fix(tests): reset telemetry singleton in afterEach to prevent cross-test fetch leakage

The telemetry test calls initTelemetry() which sets _enabled=true in the
singleton module. Without resetting, logWarn/logError in subsequent test files
(e.g. hetzner-cov) trigger unexpected fetch() calls via captureWarning/captureError,
shifting mock callCount counters and causing test failures.

Add resetTelemetry() export and call it in telemetry test afterEach.

Agent: test-engineer
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@openrouter/spawn",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "type": "module",
   "bin": {
     "spawn": "cli.js"

packages/cli/src/__tests__/telemetry.test.ts

@@ -125,7 +125,12 @@ describe("telemetry", () => {
     global.fetch = fetchMock;
   });
 
-  afterEach(() => {
+  afterEach(async () => {
+    // Reset telemetry singleton state to prevent cross-test leakage.
+    // initTelemetry() sets _enabled=true which persists across test files,
+    // causing logWarn/logError in other tests to fire unexpected fetch calls.
+    const mod = await import("../shared/telemetry.js");
+    mod.resetTelemetry();
     global.fetch = originalFetch;
     if (originalTelemetry !== undefined) {
       process.env.SPAWN_TELEMETRY = originalTelemetry;

packages/cli/src/shared/telemetry.ts

@@ -238,6 +238,14 @@ export function captureError(type: string, err: unknown): void {
   });
 }
 
+/** Reset telemetry state. Used by tests to prevent cross-test leakage. */
+export function resetTelemetry(): void {
+  _enabled = false;
+  _userId = "";
+  _sessionId = "";
+  _context = {};
+}
+
 // ── Send ────────────────────────────────────────────────────────────────────
 
 /** Send a single event to PostHog immediately. Fire-and-forget. */