Log NWS alerts to history regardless of push subscribers

The alert history log was only populated inside the subscriber loop,
so it stayed empty when no push subscriptions existed. Now the cron
always checks and logs active NWS alerts for the dashboard location
before the subscriber early-return.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/server.js

@@ -734,6 +734,22 @@ async function alertWatcherCron() {
     } catch {}
   }
 
+  // ── Log NWS alerts for the dashboard location regardless of subscribers ───────
+  const dashLat = dashAuth?.stationLat;
+  const dashLon = dashAuth?.stationLon;
+  if (dashLat != null) {
+    const dashAlertData = await fetch(`${base}/api/alerts?lat=${dashLat}&lon=${dashLon}`)
+      .then(r => r.json()).catch(() => ({ features: [] }));
+    for (const a of dashAlertData.features || []) {
+      const alertId = a.id || a.properties?.id;
+      if (alertId && !loggedAlertIds.has(alertId)) {
+        loggedAlertIds.add(alertId);
+        const p = a.properties || {};
+        recordAlertLog({ type: 'nws', alertId, event: p.event, headline: p.headline, effective: p.effective, expires: p.expires, lat: dashLat, lon: dashLon });
+      }
+    }
+  }
+
   if (!pushSubscriptions.length) return;
 
   for (const sub of [...pushSubscriptions]) {