POST /getLinkedInPost

• Auth: header x-api-key: <API_KEY>
• Body:
  • businessId (string, required)
  • documentId (string, required)
• Behavior: fetch a company LinkedIn post by documentId from businesses/{businessId}/companyLinkedInPosts/{documentId}.
• Responses:
  • 200: { id, data }
  • 400: validation errors
  • 403: invalid API key
  • 404: not found
  • 500: internal error

Source: apps/functions/getLinkedInPost.js.