Effects engine, SVG/VU/silhouette categories, pad bank, MP4 recording, dual-window UI

- Parametric effect engine: 23 shader families × palettes × variants (~2300 presets)
  with a filterable library and an effect sequence (auto-cycle by time or beat).
- Effect categories: fractals/abstract, dancing silhouettes, SVG/Image source
  (loads any SVG/image as a recolourable audio-reactive effect; 50+ bundled CC0 SVGs),
  and VU-Meter (32-band spectrum bars, analogue needle, stereo LEDs).
- Dual-window architecture: control panel + fullscreen output on an external display
  (reliable via simple-fullscreen); tabbed control UI (Audio, Effetti, Pad, Immagini,
  Testo, Registra, Schermo).
- Audio: file playback + live input + output device selection, per-band visual EQ,
  audio playlist (reorder, hotkeys, per-track play/pause, repeat).
- Pad bank: 5×4 launchpad with persistent assignments; pressing a pad stops the current.
- Overlays: slideshow images (resizable), two freely positioned/resizable logos,
  scrolling ticker text.
- MP4 recording of the composited output (visual + overlays + audio) via MediaRecorder
  + ffmpeg, with selectable aspect ratios (16:9, 9:16, 1:1, 4:3, 3:4, 21:9).
- App icon (.icns) and dock icon; author Dj LuZa.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

svg/music-player-song-svgrepo-com.svg

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Uploaded to: SVG Repo, www.svgrepo.com, Generator: SVG Repo Mixer Tools -->
+<svg fill="#000000" height="800px" width="800px" version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" 
+	 viewBox="0 0 512.002 512.002" xml:space="preserve">
+<g>
+	<g>
+		<path d="M501.969,5.636c-5.049-4.379-11.751-6.345-18.366-5.406L160.829,46.341c-11.359,1.623-19.795,11.351-19.795,22.825v92.221
+			v178.088c-13.656-7.956-29.509-12.537-46.421-12.537c-51.023,0-92.532,41.51-92.532,92.532s41.509,92.532,92.532,92.532
+			s92.532-41.51,92.532-92.532V181.383l276.664-39.524v151.506c-13.656-7.956-29.509-12.537-46.421-12.537
+			c-51.023,0-92.532,41.51-92.532,92.532s41.509,92.532,92.532,92.532c51.023,0,92.532-41.51,92.532-92.532V115.275V23.054
+			C509.918,16.37,507.018,10.015,501.969,5.636z M94.612,465.89c-25.596,0-46.421-20.825-46.421-46.421
+			c0-25.596,20.825-46.421,46.421-46.421c25.596,0,46.421,20.825,46.421,46.421C141.033,445.065,120.208,465.89,94.612,465.89z
+			 M463.808,95.279l-276.664,39.524V89.161l276.664-39.524V95.279z M417.387,419.779c-25.596,0-46.421-20.825-46.421-46.421
+			s20.825-46.421,46.421-46.421c25.596,0,46.421,20.825,46.421,46.421C463.808,398.954,442.983,419.779,417.387,419.779z"/>
+	</g>
+</g>
+</svg>