- output callback reuses a scratch buffer instead of allocating per
call (real-time rule)
- P1 consumption test probes real callback delivery and skips on
headless/background sessions (CoreAudio starts the stream but never
runs it outside the GUI session), with a 30s poll for slow HAL
startup; restores the manager singleton state afterwards
- waveform: drop leftover DBG-WF debug prints
Mike-Solar
d460d57805