Initial commit: InTono — app KMP per l'apprendimento musicale

App Kotlin Multiplatform (Android/iOS/Desktop) con Compose Multiplatform:
controllo intonazione (YIN), pratica guidata, metronomo, ear training,
sfide, scansione spartiti via AI, spartiti bundled e pentagramma con
glifi tipografici, travature, battute e spaziatura proporzionale.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

video/.agents/skills/remotion-best-practices/rules/assets.md

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+---
+name: assets
+description: Importing images, videos, audio, and fonts into Remotion
+metadata:
+  tags: assets, staticFile, images, fonts, public
+---
+
+# Importing assets in Remotion
+
+## The public folder
+
+Place assets in the `public/` folder at your project root.
+
+## Using staticFile()
+
+You MUST use `staticFile()` to reference files from the `public/` folder:
+
+```tsx
+import { Img, staticFile } from "remotion";
+
+export const MyComposition = () => {
+  return <Img src={staticFile("logo.png")} />;
+};
+```
+
+The function returns an encoded URL that works correctly when deploying to subdirectories.
+
+## Using with components
+
+**Images:**
+
+```tsx
+import { Img, staticFile } from "remotion";
+
+<Img src={staticFile("photo.png")} />;
+```
+
+**Videos:**
+
+```tsx
+import { Video } from "@remotion/media";
+import { staticFile } from "remotion";
+
+<Video src={staticFile("clip.mp4")} />;
+```
+
+**Audio:**
+
+```tsx
+import { Audio } from "@remotion/media";
+import { staticFile } from "remotion";
+
+<Audio src={staticFile("music.mp3")} />;
+```
+
+**Fonts:**
+
+```tsx
+import { staticFile } from "remotion";
+
+const fontFamily = new FontFace("MyFont", `url(${staticFile("font.woff2")})`);
+await fontFamily.load();
+document.fonts.add(fontFamily);
+```
+
+## Remote URLs
+
+Remote URLs can be used directly without `staticFile()`:
+
+```tsx
+<Img src="https://example.com/image.png" />
+<Video src="https://remotion.media/video.mp4" />
+```
+
+## Important notes
+
+- Remotion components (`<Img>`, `<Video>`, `<Audio>`) ensure assets are fully loaded before rendering
+- Special characters in filenames (`#`, `?`, `&`) are automatically encoded