ci: run the Android mobile web e2e tests on an emulator

[plum117]

What

• New workflow android emulator: an Android 15 emulator (API 35, google_apis, x86_64, KVM) in the GitHub runner, with reactivecircus/android-emulator-runner v2.38.0, Appium 3.8.0 and UiAutomator2 8.7.0. It runs pnpm test.local.emus.web 3 times: a warm-up (the full page test only; its result and files are not kept), a setup run that saves the baselines, and a compare run that compares with them (a missing baseline fails). If the setup run fails, the job stops and the compare run does not happen. The image is google_apis: with a Play Store image, Chrome can update itself during the run; without a Play Store account, Chrome stays the same.
• The local Android configs take the AVD name and the Android version from ANDROID_AVD / ANDROID_PLATFORM_VERSION (the defaults do not change).
• AGENTS.md and the verify skill describe the new workflow and the env vars.
• The LambdaTest Android jobs stay.

Test

• Run 37947405491: warm-up 1 passing, setup run 7 passing, compare run 7 passing; the job took 7 min 40 s.
• Why the warm-up: in the first session after the boot, a native screenshot can still show the frame before a scroll, so the full page baseline was stitched wrong (the scroll positions were exact). In 6 CI jobs, 2 of 3 failed without a warm-up and 0 of 3 with one.

🤖 Generated with Claude Code

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Latest commit: 67ef5f4

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[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge; the previous cleanup finding is fixed and no new blocking issues were found.

Summary

Adds Android mobile web tests on a GitHub-hosted emulator.

• Android mobile web tests now run on a GitHub emulator.

Diagram

%%{init: {'theme': 'neutral'}}%%
flowchart TD
  A[Build and install Appium] --> B[Start Android emulator]
  B --> C[Start Appium and warm up]
  C --> D[Discard warm-up images]
  D --> E[Save baselines]
  E --> F[Compare screenshots]
  F --> G[Stop Appium and clean up crash handlers]

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