store only status-change events; UI client-side polling refactor

web/src/app/api/poll/incidents/route.ts

@@ -0,0 +1,19 @@
+import { NextResponse } from "next/server";
+
+import { loadIncidents } from "@/lib/loaders";
+import { jsonError } from "@/lib/poll-response";
+
+export const dynamic = "force-dynamic";
+
+export async function GET(request: Request) {
+  const url = new URL(request.url);
+  const stateParam = url.searchParams.get("state");
+  const state = stateParam === "open" || stateParam === "resolved" ? stateParam : undefined;
+
+  try {
+    const data = await loadIncidents(state);
+    return NextResponse.json(data);
+  } catch (e) {
+    return jsonError(e);
+  }
+}