restructure pages dir

frontend/src/pages/alertHistory/AlertHistory.jsx

@@ -0,0 +1,67 @@
+import { useState, useEffect } from "react";
+import { getAlertEvents } from "../../api/alertEvents";
+import "./AlertHistory.css";
+
+export default function AlertHistory() {
+  const [alertEvents, setAlertEvents] = useState([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState(null);
+
+  useEffect(() => {
+    async function fetchAlertEvents() {
+      try {
+        setLoading(true);
+        const data = await getAlertEvents();
+        setAlertEvents(data);
+      } catch (err) {
+        setError(err.message);
+        console.error("Failed to fetch alert events:", err);
+      } finally {
+        setLoading(false);
+      }
+    }
+
+    fetchAlertEvents();
+  }, []);
+
+  if (loading) {
+    return <div className="page">Loading...</div>;
+  }
+
+  if (error) {
+    return (
+      <div className="page text-error">Error: {error}</div>
+    );
+  }
+
+  return (
+    <div className="page">
+      <h1>Recent Alert Events</h1>
+
+      {alertEvents.length === 0 ? (
+        <p className="text-dimmed">No alerts yet</p>
+      ) : (
+        <ul className="list-unstyled">
+          {alertEvents.map((event) => (
+            <li key={event.id} className="alert-history__item">
+              <div className="mb-sm">{event.message}</div>
+              {event.address_label && (
+                <div className="text-sm text-dimmed">
+                  Address: {event.address_label}
+                </div>
+              )}
+              <small className="text-muted">
+                {formatTimestamp(event.timestamp)}
+              </small>
+            </li>
+          ))}
+        </ul>
+      )}
+    </div>
+  );
+}
+
+function formatTimestamp(timestamp) {
+  const date = new Date(timestamp);
+  return date.toLocaleString();
+}