WirePlumber's node.stream.restore-target remembers where each stream last
played and restores it, ignoring the default sink, so vois.rs output kept
going to the headphones. setup() now installs a wireplumber.conf.d override
(restore-target/props = false) and restarts WirePlumber on first use.
Also: virtual mic setup runs before any device queries, and keep_others_off
pulls our own stream back onto vois.rs if it drifts.
loki5512344
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