fix(ci): stop channel timers holding vitest open

src/channels/draft-stream-loop.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, it, vi } from "vitest";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import { MAX_TIMER_TIMEOUT_MS } from "../shared/number-coercion.js";
 import { createDraftStreamLoop } from "./draft-stream-loop.js";
 
@@ -29,6 +29,14 @@ async function captureUnhandledRejections(
 }
 
 describe("createDraftStreamLoop", () => {
+  beforeEach(() => {
+    vi.useRealTimers();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
   it("contains immediate background flush rejections and preserves pending text", async () => {
     await captureUnhandledRejections(async (rejections) => {
       const error = new Error("send failed");

src/channels/typing-lifecycle.ts

@@ -33,6 +33,7 @@ export function createTypingKeepaliveLoop(params: {
     timer = setInterval(() => {
       void tick();
     }, params.intervalMs);
+    timer.unref?.();
   };
 
   const stop = () => {

src/channels/typing.ts

@@ -76,6 +76,7 @@ export function createTypingCallbacks(params: CreateTypingCallbacksParams): Typi
         fireStop();
       }
     }, maxDurationMs);
+    ttlTimer.unref?.();
   };
 
   const clearTtlTimer = () => {