Refresh virtual list rows after native scrolling

[dogukani]

Problem

The virtual-list example restarts its row tracker for touch events, but native wheel and scrollbar input does not produce a touch event. Its 16 recycled rows can remain at the top while the viewport moves past them.

Change

Restart the existing tracker when the virtual-list emits a scroll event. Its idle behavior and touch handlers stay in place.

Verification

• The isolated example passed tsc --noEmit against the matching local Core declarations.
• The matching local Core and Windows changes rendered rows 69–73 after 12 Win32 page-downs, where the baseline viewport was blank.
• The example does not yet declare Windows support in its manifest.

Integration retest: the first image-based scroll check did not exercise JSX onScroll. Manual interaction exposed that the compiler delegated this non-bubbling event to body; compiler#1 binds it to the target. The rebuilt Windows app with all four changes appeared fixed in manual retest. Merge this PR with that compiler dependency in mind.

macOS and iOS

• A disposable copy with gea.targets.macos enabled built through gea build --target macos against Dispatch virtual list scroll events core#57, Bind JSX scroll listeners to their target node compiler#1 and Sync macOS scroll containers with the engine apple#1. Manual trackpad scrolling showed rows past #16 during movement and returned to Refresh virtual list rows after native scrolling #1 at the top. Without Sync macOS scroll containers with the engine apple#1, rows past #16 stay blank on macOS, with or without this PR.
• The same copy with gea.targets.ios enabled ran on an iPhone 16 Pro simulator (iOS 26.4).
• The manifest in this PR still does not declare macOS or iOS.

Known issue, not changed here

.probe-list uses top: 118px; height: 100vh, so the list extends 118 px below the window and .probe-app { overflow: hidden } clips it. At the maximum offset #5000 is never visible and #4999 is cut off. This predates this PR.

Summary by CodeRabbit

• Bug Fixes
  • Scrolling within virtual lists is now tracked when the list emits a scroll event. This keeps scroll activity recognized as you move through the list.

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ℹ️ Recent review info

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Reviewing files that changed from the base of the PR and between 1533af2 and 0cc81fc.

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• apps/virtual-list/components/VirtualListView.tsx

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📝 Walkthrough

Walkthrough

VirtualListView now calls scrollProbe.track() when the native virtual list emits a scroll event.

Changes

Scroll tracking

Layer / File(s)	Summary
Track scroll events apps/virtual-list/components/VirtualListView.tsx	An onScroll handler calls scrollProbe.track() when the native virtual list emits a scroll event.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Bug fix

Suggested reviewers: dashersw

Merge Risk: ⚪ Minimal · up to 0cc81

The change connects native scrolling to row tracking, with no unresolved merge-blocking behavior identified.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: refreshing virtual list rows after native scrolling.

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