The panel carries the shared .card class, and '.card { position: relative }'
loads after the popover stylesheet, so equal specificity let bundle order
strip the panel's position: fixed — it then flowed inside the documents
viewer and rendered clipped at the bottom-right of the viewport, far from
the selection. A .selection-comment-panel.card rule restores fixed
positioning immune to order; the panel's left is now a width-aware clamp
(no half-offscreen composer near viewport edges), top is clamped near the
bottom, and the textarea focuses with preventScroll so opening the
composer no longer scrolls the selected content out of view.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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