chore(local-explorer-ui): Fix E2E test flake-y-ness

[NuroDev]

Fixes N/A.

Summary

This includes a number of smaller tweaks and changes to try and prevent some of the recent issues we have seen where the LE E2E tests have been failing due to timeouts in CI. This includes:

• Increase workflow total timeout to 30 minutes from 10 minutes
• Disabled test file parallelism
• Increased Vitests hook & test timeout specifically when running in CI
• Switched "page load complete" stage from networkidle to domcontentloaded
• Tweaked some R2 breadcrumb tests that have been consistently failing
• Ran the workspace prettify script and fixed a few minor formatting issues with 2 changesets

---

• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because:
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: Only affects the test suite

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[changeset-bot]

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Latest commit: 4f458d9

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[workers-devprod]

Codeowners approval required for this PR:

• ✅ @cloudflare/wrangler

Show detailed file reviewers

[ask-bonk]

The changes are straightforward and sensible. Let me assess each change:

1. Workflow timeout 10 -> 30 min: The step-level timeout now equals the job-level timeout, making the step timeout redundant. But it was previously 10 which was too tight — this is fine.

2. fileParallelism: false: Reasonable for flaky E2E tests sharing browser state.

3. CI-conditional timeouts: Clean approach using process.env.CI.

4. networkidle -> domcontentloaded: This is the key change for flake reduction. networkidle is notoriously flaky in Playwright. The tests already use explicit waitForText/waitForTableRows after navigation, so domcontentloaded is sufficient.

5. seedFetch with AbortController: Good improvement — adds timeout and error checking for seed requests that previously had no timeout and silently ignored failures.

Everything looks correct and well-reasoned. No logic bugs, no security issues, no backward compatibility concerns.

LGTM

github run

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 4 additional findings.

[pkg-pr-new]

create-cloudflare

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@cloudflare/kv-asset-handler

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miniflare

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@cloudflare/pages-shared

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@cloudflare/unenv-preset

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@cloudflare/vite-plugin

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@cloudflare/vitest-pool-workers

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@cloudflare/workers-editor-shared

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wrangler

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commit: 4f458d9

[petebacondarwin]

Passed 3 times in a row locally for me.

[workers-devprod]

Codeowners reviews satisfied