Flaky CI: e2e (linux) and e2e (windows) fail across unrelated PRs

[jackoatmon]

Summary

The test workflow's Playwright E2E matrix is failing on both Linux and Windows across unrelated PRs, which is blocking merges even when unit/typecheck/compliance checks pass.

Evidence

• Run 22971287522 (PR fix(opencode): align tool visibility with session permissions #17089):
  • e2e (linux) failed (job 66688958002)
  • e2e (windows) failed (job 66688958011)
• Another unrelated PR run 22971376239 also has the same two failures:
  • e2e (linux) failed
  • e2e (windows) failed

Observations

• In both jobs, the failing step is Run app e2e tests.
• Other checks in the same runs are green (typecheck/unit/compliance/standards/etc.).
• Existing artifacts for failed jobs include Playwright reports/traces (playwright-linux-1, playwright-windows-1).

Requested follow-up

• Investigate flaky/non-deterministic E2E behavior in test workflow for both platforms.
• Determine if this should be quarantined/retried automatically while root cause is fixed.

[github-actions]

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What needs to be fixed:

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This issue might be a duplicate of existing issues. Please check:

• Flaky e2e: "switching back to a project opens the latest workspace session" #14461: Also reports flaky e2e tests in CI (specific test flakiness with a race condition in project-switch navigation)

If you believe this was flagged incorrectly, please let a maintainer know.

[github-actions]

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