Make large diffs open quickly and scroll as one surface (#3212)
* perf(app): virtualize large diff rendering Render bounded diff row groups through one vertical list and one horizontal surface. Bound retained list ranges when expansion grows the data set so large diffs paint promptly without sacrificing scrolling behavior. * refactor(app): normalize working tree diff options * fix(app): keep wide diff text reachable
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@@ -55,7 +55,7 @@ test("commit history shows dates and shares diff layout preferences", async ({
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await layoutToggle.click();
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await expect(layoutToggle).toHaveAccessibleName("Switch to unified diff");
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await expect(panel.getByTestId("diff-code-row-0")).toHaveCount(0);
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await expect(panel.getByTestId("diff-file-0-body")).toBeVisible();
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await expect(panel.getByTestId(/^diff-file-0-group-\d+$/).first()).toBeVisible();
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await page.getByTestId(/^workspace-commit-diff-close-/).click();
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await expect(panel).toHaveCount(0);
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