look, I know I misspelled "locater" in the code comment, but it's easier to acknowledge that here in this commit message than it is to push a new commit with all the test/approval machinery in github.
Scripts for running playwright tests in a Docker container that has
chromium and webkit preinstalled. Includes a basic smoke test for
authentication so that we can be sure the test rig is working
end-to-end. Wiring this up in CI will be in an upcoming PR.
