fix: resolve fs coverage test timeout due to start up pause race condition

Author: sharon77242

packages/agent/tests/argus-agent-coverage.test.ts

@@ -206,6 +206,7 @@ describe("ArgusAgent (extended coverage)", () => {
   // ── FS 'fs' event → aggregator + agent emit ───────────────────────────────
   it("should forward fs instrumentation events to agent", { timeout: 10_000 }, async () => {
     agent = await ArgusAgent.create().withFsTracing().start();
+    await sleep(50); // wait for fsTracker to resume after scan checks
 
     const fsPromise = once(agent, "fs");