The Enter-key handlers were expression-bodied arrows assigned to DOM on…
properties: `(e) => e.key === "Enter" && submit()` returns false for every
other key, and an on… handler returning false cancels the event, so the
server URL ("Use my phone") and both master-password fields accepted no input.
Use block bodies, and add scripts/check-handlers.mjs (run by npm run build)
to fail the build on handlers that can return false.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
