riyadhafraa
a8eeae56fd
After Task #449 the sticky Notes header was still scrolling away. Root cause: `overflow-x: hidden` on `html, body` makes both elements scroll containers. Body sized itself to its content (no internal scroll happens), so a `position: sticky` descendant got scoped to a non-scrolling container and rode off-screen with the page. `overflow-x: clip` clips overflowing content the same visual way `hidden` does, but it does NOT establish a scroll container, so sticky descendants continue to resolve against the viewport and pin correctly. Changed only `artifacts/tx-os/src/index.css` (the `html, body` rule added in #449). All other rules untouched. `overflow: clip` is supported in Chrome 90+, Firefox 81+, Safari 16+.