0.5.593
Opening a share link while signed in showed the account button as "Sign in", as if the session had been lost. It had not: the viewer simply did not start the cloud session. It does now, so your account stays visible in a shared chart; the viewer still writes nothing to your saved charts.
The web app now keeps a running measurement of every frame (event handling, data tick, drains, persistence, render), wasm memory, and how long each save takes and how many writes it makes. A frame over 100 ms leaves one line in the browser console with the breakdown, and a summary is printed every ten seconds. Add ?perf=1 to the address to see the numbers live in the corner of the page. This is groundwork for the intermittent stutter some browsers show; nothing about how the chart behaves has changed.