Ryan Malloy be88ea53b7 Add signal source selector to oscilloscope hero ...

Source knob cycles through 6 tracks: the original CC-licensed
Spirals intro plus 5 N-Spheres tracks (Function, Intersect,
Attractor, Flux, Core) by Fenderson & Hansi3D.

- 48kHz FLAC conversions served via git LFS (~189MB total)
- Rotary knob with CSS custom property composable transforms
- Dynamic attribution (CC link for Spirals, album credit for N-Spheres)
- Signal selection persisted in localStorage
- Loading state overlay while buffering larger tracks
- Skin-aware labels (465: "Source", 545A: "Input")
- Keyboard accessible (Enter/Space to cycle)

2026-02-13 06:16:47 -07:00

33 MiB (Stored with Git LFS)

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