Initial commit: Discord-Claude Gateway with event-driven agent runtime

src/shutdown-handler.ts

@@ -0,0 +1,17 @@
+import type { GatewayCore } from "./gateway-core.js";
+
+export function registerShutdownHandler(gateway: GatewayCore): void {
+  let shuttingDown = false;
+
+  const handler = (signal: string) => {
+    if (shuttingDown) {
+      return;
+    }
+    shuttingDown = true;
+    console.log(`Received ${signal}, shutting down...`);
+    gateway.shutdown();
+  };
+
+  process.on("SIGTERM", () => handler("SIGTERM"));
+  process.on("SIGINT", () => handler("SIGINT"));
+}