Learning Journalbeginner
Week 29, 2026 — E2E stability and rich media
Tamed WebKit hydration flakiness under parallel Playwright runs and shipped a lazy video + before/after media kit.
Introduction
This week was mostly about reliability. Desktop-WebKit was timing out under parallel Playwright workers because a single dev server starved on hydration; conditional workers plus toPass + networkidle waits fixed it.
Then I built reusable media components — a facade video player and a before/after slider — and started this Knowledge Hub to keep notes like this one in public.