Transition bumper test page
Selected Bumper
Signal Wipe
Dark-to-paper pass with BB mark and fine rail.
Internal Link Test
Uses selected bumper.
Pick an option first. These links then show that option before navigation.
Exclusion Test
Should stay native.
These should not trigger the bumper.
Route expectation after staging setup: /page-transition-bumper-test/. This page is for choosing the direction only; it is not a sitewide rollout.