程序员阿江(Relakkes) 54f3c00414 fix(desktop): stabilize chat selection references (#351)
The chat reference action was still tied too closely to message-local
mouseup timing, and the floating fixed-position control stayed inside
virtualized message DOM. In Electron Chromium that made multi-line ranges
race selection settlement and let transformed ancestors offset the button
away from the viewport position we calculated.

This reads settled document selections after pointerup/selectionchange,
portals the action to document.body, and prefers right-side placement for
multi-line selections.

Constraint: Electron Chromium selectionchange can settle after message-local mouse events
Rejected: Keep the popover inside the message node | transformed/virtualized ancestors offset fixed positioning in real browser layout
Confidence: high
Scope-risk: narrow
Directive: Keep chat selection actions portaled; do not reparent under virtualized message rows without browser-coordinate verification
Tested: cd desktop && bun run test -- src/components/chat/MessageList.test.tsx
Tested: bun run check:desktop
Tested: Playwright Chromium smoke for multi-line selection, single-line selection, and outside-click dismissal on local desktop harness
2026-06-03 11:39:18 +08:00
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