feat: implement real-time dashboard updates via WebSockets

shared/lib/events.ts

@@ -0,0 +1,16 @@
+import { EventEmitter } from "node:events";
+
+/**
+ * Global system event bus for cross-module communication.
+ * Used primarily for real-time dashboard updates.
+ */
+class SystemEventEmitter extends EventEmitter { }
+
+export const systemEvents = new SystemEventEmitter();
+
+export const EVENTS = {
+    DASHBOARD: {
+        STATS_UPDATE: "dashboard:stats_update",
+        NEW_EVENT: "dashboard:new_event",
+    }
+} as const;