31 @@ def test_reboot_auto_recovery_slo_scorecard_overlays_prometheus_runtime_metrics(
     )
 
 
+def test_reboot_auto_recovery_slo_scorecard_keeps_service_backup_ready_after_live_stockplatform_ok():
+    payload = load_latest_reboot_auto_recovery_slo_scorecard(
+        prometheus_metric_readback=PROMETHEUS_RUNTIME_READBACK
+    )
+
+    reboot_slo_scorecard.apply_stockplatform_runtime_readback(
+        payload,
+        _stockplatform_runtime_ready(),
+    )
+
+    service_data_backup = payload["controlled_service_data_backup_readback"]
+    assert service_data_backup["service_green"] is True
+    assert service_data_backup["backup_core_green"] is True
+    assert service_data_backup["product_data_green"] is True
+    assert service_data_backup["post_start_blocked"] == 0
+    assert service_data_backup["blocking_fields"] == []
+    assert service_data_backup["status"] == "ready_service_data_backup_green"
+    assert service_data_backup["can_clear_service_data_backup_blockers"] is True
+    assert payload["rollups"]["controlled_service_data_backup_blocker_count"] == 0
+    assert (
+        payload["rollups"]["controlled_service_data_backup_readback_status"]
+        == "ready_service_data_backup_green"
+    )
+
+
 def test_reboot_auto_recovery_slo_scorecard_keeps_prometheus_source_missing_when_source_control_missing(
     tmp_path,
 ):