Add E2E GitHub Workflow and Fix Test Selector

[google-labs-jules]

This PR adds a GitHub Actions workflow for running E2E tests and updates the Playwright test spec to handle UI changes.

1. Workflow (.github/workflows/e2e.yml):

   • Sets up Go, Rust, and Node.js environments.
   • Installs system dependencies (protobuf-compiler, libssl-dev).
   • Builds the frontend and Tavern backend.
   • Starts Tavern and waits for it to become available on port 8000.
   • Fetches the IMIX_SERVER_PUBKEY from Tavern's /status endpoint and uses it to build the imixv2 agent.
   • Runs the imixv2 agent.
   • Installs Playwright and runs the E2E tests.

2. Test Spec (tests/e2e/tests/e2e.spec.ts):

   • Updates the locator for the beacon checkbox to .option-container input[type="checkbox"] to avoid selecting other checkboxes (like filters) that have been added to the UI.

This ensures that E2E tests are run in CI and that the agent is built with the correct server public key.

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PR created automatically by Jules for task 9164002744683115715 started by @KCarretto

[google-labs-jules]

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[KCarretto]

This has a conflict with main, please merge and update

[google-labs-jules]

Resolved the conflict in .gitignore by keeping both node_modules/ (from main) and tests/e2e/node_modules (from this branch).

[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
2422    ±0	2422    ±0	0    ±0	0    ±0	0    ±0	0    ±0	1ms    ±0

Previous Results

Build 🏗️	Result 🧪	Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
#3249	✅	2422	2422	0	0	0	0	26.6s

Insights

Average Tests per Run	Total Flaky Tests	Total Failed	Slowest Test (p95)
2422	0	0	43.1s

Slowest Tests

Test 📝	Results 📊	Duration (avg) ⏱️	Duration (p95) ⏱️
eldritch: random::string_impl::tests::test_string_uniform	3	39.4s	43.1s
eldritch: random::string_impl::tests::test_string_uniform	3	39.4s	43.1s
eldritch: random::string_impl::tests::test_string_uniform	3	39.4s	43.1s
eldritch: http::post_impl::tests::test_post_with_headers	3	2.8s	8.3s
eldritch: http::post_impl::tests::test_post_with_headers	3	2.8s	8.3s
eldritch: http::post_impl::tests::test_post_with_headers	3	2.8s	8.3s
eldritch: http::post_impl::tests::test_post_with_params	3	2.8s	8.2s
eldritch: http::post_impl::tests::test_post_with_params	3	2.8s	8.2s
eldritch: http::post_impl::tests::test_post_with_params	3	2.8s	8.2s
eldritch: http::post_impl::tests::test_post_with_params_and_headers	3	2.8s	8.2s

_{🎉 No failed tests in this run. | 🍂 No flaky tests in this run.}

Github Test Reporter by CTRF 💚