Unreleased updates

Highlights

• Update docs and dashboard branding assets.
• await changelog slug params in Next 15 page
• Add docs changelog system, Cursor changelog commands, and logo updates.
• Update docs nav and add interactive docs actions.
• default org, link key fix, Security (email vs GitHub), password reset
• Update docs, API config, Dockerfile, and add funding/export features
• Add email sign-up and sign-in to dashboard login
• Add Render blueprint and make Render primary deploy option