Function toggleFavorite

packages/app-core/src/lib/vault-layout.ts:567–571

(favorites: string[], key: string)

/** Toggle a favorite key, returning the next list (added at the end, or removed). */
export function toggleFavorite(favorites: string[], key: string): string[] {
  return favorites.includes(key)
    ? favorites.filter((f) => f !== key)
    : [...favorites, key]
}

/** Rewrite a note favorite when its path changes (rename or move). */
export function rewriteFavoriteNotePath(