Fix E2E test failures by installing Playwright browsers in CI

[mpaulosky]

Summary

Resolves failing E2E tests in the squad-ci.yml workflow by installing Playwright browser binaries.

Problem

The E2E test suite (IssueManager.Web.E2E.Tests) was failing with:
\
Microsoft.Playwright.PlaywrightException:
Executable doesn't exist at /home/runner/.cache/ms-playwright/chromium_headless_shell-1161/chrome-linux/headless_shell
\\

This caused all 17 E2E tests to fail on GitHub Actions because Playwright browser binaries (Chromium) were not installed in the CI environment.

Solution

Added a new step 'Install Playwright Browsers' to the build pipeline that:

1. Installs the Playwright CLI tool globally
2. Installs the Chromium browser binary
3. Installs Chromium system dependencies for Linux

Changes

• Modified: .github/workflows/squad-ci.yml\
  • Added step after 'Build solution' to install Playwright browsers
  • Placement ensures browsers are available before test step runs

Testing

The workflow will now:

• Install Playwright CLI and browsers (takes ~30 seconds)
• Run all E2E tests with available Chromium browser
• All 17 E2E tests should pass

Related Issues

Fixes failing workflow run #22206338010

[Copilot]

Pull request overview

This pull request addresses E2E test failures in the CI pipeline by installing Playwright browser binaries before running tests. The solution adds a new workflow step that installs the Playwright CLI tool globally and downloads the Chromium browser with its system dependencies, resolving the issue where tests failed because browser binaries were missing in the GitHub Actions environment.

Changes:

• Added Playwright browser installation step to squad-ci.yml workflow
• Installation includes Playwright CLI tool, Chromium browser, and system dependencies for Linux
• Step is positioned after the build phase and before test execution

[github-actions]

Test Results Summary

101 tests   69 ✅  2s ⏱️
  6 suites   0 💤
  6 files    32 ❌

For more details on these failures, see this check.

Results for commit 7e5579e.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 46.22%. Comparing base (ce5cfd2) to head (7e5579e).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #14   +/-   ##
=======================================
  Coverage   46.22%   46.22%           
=======================================
  Files          25       25           
  Lines         411      411           
  Branches       17       17           
=======================================
  Hits          190      190           
  Misses        218      218           
  Partials        3        3           

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