Feat: UI/UX and ducking compressor

src/app/dispatch.rs

@@ -391,6 +391,8 @@ impl App {
             AppCommand::ToggleSpectrum => self.audio.config.show_spectrum = !self.audio.config.show_spectrum,
             AppCommand::ToggleLissajous => self.audio.config.show_lissajous = !self.audio.config.show_lissajous,
             AppCommand::TogglePreview => self.audio.config.show_preview = !self.audio.config.show_preview,
+            AppCommand::SetGainBoost(g) => self.audio.config.gain_boost = g,
+            AppCommand::ToggleNormalizeViz => self.audio.config.normalize_viz = !self.audio.config.normalize_viz,
             AppCommand::TogglePerformanceMode => self.ui.performance_mode = !self.ui.performance_mode,
 
             // Metrics

src/app/persistence.rs

@@ -36,6 +36,8 @@ impl App {
                 demo_index: self.ui.demo_index,
                 font: self.ui.font.clone(),
                 zoom_factor: self.ui.zoom_factor,
+                gain_boost: self.audio.config.gain_boost,
+                normalize_viz: self.audio.config.normalize_viz,
             },
             link: crate::settings::LinkSettings {
                 enabled: link.is_enabled(),