[JavierRibaldelRio]

What happens

Both About UI tests fail in CI on expect(locator('#contributors li').first()).toBeVisible() — "element(s) not found" — while passing locally.

5029cf1b stopped committing electron-app/src/about/credits.snapshot.json and electron-app/renderer/about/avatars/, since they are contributor photographs and per-person commit counts in a public repository, and made them build-time artefacts. Nothing in the E2E job builds them: e2e-tests.yaml builds the four renderers and runs Playwright, never build:credits. So a fresh clone has no snapshot, getAboutCredits() returns { contributors: [] } and About renders an empty list. It still passes on a developer's machine, where a previous packaging run left both on disk.

What this changes

pnpm --dir e2e build now seeds the credits through e2e/scripts/about-credits.mjs:

• three members with distinct descending commit counts, a GitHub login each, and real PNG avatars encoded at seed time, so nothing binary is committed and nothing is fetched;
• a generated snapshot already on disk is left untouched, so local runs keep exercising the real credits;
• it is replaced only when it lists nobody, is unreadable, or references an avatar file that is gone — each of which fails the same assertions.

The suite deliberately does not call the GitHub API: the first About test asserts the screen is entirely network-free, and paging the commits API on every pull request would be slow and red for reasons unrelated to the change under test.

Validation

• node e2e/scripts/about-credits.mjs + getAboutCredits(): 3 contributors, counts [128, 57, 9] descending, every avatarUrl matching the renderer's ./avatars/<id>.png pattern and present on disk, name === login so about:open-profile resolves to https://github.com/e2e-ada.
• Avatars decode as real images (96×96, 8-bit RGB), which the test requires (naturalWidth > 0).
• Seeding is idempotent, and reseeds on an empty, corrupt or image-less snapshot; a generated snapshot (including a contributor whose avatar download failed) is preserved.
• prettier --check clean. The full Playwright run is this PR's own E2E job: it needs Electron on a display, which the environment this was written in does not have.