feat(local-explorer-ui): Add agent prompt card

[NuroDev]

Fixes N/A.

Summary

• Upgrades @cloudflare/kumo to version 1.18.0
• Adds a new layer card to the homepage
  • Includes a prompt to provide agents / LLMs for how to use the local explorer API
• Ran the workspace prettify script to format a number of other Local Explorer files

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• 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: WIP Experimental feature

A picture of a cute animal (not mandatory, but encouraged)

---

[changeset-bot]

🦋 Changeset detected

Latest commit: 893bf3f

The changes in this PR will be included in the next version bump.

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[github-actions]

⚠️ Issues found

.changeset/fuzzy-years-cover.md

Version Type: This changeset describes adding a new "Copy prompt for agent" button, which is a new feature. According to the changeset guidelines, new features should be minor, not patch:

• minor: New features, new CLI commands, new configuration options, deprecations, and changes to experimental/beta/pre-1.0 features

Please change the version type from patch to minor.

---

.changeset/tangy-wings-cover.md looks good - patch is appropriate for a bug fix.

[ask-bonk]

I'm Bonk, and I've done a quick review of your PR.

This PR adds an agent/LLM prompt card to the Local Explorer homepage, upgrades @cloudflare/kumo to 1.18.0, and includes a clipboard-copy feature for the prompt text.

Issues found (ranked by severity):

1. Incorrect OpenAPI schema URL in prompt (packages/local-explorer-ui/src/routes/index.tsx:14) -- The prompt tells LLMs to "Fetch the OpenAPI schema from /api", but the OpenAPI spec is actually served at the full API endpoint path (/cdn-cgi/explorer/api). An LLM will request either <origin>/api (absolute) or <apiEndpoint>/api (appended), both of which are wrong. I posted a suggestion comment with the fix.

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commit: 893bf3f

[workers-devprod]

Codeowners approval required for this PR:

• ✅ @cloudflare/wrangler

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[devin-ai-integration]

✅ Devin Review: No Issues Found

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

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[workers-devprod]

Codeowners reviews satisfied