As a session closes the relay ends its subscriptions one at a time, so a moment after
its last media subscription ended and before its receipts or events ones did is time
on no media track, class 8. Under load this happened in 1 of 64 runs (76 us, 2.3 ms
into the close) and failed the test's assumption that there is none. The test now
requires no time above layer 0 and class-8 time only within a session's close, and
reports each session's spans on failure; the README says how a closing session is
classed.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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