Function detectMagicDocHeader

src/services/MagicDocs/magicDocs.ts:52–81

(
  content: string,
)

 * Returns an object with title and optional instructions, or null if not a magic doc
 */
export function detectMagicDocHeader(
  content: string,
): { title: string; instructions?: string } | null {
  const match = content.match(MAGIC_DOC_HEADER_PATTERN)
  if (!match || !match[1]) {
    return null
  }

  const title = match[1].trim()

  // Look for italics on the next line after the header (allow one optional blank line)
  const headerEndIndex = match.index! + match[0].length
  const afterHeader = content.slice(headerEndIndex)
  // Match: newline, optional blank line, then content line
  const nextLineMatch = afterHeader.match(/^\s*\n(?:\s*\n)?(.+?)(?:\n|$)/)

  if (nextLineMatch && nextLineMatch[1]) {
    const nextLine = nextLineMatch[1]
    const italicsMatch = nextLine.match(ITALICS_PATTERN)
    if (italicsMatch && italicsMatch[1]) {
      const instructions = italicsMatch[1].trim()
      return {
        title,
        instructions,
      }
    }
  }

  return { title }
}

/**
 * Register a file as a Magic Doc when it's read