feat(ops): show worker and queue readiness

webui/tests/runtime-status.test.ts

@@ -0,0 +1,24 @@
+import assert from "node:assert/strict";
+import {
+  heartbeatAgeLabel,
+  heartbeatAgeSeconds,
+  knownMetric,
+  knownQueueDepthTotal,
+  runtimeWorkTone,
+  shouldPollRuntimeStatus
+} from "../src/features/ops/runtimeStatus";
+
+assert.equal(knownMetric(null), "unavailable");
+assert.equal(knownMetric(0), 0);
+assert.equal(knownQueueDepthTotal({ mail: null }), null);
+assert.equal(knownQueueDepthTotal({ mail: 0, calendar: 2 }), 2);
+assert.equal(runtimeWorkTone("stale"), "danger");
+assert.equal(runtimeWorkTone("disabled"), "neutral");
+assert.equal(heartbeatAgeSeconds(Date.parse("2026-08-19T12:01:00Z"), "2026-08-19T12:00:00Z"), 60);
+assert.equal(heartbeatAgeLabel(60), "1m ago");
+assert.equal(heartbeatAgeLabel(null), "unavailable");
+assert.equal(shouldPollRuntimeStatus(true, false), false);
+assert.equal(shouldPollRuntimeStatus(false, true), false);
+assert.equal(shouldPollRuntimeStatus(false, false), true);
+
+console.log("Ops runtime status and polling model tests passed.");