[Jeehut]

Summary

Handle errors inside the three discarded throwing tasks in AsyncButton and WebView. This removes three NoUseUnstructuredThrowingTask diagnostics without changing public APIs.

Feedback reset / delayed scroll
  success → keep the existing reset or scroll
  CancellationError → return
  other error → log with private error details

Local catches keep each failure next to its operation. A shared helper would add an abstraction for only three sites. Existing task ownership and the outer catchError callback remain unchanged.

Evidence

Before: the baseline build completed with three target diagnostics.
After: the build completed with zero target diagnostics. The existing suite passed: 37 tests in 13 suites.

Independent runtime checks on macOS 27.2 confirmed success/failure feedback and its approximately two-second reset. Each failure activation called catchError once. Removing a cooperative running button delivered cancellation once. A local page scrolled to Y=600. A page whose scrollBy throws stayed alive and logged its error as <private>.

These are post-change captures, not a historical visual comparison. The before/after evidence is the compiler diagnostic count.

Build and tests ran sequentially through simlease, using swift build / swift test --build-system swiftbuild --jobs 1 with an isolated scratch path. Reviewed and exercised commit: 81178270920902dd27bf707d9644af70751a7426.

Larger-font rendering was attempted but not verified. Not checked: internal timer/scroll-task cancellation, keyboard/VoiceOver, other platforms, or release readiness. The repository has no CODING_STANDARDS.md; code review used the available workspace and Swift rules. No new regression tests were added. No browser rendering check ran. Review: Code ✓ · Design – (no visual redesign) · QA ✓ (specified macOS flows only).

Merge Danger

Door two-way · Blast Radius local (feedback timers and delayed page scroll).
Public APIs and task ownership are unchanged. The detector reported exit 0. It assumes a local radius because the repository has no BlastRadius.md.