The provider sent PUT /api/auth/me/locale on mount and on every switch,
signed in or not. Signed out the route answers 401, the once-per-tab
marker was never set, and every signed-out page load repeated the
refused write.
The mirror moves out of the provider into LocaleServerSyncBridge, which
watches the account payload without fetching it and writes only once an
account is known. The choice made on the sign-in page therefore reaches
the account right after signing in, and the marker is keyed on the
account as well as the language, so another account signing in on the
same tab is written for too. The browser test stub no longer treats the
PUT as ambient, which is what lets its test see a stray write.
Type into the form, press Save and read the request body off the fetch
boundary: blood pressure as one batch, a weight typed in lb stored in
kg, a decimal comma, glucose typed in mmol/L stored in mg/dL with its
meal context, a sleep typed as 7:30 stored as 450 minutes. Native
required validation, the pending state, a refused write's localised
message, the module-off type list, the last-used type and the menu's
Reset are covered too.
The unit-label and glucose-unit markup tests are deleted; their source
pins are replaced by the wire assertions. The module-types file keeps
its pure ownership checks and drops its render.
The browser helper gains a Date-only clock pin, clears localStorage
between tests, carries an envelope's meta, and answers the providers'
locale mirror without counting it as the component's request.
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