App: Next.js upgrade, and a changelog link where you'd look for it

In this release2

1. ImprovedSystem

   Next.js upgraded to 16.3.4

   Routine framework upgrade: Next.js 16.2.10 to 16.3.4, with eslint-config-next and @next/third-parties bumped to the matching version since they ship in lockstep with Next.js itself.

   What we changed:

   • Nothing in application code needed to change. A pre-upgrade typecheck baseline was taken first (89 pre-existing, unrelated type errors already in the app) and compared against the post-upgrade typecheck, confirming this bump introduces zero new errors.
   • A full production build (next build) was run against the upgraded version to confirm it compiles and generates every route cleanly before this shipped.
   • The rest of the app's dependencies (Radix UI, Stripe.js, react-hook-form and about 30 others) are queued for their own upgrade pass; rizzui and @tanstack/react-table are held back deliberately since both shipped major versions with real breaking changes across the app's tables and UI components that need a dedicated migration.
2. NewSystem

   A Changelog link on the sign-in page and in the profile menu

   Until now the changelog timeline only had one entry point: the sidebar, which you only see once you're signed in and past onboarding.

   What we changed:

   • The sign-in page footer, alongside Help, Privacy and Terms, now has a Changelog link.
   • The profile dropdown in the header, next to Account Settings and Notifications, now has one too.
   • Both open the changelog in a new tab, so signing in or checking what's new never navigates you away from what you were doing.