Contact and account data model improvements

Contact and account data model improvements: Contacts now support multiple email addresses and multi-account associations. Accounts can be associated with multiple domains, enabling more flexible representations of customer relationships.

Chat improvements: The agent now has a much better understanding of how artifacts have been edited in chat, resulting in more reliable and higher quality responses. Improved markdown formatting for chat responses and made chat titles editable for easier recall.

Smaller changes:

• Granola MCP now works more efficiently in workflows
• PDF exports from artifacts generated by the agent now consolidate into a continuous page