## What kind of change does this PR introduce? UI polish for split buttons (primary action + dropdown chevron). Follow-up to #49055. ## What is the current behavior? The focus ring sits above the neighbouring half, but the inner edge stays square, so the ring has two sharp corners at the join. ## What is the new behavior? On keyboard focus, the squared-off edge uses a slight radius so the ring matches the outer corners more closely. Resting state is unchanged. Split-button callsites now share the same join classes as the design-system example. | Before | After | | --- | --- | | <img width="1030" height="296" alt="43471" src="https://github.com/user-attachments/assets/9df3bd72-c7ac-4419-ae18-a7e649dc2d66" /> | <img width="1056" height="276" alt="CleanShot 2026-08-17 at 10 45 09@2x" src="https://github.com/user-attachments/assets/52e8a4dc-9c52-45ce-b4d0-f0e7b1b75935" /> | ## To test Tab to each half (labelled button, then chevron). Inner corners of the focus ring should be slightly rounded, not square. 1. [Split with dropdown](https://design-system-git-fix-split-button-focus-radius-supabase.vercel.app/design-system/docs/components/button#split-with-dropdown) (no login) 2. [Access Tokens](https://studio-staging-git-fix-split-button-focus-radius-supabase.vercel.app/dashboard/account/tokens) → Generate new token 3. Any project on [studio staging](https://studio-staging-git-fix-split-button-focus-radius-supabase.vercel.app/dashboard/_/settings/general) → Settings → General → Restart project <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit - **Accessibility** - Added accessible labels to dropdown and export controls. - Improved keyboard-focus visibility, layering, and rounded edge treatment across joined buttons and menus. - Removed misleading or redundant screen-reader text and titles. - **Bug Fixes** - Prevented split-button controls from shrinking or displaying awkward borders and corners. - Refined hover and focus behavior for action buttons throughout settings, database, storage, account, and documentation interfaces. - **Documentation** - Clarified guidance for using overflow menus and responsive split-button actions. <!-- end of auto-generated comment: release notes by coderabbit.ai -->
Supabase Design System
Design resources for building consistent user experiences at Supabase.
Getting started
First, make a copy of .env.local.example and name it env.local. Then install any required packages and start the development server:
cd apps/design-system
pnpm i
pnpm dev
The dev command runs both the Next.js development server and Contentlayer concurrently, which is recommended for most development workflows.
Alternative commands
You can also run the development server and content watcher separately:
# Run only the Next.js development server
pnpm dev:next
# Run only the content watcher (in a separate terminal shell)
pnpm dev:content
Or run the development server from the root directory:
pnpm dev:design-system
To run both the development server and content watcher from the root directory, you can use:
# Run the development server
pnpm dev:design-system
# Run the content watcher (in a separate terminal shell)
pnpm --filter=design-system dev:content
Open http://localhost:3003 in your browser to see the result.
Watching for MDX changes
The dev command automatically watches for changes to MDX files with hot reload. If you're running the pnpm dev:next separately, you'll need to run pnpm dev:content in a separate terminal shell to watch for content changes.
Adding components
The design system references components rather than housing them. That’s an important distinction to make, as everything that follows here is about the documentation of components. You can add or edit components in one of these two places:
packages/ui: basic UI componentspackages/ui-patterns: components which are built using NPM libraries or amalgamations of components frompatterns/ui
There are several parts of this design system that need to be manually updated after components have been added or removed (from documentation). These include:
config/docs.ts: list of components in the sidebarcontent/docs: the actual component documentationregistry/examples.ts: list of example componentsregistry/fragments.ts: list of fragment componentsregistry/charts.ts: list of chart componentsregistry/default/example/*: the actual example components
You will need to rebuild the design system’s registry after making new additions:
cd apps/design-system
pnpm build:registry