feat: lighten skip countdown and fill toward expiry

Checks/app-startup.py

@@ -332,11 +332,6 @@ def check_cli_instances(root, app, fixtures):
         print("PASS actual resolved CLI handoff: two isolated GUI episodes, authenticated encrypted HLS, independent default VTT, v2 progress and quit")
 
     def check_stream_queue_instance():
-        # DEBUG-queue-startup: distinguish queue startup from ordinary empty startup.
-        invoke(["--new-instance", "--no-config"])
-        empty_states = wait_states(1, lambda _: True, "diagnostic empty startup creates its window")
-        quit_instance(next(iter(empty_states)), 1)
-        wait_states(0, lambda _: True, "diagnostic empty startup quits")
         session = (root / "stream-queue-session").resolve()
         session.mkdir(mode=0o700)
         paths = [session / "first.jsonl", session / "second.jsonl"]