chore: update weather alert state [skip ci]

data/state.json

@@ -1,19 +1,23 @@
 {
   "sent_alerts": {
-    "precipitation:2026-04-18": {
-      "dedup_key": "precipitation:2026-04-18",
+    "precipitation:2026-04-25": {
+      "dedup_key": "precipitation:2026-04-25",
       "alert_type": "precipitation",
-      "sent_at": "2026-04-18T20:01:03.890744",
-      "forecast_hour": "2026-04-18-22"
-    },
-    "precipitation:2026-04-19": {
-      "dedup_key": "precipitation:2026-04-19",
-      "alert_type": "precipitation",
-      "sent_at": "2026-04-19T00:01:03.956129",
-      "forecast_hour": "2026-04-19-01"
+      "sent_at": "2026-04-25T04:01:04.951776",
+      "forecast_hour": "2026-04-25-08"
+    }
+  },
+  "last_updated": "2026-04-25T04:01:04.951822",
+  "previous_alert_snapshots": {
+    "precipitation": {
+      "alert_type": "precipitation",
+      "extreme_value": 63.0,
+      "threshold": 60,
+      "start_time": "2026-04-25-08",
+      "end_time": "2026-04-25-08",
+      "hour_count": 1,
+      "captured_at": "2026-04-25T04:01:04.951801"
     }
   },
-  "last_updated": "2026-04-25T00:01:04.778806",
-  "previous_alert_snapshots": {},
   "last_ai_summary_sent": null
 }