push architecture slice 1: core event bus + /api/events SSE channel (notify->fetch infra, no consumers yet)

app/api/events/route.ts

@@ -0,0 +1,15 @@
+/**
+ * THE NOTIFICATION CHANNEL ROUTE (push-architecture slice 1, 2026-10-02):
+ * one SSE connection per open window over the core event bus — the
+ * endpoint every future consumer (chat view, sidebar, activity dock)
+ * subscribes to as the polls retire. The response plumbing lives in the
+ * server seam (events-stream.ts); the framework route stays a thin
+ * wrapper (the import law; tests drive the seam directly).
+ */
+import { eventsResponse } from "@/src/server";
+
+export const dynamic = "force-dynamic";
+
+export function GET(): Response {
+	return eventsResponse();
+}