fix(webapp): keep a plan-limit failure from taking the Queues page down

The query-period lookup runs before the block that renders the Queues page
without metrics when ClickHouse is unavailable, so a failure reading the limit
would have cost the whole page rather than the time filter. It now falls back to
the retention cap, which is the widest window the data can cover anyway.

Author: ericallam

apps/webapp/app/components/queues/queueMetricsPeriod.server.ts

@@ -1,4 +1,5 @@
 import { getCachedLimit } from "~/services/platform.v3.server";
+import { logger } from "~/services/logger.server";
 import { QUEUE_METRICS_RETENTION_DAYS } from "./queueMetricsPeriod";
 
 /**
@@ -7,14 +8,24 @@ import { QUEUE_METRICS_RETENTION_DAYS } from "./queueMetricsPeriod";
  * and go straight to ClickHouse stay in step with the ones that don't.
  *
  * Read through the limit cache: the queues page revalidates on an interval, so this runs far more
- * often than a one-off page load.
+ * often than a one-off page load. Never throws, so a cache or platform outage costs the caller its
+ * time filter rather than the whole page: the retention cap is the widest window the data can cover
+ * anyway, and the queries stay tenant-scoped either way.
  */
 export async function queueMetricsMaxPeriodDays(organizationId: string): Promise<number> {
-  const cached = await getCachedLimit(
-    organizationId,
-    "queryPeriodDays",
-    QUEUE_METRICS_RETENTION_DAYS
-  );
-  const planPeriodDays = cached.val ?? QUEUE_METRICS_RETENTION_DAYS;
-  return Math.min(planPeriodDays, QUEUE_METRICS_RETENTION_DAYS);
+  try {
+    const cached = await getCachedLimit(
+      organizationId,
+      "queryPeriodDays",
+      QUEUE_METRICS_RETENTION_DAYS
+    );
+    const planPeriodDays = cached.val ?? QUEUE_METRICS_RETENTION_DAYS;
+    return Math.min(planPeriodDays, QUEUE_METRICS_RETENTION_DAYS);
+  } catch (error) {
+    logger.warn("Queue metrics query period limit unavailable, falling back to retention", {
+      organizationId,
+      error,
+    });
+    return QUEUE_METRICS_RETENTION_DAYS;
+  }
 }