Archipelago — open-source initial import

aiui/packages/app/src/utils/wavlakeGenres.ts

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+/** Map common genre names to Wavlake chart genre param (top-level from list.csv) */
+export const WAVLAKE_GENRE_MAP: Record<string, string> = {
+  'math rock': 'alternative',
+  'indie rock': 'alternative',
+  'post-rock': 'alternative',
+  'prog rock': 'rock',
+  'progressive rock': 'rock',
+  'rock': 'rock',
+  'alternative': 'alternative',
+  'emo': 'alternative',
+  'post-hardcore': 'alternative',
+  'hip-hop': 'hip-hop/rap',
+  'hip hop': 'hip-hop/rap',
+  'rap': 'hip-hop/rap',
+  'electronic': 'electronic',
+  'ambient': 'electronic',
+  'house': 'dance/edm',
+  'techno': 'dance/edm',
+  'jazz': 'jazz',
+  'blues': 'blues',
+  'folk': 'singer/songwriter',
+  'country': 'country',
+  'classical': 'classical',
+  'pop': 'pop',
+  'r&b': 'r&b/soul',
+  'soul': 'r&b/soul',
+  'reggae': 'reggae',
+  'world': 'world',
+}
+
+export function mapToWavlakeGenre(genres: string[]): string | null {
+  for (const g of genres) {
+    const key = g.toLowerCase().trim()
+    const mapped = WAVLAKE_GENRE_MAP[key]
+    if (mapped) return mapped
+  }
+  return null
+}