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* feat(studio): typed audio values, clip fades, audible video drops Audio rows in the media inspector (Volume, Speed, Media start) take a typed value: click the readout, type "-6 dB", "1.5x" or "2.5s", Enter. Speed presets are hidden on <audio> clips. Clip-edge fades: data-fade-in / data-fade-out in seconds, honoured by the preview runtime (per-tick gain), the render mixer (afade after volume) and Studio (Fade in / Fade out rows, and drag dots at the top corners of audio clips and audible videos). Linear on both sides so preview and render agree; fades that outrun the clip scale to meet inside it. Dropped videos with an audio stream now land with data-has-audio="true" instead of muted, so the mixer keeps their sound. The media metadata endpoint reports hasAudio from the ffprobe call it already makes. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> * fix(audio): one owner for fades, dB, and afade-after-volume Illegal fade values become no-fade at fadeGain; typed inspector input still returns null so the readout stays red. Master and group mixes share one filter chain with volume then afade. Fade-out stays anchored to the trimmed clip end. * fix(studio): share audio helpers and bound typed media values * fix(studio): reserve sibling fade duration when editing --------- Co-authored-by: Jake Moran <jakemoran2011@gmail.com> Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com> Co-authored-by: Miguel Angel Simon Sierra <miguel.sierra@heygen.com>