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Xuanru Li
8e340d220e
* feat(cli): audio answers beats, downbeats, bpm, sections and describe through a provider ladder Beats and downbeats try api, apple-mu, beat-this, then signal; sections try api, apple-mu, then signal; describe tries api, then apple-sound. bpm is read off whichever provider placed the beats. Each provider says whether it can run here and why not, and the ladder warns when it passes one over. The signal rung is a TypeScript tracker: log-band spectral flux, autocorrelation tempo with a log-normal prior, Ellis dynamic-programming beats with a windowed local tempo, a low-band bar phase, and Foote novelty sections snapped to beats. It reports no steady beat when the onsets do not repeat. The api rung posts the audio to HYPERFRAMES_AUDIO_API_URL with HYPERFRAMES_AUDIO_API_KEY and moves each answered time onto the nearest signal beat within a quarter beat, reporting what moved and what did not. beat-this runs Beat This! from a configured Python and local weights and never downloads. apple-sound runs macOS's sound classifier through a Swift helper. apple-mu reports that Music Understanding needs macOS 27. words are no longer accepted: they come from hyperframes transcribe. * docs(cli): audio's beats, downbeats, bpm, sections, describe and their provider ladder * fix(cli): remove redundant audio context comment * fix(core): keep flat audio novelty in one section * fix(cli): honor BPM provider pins before analysis