Extend the per-channel makeup range floor from -12 to -24 dB so makeup can
attenuate as well as boost, giving more post-compressor gain-staging headroom.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Stage 6 begins. Add lock-free Meters (atomics shared audio->GUI) with a
peak-with-decay ballistic, published once per block and gated on the editor
being open. Editor draws a per-channel level + gain-reduction meter panel and
a ceiling lamp fed by the output limiter. Compressor/Limiter expose
gain_reduction_db() for this.
Also add a smoothed per-channel pre-gain applied before each compressor (and
before the All compressor), driving the signal into compression and on into
the limiter for a compressed semi-distortion. Pairs with makeup for full
per-channel input/output gain-staging. Compressor DSP untouched; 16 tests pass.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Move parameter structs, defaults, and build_settings into src/params.rs;
move the egui editor into src/editor.rs. lib.rs now holds only the plugin
shell, DSP wiring, and process(). No behavior change (16/16 tests pass).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Mikkeli Matlock