[nikvakhrameev]

Motivation

Selecting text inside the All Comments modal closes the modal.

Reproduction:

1. Open a diff with at least one comment and open All Comments.
2. Press the mouse inside a comment body, drag to select some text, release.
3. The modal navigates to that thread and closes; the selection is lost.

Browsers fire click after any mousedown/mouseup pair inside the same element, including a drag that only selects text. Each thread card in CommentsListModal handles click by calling onNavigate(thread) and onClose(), so a text selection is treated exactly like a click on the card.

Expected: selecting text inside the modal leaves it open with the selection intact, while a plain click still navigates to the thread and closes the modal.

Implementation notes

• src/client/utils/domUtils.ts: add hasActiveTextSelection(), which reports whether document.getSelection() is non-collapsed and non-empty.
• src/client/components/CommentsListModal.tsx: in the card onClick, return early when hasActiveTextSelection() is true (after e.stopPropagation(), so the click still does not fall through to the backdrop). No other behaviour changes; setSelectedIndex and handleThreadClick run as before for a regular click.
• src/client/components/CommentsListModal.test.tsx: add a regression test next to navigates when clicking a thread. It builds a real Range over a comment body (happy-dom implements Selection/Range), fires click, and asserts onNavigate/onClose are not called; it then clears the selection, clicks again, and asserts the normal navigate-and-close path still works. The test fails on main and passes with this change.

Manual verification

• pnpm check, pnpm format, pnpm knip, pnpm test (861 passed, 2 skipped), pnpm build all pass locally; lefthook pre-commit and pre-push hooks ran and passed.
• pnpm dev, open All Comments, drag-select text inside a comment body and release: the modal stays open and the text stays selected.
• Click a comment card without dragging: the modal navigates to the thread and closes as before.
• Clicking the backdrop or the close button still closes the modal.

UI changes

None visible. No new elements or styling; only the click handling changes, so no screenshots or docs/images updates are needed.

🤖 Generated with Claude Code