Update landing page for v1.4.0 release

Merge pull request #5 from hamedafarag/next-1.4.0

Fix cross-connection approval and broadcast user message to observers

Bump package version to 1.4.0

Add multi-client session broadcast for real-time sync across devices

Introduce database adapter pattern with async interface for multi-DB support

Add cursor-based message pagination with lazy loading on scroll

Bump package version to 1.3.1

Merge pull request #4 from hamedafarag/next-1.3.1

Revamp landing page SEO, structured data, and OG card

Add settingSources to all SDK query options for hooks support

Add CNAME for custom domain configuration

Create CNAME

Delete CNAME

Create CNAME