Wave Bed (focus mode 6): centered vertical-mirror waveform. Spectral Ribbon (shader-mode 4): paint-as-you-play GPU spectrogram with green axes + header overlay, bass-at-bottom orientation aligned to the axes, and a real-time ceiling line tracking the highest active frequency. Line Bed (shader-mode 5): wgpu line-strip waterfall with a leveled camera, B-spline-smoothed continuous curves, a primary->accent height gradient, a bottom cutoff above the player, 2x supersampling, and a sampled-texture heights feed (no vertex storage buffer, so it runs on Slint's downlevel wgpu device).
Also: Plasma reworked to be far more reactive (4 ink emitters, beat splats, faster turbulence, quicker decay); immersive song card no longer truncates the album/artist line; player heart reflects favorite state; player bar narrowed; sample-rate and bit-depth wired through for the spectral header.
cc
