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/src/lib/constants.ts

@@ -0,0 +1,84 @@
+export const COLORS = {
+  bgDark: "#0a0118",
+  bgPurple: "#1a0533",
+  bgIndigo: "#2d1b69",
+  accent: "#FFD700",
+  accentWarm: "#FFA500",
+  accentRose: "#FF6B9D",
+  text: "#FFFFFF",
+  textMuted: "rgba(255,255,255,0.6)",
+  staffLine: "rgba(255,255,255,0.35)",
+  cardBg: "rgba(255,255,255,0.06)",
+  cardBorder: "rgba(255,255,255,0.12)",
+  noteGlow: "rgba(255,215,0,0.4)",
+};
+
+export const NOTES_ITALIAN = [
+  { name: "DO", offset: 6 },
+  { name: "RE", offset: 5 },
+  { name: "MI", offset: 4 },
+  { name: "FA", offset: 3.5 },
+  { name: "SOL", offset: 2.5 },
+  { name: "LA", offset: 1.5 },
+  { name: "SI", offset: 1 },
+  { name: "DO", offset: 0.5 },
+] as const;
+
+export const MUSIC_SYMBOLS = [
+  "\u266A",
+  "\u266B",
+  "\u266C",
+  "\u2669",
+  "\u{1D160}",
+  "\u{1D15E}",
+];
+
+export const FEATURES = [
+  {
+    icon: "\uD83C\uDFAF",
+    title: "Accordatore",
+    desc: "Rileva l'intonazione in tempo reale",
+    color: "#4ECDC4",
+  },
+  {
+    icon: "\uD83C\uDFB5",
+    title: "Pratica Guidata",
+    desc: "Segui le sequenze di note passo dopo passo",
+    color: "#FFD93D",
+  },
+  {
+    icon: "\uD83D\uDCC4",
+    title: "Spartiti",
+    desc: "Libreria con oltre 190 brani classici",
+    color: "#6C5CE7",
+  },
+  {
+    icon: "\uD83D\uDCF8",
+    title: "Scansione AI",
+    desc: "Riconosci spartiti con intelligenza artificiale",
+    color: "#FF6B9D",
+  },
+] as const;
+
+export const INSTRUMENTS = [
+  { name: "Violino", emoji: "\uD83C\uDFBB", range: "G3-E7" },
+  { name: "Viola", emoji: "\uD83C\uDFBB", range: "C3-A6" },
+  { name: "Violoncello", emoji: "\uD83C\uDFBB", range: "C2-C6" },
+  { name: "Pianoforte", emoji: "\uD83C\uDFB9", range: "A0-C8" },
+  { name: "Chitarra", emoji: "\uD83C\uDFB8", range: "E2-E6" },
+  { name: "Voce", emoji: "\uD83C\uDFA4", range: "D2-D6" },
+] as const;
+
+export const SCENE_TIMING = {
+  intro: { start: 0, end: 210 },
+  staff: { start: 180, end: 450 },
+  features: { start: 420, end: 720 },
+  outro: { start: 690, end: 900 },
+} as const;
+
+export const VIDEO_CONFIG = {
+  durationInFrames: 900,
+  fps: 30,
+  width: 1920,
+  height: 1080,
+} as const;