The NPB Large dock idled at ~2.5% CPU paused: the visualizer gates on
visibility only, so the FFT producer kept re-transforming the stale
ring buffer at 30fps and the drain timer kept churning the 28 bar
models. Producer now parks when enabled-but-paused (same bounded
200ms park_timeout shape as the existing disabled-park; the atomic is
a lone Relaxed store, submit path untouched); the drain early-returns
when not playing and unparks the producer on the resume edge, so
fresh bars land in <100ms. The paused flag is stored at every
playing-state flip: toggle, track meta seed, the poll loop dirty-push
(catch-all for MPRIS/tray/hotkeys/QConnect within one 450ms tick),
the cast poll while casting, stop-after, queue end and the
unavailable-skip halts. Bars freeze at their last values while
paused; immersive freezes too — intended. Legacy Tauri tree's tap
literal gained the field to keep compiling.
cc
vicrodh
f5ed2ec1fe