Oxlint configuration setup

[kentcdodds]

Add an Oxlint configuration, mirroring the existing ESLint setup, to offer a modern, fast linter and document its current rule limitations.

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Note

Low Risk
Adds a new exported linter config and documentation only; no runtime or build logic is changed, so risk is limited to consumers opting into new lint rules/ignores.

Overview
Adds a first-class Oxlint configuration alongside the existing ESLint/Prettier/TypeScript configs.

Introduces oxlint-config.json (rules, ignore patterns, and file overrides roughly mirroring the ESLint setup) and publishes it via a new ./oxlint export in package.json. Updates the README with Oxlint setup instructions, notes about type-aware rules, and a list of ESLint rules/plugins that are intentionally unsupported/omitted in Oxlint.

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Bugbot Autofix prepared fixes for 1 of the 1 bugs found in the latest run.

• ✅ Fixed: Option name uses wrong case convention
  • Updated the import/no-duplicates option to use kebab-case so Oxlint recognizes it like the ESLint config.

[cursor]

Bugbot Autofix prepared fixes for 1 of the 1 bugs found in the latest run.

• ✅ Fixed: Duplicate eslint/no-unused-vars configuration in overrides
  • Consolidated the eslint/no-unused-vars rule into the shared source-files override to eliminate duplicate definitions.

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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[cursor]

Bugbot Autofix prepared fixes for 1 of the 1 bugs found in the latest run.

• ✅ Fixed: Case mismatch in warning comment term configuration
  • Updated the oxlint rule term to uppercase "FIXME" to match the ESLint configuration and documented convention.

[github-actions]

🎉 This PR is included in version 1.22.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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