Cross-checks the rendered .device-badge.new count against the API's
isNew count rather than forcing a synthetic new-device scenario --
that would permanently pollute the production seen_macs table on
every test run. Full end-to-end verification (synthetic device
injected via devices-raw.json, confirmed isNew: true, confirmed 0
false positives across the other 71 real devices) was done manually
against the live deployment and cleaned up afterward; this test
guards the UI/API consistency going forward.
16/16 e2e tests green across 9 spec files.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
