Refactor SendingAccordion with Contact Selection & Email Placeholder

[mahid797]

Improve the “SendingAccordion” so the user can realistically pick from an existing contact list (placeholder or real) and/or manually type in email addresses. Then send them the newly created link by calling a placeholder endpoint (e.g. /api/documents/[documentId]/links/email).

Detailed Tasks

1. Fetch or Mock a Contact List

   • Possibly GET /api/contacts or GET /api/documents/[documentId]/linkVisitors for stored emails.
   • Display them in a multi-select or chips, letting the user pick multiple.

2. Manual Email Entry

   • Provide a text field for “Other Emails.”
   • The user can type comma‐separated emails. Validate them briefly if desired.

3. Send Action

   • After the link is created, call a function (e.g., handleSendInvites(linkUrl)) that does:

     await axios.post(`/api/documents/${documentId}/links/email`, {
     	linkUrl,
     	recipients: [...selectedContacts, ...parsedEmails],
     });

   • Show success, partial success, or error. The actual emailing is not yet implemented, but the UI must be functional.

4. Typed Models

   • Optionally define an InviteRecipientsPayload with linkUrl: string, recipients: string[].
   • This ensures we keep type safety if the server later implements real logic.

5. Integration

   • If the user sets sendInvites: true, we display the SendingAccordion or integrated UI.
   • If they confirm, we call the placeholder endpoint.

Acceptance Criteria

• The user can select multiple known contacts and/or manually enter emails in Other Emails.
• On “Send,” we do a (placeholder) POST request with typed data.
• Show a success or partial success message.
• The code is neatly integrated—no ephemeral logic mixing in CreateLink.tsx.
• If the server side is not yet implemented, we at least handle the success or error gracefully.

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Notes

• Keep ephemeral styling minimal—prefer sx or small local components.
• This refactoring plan ensures we fully respect the new server approach, storing only minimal visitorFields keys, using typed forms & hooks, and a robust “SendingAccordion” for invites.