A cleaner, more reliable sign-in

Signing in should feel like entering a finished product, not passing through a technical checkpoint. The page now feels cleaner and more trustworthy, while the authentication path underneath it is less likely to get in the way.

Changelog

• Improved long-episode recap reliability by increasing transcript processing timeout limits.
• Improved sign-in reliability by finalizing auth-domain rollout hardening for production flows.
• Redesigned the sign-in page to look cleaner and more trustworthy.