The Study stage's right column has a drag handle (mouse, arrow keys, double-click
or Home to reset); the width is remembered per device. The app now starts on the
user's chosen home page from the first render instead of showing My Studies
first. Tests wait on page headings so a lazily loaded page can't be confused
with hidden text from the previous one.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
