Add Playwright visual regression snapshot tests - #674
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Adds pixel-diff visual regression coverage for the landing page across the core responsive breakpoints (Mobile 375px, Tablet 768px, Desktop 1440px) using Playwright's built-in screenshot comparison. Animations and transitions are frozen before each capture to keep diffs deterministic across runs. Configures a 2% max pixel-diff ratio tolerance in playwright.config.ts, and adds test:visual / test:visual:update npm scripts for generating and refreshing baselines locally. CI now caches Playwright's browser binaries and persists visual baseline snapshots as a keyed cache artifact (auto-created on first run, diffed against on subsequent runs), with diff artifacts uploaded on failure for debugging. Closes StellarFlow-Network#603
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Summary
e2e/visual.spec.ts: full-page pixel-diff screenshot tests of the landing page at the three core responsive breakpoints (Mobile 375px, Tablet 768px, Desktop 1440px), with animations/transitions frozen before each capture for deterministic diffs.expect.toHaveScreenshotinplaywright.config.tswith a 2% max pixel-diff ratio tolerance.test:e2e,test:visual, andtest:visual:updatenpm scripts (the latter for regenerating baselines locally)..github/workflows/e2e.ymlto cache Playwright's browser binaries and to persist visual baseline snapshots via a keyedactions/cacheentry — first CI run auto-creates baselines, subsequent runs diff against them — plus uploads diff artifacts on failure for debugging.Closes #603
Notes
mainindependent of this change (ErrorBoundaryis not exported fromsrc/components/ui/index.ts, referenced bysrc/app/DashboardInteractive.tsx), which also blocksnpm run buildin the existing e2e CI job. That's a pre-existing issue outside the scope of 🧪 Visual-Regression | Automated Playwright Visual Regression Snapshot Tests #603 — worth a follow-up fix so this workflow (and the new visual tests) can actually run in CI.npm run test:visual:updateonce the build issue above is resolved.Test plan
npx eslint e2e/visual.spec.ts playwright.config.tspassesnpx tsc --noEmitshows no new type errorsnpm run test:visuallocally once the unrelated build failure noted above is fixed