The Playwright CDP click latency occasionally pushed past vi.waitFor's 1000ms
deadline, making the "opens a confirm dialog" test flaky. Switched to
btn.dispatchEvent(new MouseEvent(...)) — the same synchronous in-browser pattern
already used in GeschichteEditor.svelte.spec.ts.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>