Windows a master (~12s/50% hop), CLAP-embeds each window (new sample_semantics.
embed_audio_arrays seam), runs the emotion_ontology kernel per window → (valence,
arousal, top-emotion) series; median-smooths, relabels from the smoothed circumplex
point, fuses short runs into emotion SECTIONS. Emits frames+sections+summary JSON —
the continuous-V/A + discrete-scene lane hexa wants. Validated on Bohemian Rhapsody:
caught the warm-intro → energetic-middle → tense rock-peak (A+0.77) → calm-outro arc.
