af60719b

By: Michael Lynch <git@mtlynch.io>

Simplify login POST test to verify handler redirect behavior

The test was exercising dev-mode creator logic (LoginConfirmPath +
magiclogin.NewSender) rather than the handler's own behavior. Replace
with a simple mock that returns a fixed redirect path and verify the
handler issues a 303 to it.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
configuredevShellbackendbackend-devcheck-bashcheck-frontendcheck-go-formattingcheck-go-test-packagescheck-trailing-newlinecheck-trailing-whitespacediagramdocker-imagee2e-testsgo-testsimport-from-tinybeanslint-sqllittle-momentslittle-moments-devx86_64-linux