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* fix(audio): remove hidden reverb from the mastering pre-stage — reverb is preset-declared only (#TBD) Field report (Discord): baked-in echo/reverb on some voices. apply_mastering() hardcoded a Reverb that ran on every non-raw synthesis before the user's preset chain — broadcast shipped reverb it never declared, podcast broke its "no reverb" promise, cinematic/warm got doubled reverb. The mastering pre-stage is now data-driven (MASTERING_CHAIN: highpass + compressor, same params as before) and reverb-free; cinematic/warm keep their user-chosen reverb. Regression tests pin the contract, incl. a burst-then- silence echo-tail check and pedalboard-missing passthrough. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * docs(changelog): hidden mastering reverb entry (#986) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: mergetest <test@local> Co-authored-by: Claude Fable 5 <noreply@anthropic.com>