Roving focus, Home/End, wrap, toggle mode, disabled and the chosen
segment's fill are now asserted through key presses and computed styles
instead of markup greps. The static render test is deleted; its two
source sweeps move to segmented-single-implementation.test.ts.
The browser setup sets the default theme class so colour tokens
resolve, and pre-bundles the browser files' dependencies so a cold
cache does not reload the page mid-run.
Run *.browser.test.tsx in headless Chromium through the Playwright
provider. The shared helper in tests/browser/ mounts the app's own
providers, stubs only the fetch boundary, and shims next/navigation
onto the page's real location and history.
Marc-André Bombeck