[miniflare] Enforce curly lint rule

[penalosa]

What this PR does

• Enables the repo-wide curly lint rule for packages/miniflare/**.
• Adds braces to the existing single-line control flow statements — no behaviour changes.
• Updates the Miniflare agent guidance to remove curly from the transitional disabled-rule list.

No changeset — this is an internal lint-only refactor with no user-facing impact.

---

• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because: this is a mechanical lint-only refactor; the existing Miniflare test suite passes.
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: this only changes internal lint enforcement and code style.

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

[changeset-bot]

⚠️ No Changeset found

Latest commit: 2022ad8

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[ask-bonk]

LGTM!

github run

[pkg-pr-new]

@cloudflare/autoconfig

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@cloudflare/build-output-utils

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create-cloudflare

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@cloudflare/deploy-helpers

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@cloudflare/kv-asset-handler

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miniflare

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@cloudflare/pages-functions

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@cloudflare/pages-shared

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@cloudflare/workers-auth

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@cloudflare/workers-utils

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wrangler

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commit: 2022ad8

[workers-devprod]

Codeowners approval required for this PR:

• @cloudflare/workers-kv
• ✅ @cloudflare/wrangler

Show detailed file reviewers

• packages/miniflare/src/workers/kv/constants.ts: [@cloudflare/workers-kv]
• packages/miniflare/src/workers/kv/namespace.worker.ts: [@cloudflare/workers-kv]
• packages/miniflare/src/workers/kv/sites.worker.ts: [@cloudflare/workers-kv]
• packages/miniflare/src/workers/kv/validator.worker.ts: [@cloudflare/workers-kv]
• packages/miniflare/test/plugins/kv/sites.spec.ts: [@cloudflare/workers-kv]

[devin-ai-integration]

✅ Devin Review: No Issues Found

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

[dario-piotrowicz]

Awesome! Thanks! 😄 🫶