Fixes, readme

internal/auth/refresh.go

@@ -215,11 +215,16 @@ func (t *utlsRefreshTransport) RoundTrip(req *http.Request) (*http.Response, err
 }
 
 // StartBackgroundRefresh runs a goroutine that checks and refreshes tokens periodically.
-func StartBackgroundRefresh(pool *Pool) {
+func StartBackgroundRefresh(ctx context.Context, pool *Pool) {
 	go func() {
 		for {
-			time.Sleep(refreshInterval)
-			refreshAll(pool)
+			select {
+			case <-ctx.Done():
+				log.Printf("background refresh stopped")
+				return
+			case <-time.After(refreshInterval):
+				refreshAll(pool)
+			}
 		}
 	}()
 }