Fold Session/Mix hero glyphs into the reusable accent-icon treatment so they reach
the glyph (beating .mud-secondary-text) green-accent in both themes; drop the dead
wrapper white rule and the redundant dark-only hero override. Light pixel-identical.
Mute --deepdrft-panel-ground; WAVE scroll MudSlider back to RadialKnob; new DDIcons Waveform/WaveformFilled glyph for the waveform toggle; strong green ON-state chip vs dim OFF; refresh popover pointer-capture comment.
Build WaveformVisualizerControlPopover pairing the lava-lamp trigger with the eight-knob WaveformVisualizerControls panel; style to the NowPlaying Hero look from tokens. Panel chrome scoped to the popover mount via a PanelChrome flag; Mix's inline mount unchanged.