Seven per-case tests collapsed to two: one per behaviour class (our own
close reasons → copy, server reasons verbatim; mic DOMException → recorder
copy, non-mic failures untouched). Source is byte-identical to the
contributor commit. Dropped: the `closed`/blank-reason case, the
`close_requested` filter (pre-existing behaviour), and the per-name
DOMException matrix — the mapping table lives in `micError`, asserting one
name proves the live path routes through it.
teknium1
a40d90e9be