Naiyuan Qing 97755ae45d feat(editor): add link hover card with URL preview and actions ...

Show a floating card on link hover with truncated URL, Copy and Open
buttons. Uses @floating-ui/dom computePosition portaled to body
(escapes overflow:hidden). 300ms show delay, 150ms hide delay with
card hover support.

- New link-hover-card.tsx with useLinkHover hook + LinkHoverCard
- Integrated in ContentEditor (disabled when BubbleMenu active)
- Integrated in ReadonlyContent (always active)
- Styled with popover design tokens (matches bubble-menu)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-14 14:53:32 +08:00

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