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Miguel Ángel
b3c43e2480
* feat(cli): add normalize-audio to match one clip's loudness to another Measures two authored `<audio>` clips with FFmpeg's integrated EBU R128 loudness and writes the target's matching `data-volume`, leaving the reference untouched. The measurement is bounded to the window the composition actually plays. `data-end` bounds a clip's timeline window just as `data-duration` does, and `-ss`/`-t` belong before `-i`: after it they bound the OUTPUT, and with `-f null` there is none, so ebur128 keeps integrating past the clip. On a fixture whose played window is -61.8 LUFS inside a file that measures -27.9 whole, either mistake reports a loudness the composition never plays and "corrects" an already-matched clip by tens of dB. Two EBU R128 passes run between reading the composition and writing it, each bounded only by a two-minute timeout, and the skill docs tell agents to keep Studio open meanwhile — so the attribute patch is re-applied to a fresh read and written through a temp file and a rename. Under `--json` the failures are documents too: an agent doing `JSON.parse(stdout)` on a bare error line throws. A pair needing more than the +12 dB ceiling has a source-file problem rather than a mixer one — mixer gain raises the noise floor with the signal — so the refusal names the remedy. * fix(cli): validate --tolerance before paying for the measurement Each EBU R128 pass is bounded at 120s and normalize-audio runs two, so parsing the argument afterwards made a typo'd --tolerance cost both of them before failing on something that was wrong from the start. Not pinned by a test: the ordering is internal to the command and neither it nor the parser is exported, so covering it would mean restructuring for a spy rather than asserting the behaviour. * docs(cli): restore the blank line between the preview and normalize-audio sections Lost when I resolved the rebase conflict against the background-preview docs by hand instead of letting the formatter near it. oxfmt --check failed on the one file, which fails Preflight — and because preview-parity needs Preflight it skipped, and the preview-regression gate fails closed on a skip, so a missing newline read as a preview defect. The quieter half: the same needs chain meant the required Test context was never created at that head. Not failing — absent, so there was no test signal at all on the PR.