nntrivi2001 5a793e70cc fix(test): stop lane-runtime leaking a live server on every run ...

The two `upLane qc option` tests booted a real stack and then only released
the slot. `downLane` locates a service's pid file through the lane's slot
directory, so releasing the slot first orphaned the child with nothing left
able to reach it — one `python3 -m http.server` survived every run, holding
a port from a pool that is only ten wide. Thirteen had accumulated; the
eleventh run onwards fails with EPORTBUSY in whichever test boots next,
which reads as an unrelated flake.

Both tests now stop the stack before releasing the slot, and assert the port
went quiet — so a teardown that breaks again fails here rather than leaking
into the next run. A suite-level `after` covers the case a test throws
before its own teardown; it runs before SUITE_ROOT is removed, since the pid
files it needs live inside it.

2026-08-07 10:01:01 +07:00

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