test(e2e): configure the e2e host from verify launch extras

[mikepitre]

What & why

• A UI test needs to start the :e2e test app in a known state, which means a chosen Clerk instance and a chosen user. With this PR one am start sets both through string extras. Every launch opens on the app's one home, and a test taps from there to the view it needs, as a user does.
• This PR sits on feat(ui): add stable test tags to the prebuilt Compose views #1040. feat(verify): add the end-to-end test package and the verify-clerk-android skill #1046, on top of it, adds the tests that use it and their CLI, in e2e-tests/, and the verify-clerk-android skill, which is the instructions that point an agent at them. test(e2e): configure E2EHost from verify launch arguments clerk-ios#623 is the same change for the iOS test app.
• The home shows the outcome of a flow the way a normal app does, so a test asserts on what a user sees. With an active session it shows UserButton, "Signed in as ", the user ID, the session ID, OrganizationSwitcher, and "Sign out". Otherwise it shows "Signed out" and three buttons. A pending session counts as signed out.
• "Sign in" opens AuthView with a close button. "Sign in full screen" shows AuthView(isDismissible = false) as the whole content of the activity until Clerk.isAuthFlowCompleteFlow reports the flow complete, and it shows the task when the session is pending on one. "Custom sign-in" opens a small phone-code form built on Clerk.auth.signInWithOtp, because the SDK has no view for a custom flow.
• The app draws nothing on or around an SDK view. The diff touches only e2e/.

Extra	What it does
verifyPublishableKey	The key for Clerk.initialize. Without it the app uses BuildConfig.E2E_CLERK_PUBLISHABLE_KEY.
verifyAuthMode	The mode of both AuthViews that the home opens, signIn or signUp. Any other value is sign-in-or-up.
verifyInitialIdentifier	The AuthView behind "Sign in full screen" gets it as initialIdentifier.
verifySignInTicket	The app calls Clerk.auth.signInWithTicket once after Clerk loads, and shows a spinner until it returns.
verifyStorageScope	When the scope differs from the last launch, the app deletes Clerk's preferences file before Clerk.initialize.
verifyLogLevel	debug turns on the SDK's debug logging. It is off otherwise, because network logs can carry session tokens.
verifyRunId, verifyLaunchId	Copied into the app's log lines.

• The app writes one logcat line under the tag ClerkVerify each time its screen, user, session, or launch error changes. No test reads these lines.
• A launch with no verify* extra still shows the home that the Trailblaze trail drives. That code is now in TrailApp.kt, and ci: run the end-to-end tests in the release workflow, and remove the Trailblaze suite #1052 removes it.

To try it, set E2E_CLERK_PUBLISHABLE_KEY in gradle.properties, then:

$ ./gradlew :e2e:installDebug
$ adb shell am start -S -n com.clerk.e2e/.MainActivity --es verifyAuthMode signUp

Then tap "Sign in full screen" on the home.

What to focus on

• The Trailblaze trail has not run against this branch, and the release workflow still runs it until ci: run the end-to-end tests in the release workflow, and remove the Trailblaze suite #1052 lands.
• Clerk now initializes when the first activity is created, in E2EApplication.verifyHost, because the extras are on the activity's intent. The app reads the extras once per process, so a second am start without -S keeps the first configuration.
• The home closes the AuthView behind "Sign in" only in onDismiss and onAuthComplete. The custom form leaves only when its own setActive call succeeds. A test that completes a sign-in there therefore fails if the callback never runs.
• The home's buttons are clickable Text nodes (TextAction). A Material Button puts its role on a child that covers the whole button, and UI Automator drivers refuse to tap such a node.
• ./gradlew spotlessCheck detekt :e2e:lintDebug :e2e:testDebugUnitTest :e2e:assembleDebug passes at this head. :e2e has 21 unit tests, 8 of them in VerifyLaunchConfigTest.
• The 19 end-to-end tests of feat(verify): add the end-to-end test package and the verify-clerk-android skill #1046 drive this app on an emulator. ci: run the end-to-end tests in the release workflow, and remove the Trailblaze suite #1052 runs them on CI and has the result.

Screenshots / video

None attached.

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📝 Walkthrough

Walkthrough

The E2E module adds launch configuration parsing and a Clerk-backed verification host. The host publishes launch, environment, identity, session, ticket, and error state. The activity renders screens from that state. Tests cover configuration parsing and state serialization.

Changes

E2E verification host

Layer / File(s)	Summary
Launch configuration and state protocol e2e/src/main/java/com/clerk/e2e/VerifyLaunchConfig.kt, e2e/src/main/java/com/clerk/e2e/VerifyState.kt, e2e/src/test/java/com/clerk/e2e/VerifyLaunchConfigTest.kt, e2e/src/test/java/com/clerk/e2e/VerifyStateTest.kt, e2e/build.gradle.kts	Launch arguments are parsed into screen, auth mode, ticket, and logging configuration. Publishable keys are validated. Verification state is serialized as a JSON line. Tests cover parsing and serialized output.
Clerk-backed verification state e2e/src/main/java/com/clerk/e2e/E2EApplication.kt	E2EApplication creates and caches a verification host. The host initializes Clerk for valid configuration, tracks environment loading and ticket sign-in, and exposes verification state.
Host screen rendering e2e/src/main/java/com/clerk/e2e/MainActivity.kt	MainActivity passes the host to E2EHost, which renders configured screens from host state. The signed-in home adds UserButton and OrganizationSwitcher; the sign-out button receives a test tag.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant MainActivity
  participant E2EApplication
  participant VerifyLaunchConfig
  participant VerifyHost
  participant Clerk
  participant E2EHost
  MainActivity->>E2EApplication: verifyHost(activity)
  E2EApplication->>VerifyLaunchConfig: parse launch extras and fallback key
  E2EApplication->>VerifyHost: create or return cached host
  VerifyHost->>Clerk: initialize when the publishable key is valid
  VerifyHost->>VerifyHost: wait for environment and process ticket sign-in
  VerifyHost-->>E2EHost: expose VerifyState through state flow

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Merge Risk: 🟡 Moderate · up to 0e7ff

Repeated E2E launches while the app process remains alive can use the first launch’s configuration instead of the requested scenario, leading device tests to exercise the wrong screen or session. A fresh process is a workaround, but the launch lifecycle should be addressed or explicitly accepted before merge.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 35 functions across 7 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Description check		The description includes the required What & why, What to focus on, and Screenshots / video sections. It explains the launch extras, behavior, risks, testing status, and known limitations.
Title check		The title clearly and concisely describes the main change: configuring the E2E host from verify launch extras.

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Inline comments:
Review comments at @e2e/src/main/java/com/clerk/e2e/E2EApplication.kt:
- Around line 37-47: Update E2EApplication.verifyHost and the MainActivity
intent handling so each launch’s verify extras are applied instead of retaining
the first VerifyHost. Handle both onCreate and onNewIntent through one update
path, replacing the host when configuration changes, cancelling the old host’s
work, and preserving storage-scope reset; use Clerk.switchConfiguration when
Clerk’s configuration must change rather than reinitializing it.

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Inline comments:
Review comments at @e2e/src/main/java/com/clerk/e2e/MainActivity.kt:
- Around line 82-89: Update the host-level screen routing around `state.screen`
in `MainActivity` so dismissing a launch-configured profile returns to `E2EApp`
(Home). Replace the no-op `onDismiss` callbacks in `UserProfileView` and
`OrganizationProfileView` with the same host-level fallback, and ensure the
fallback also handles the user or organization disappearing while either profile
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