Replace Yarn with Bun as the package manager

[smorimoto]

Summary

• Remove Yarn configuration (.yarnrc.yml, yarn.lock, .yarn/ directory) and the packageManager field from package.json
• Update all CI/CD workflows (main.yml, typedoc.yml, version-or-publish.yml) to use Bun commands (bun install --frozen-lockfile, bun run, bunx)
• Update Mise tooling configuration to install Bun instead of Yarn
• Generate bun.lock as the new lockfile

Test plan

• bun run build passes locally
• bun run test passes locally (47 test files, 134 tests)
• CI workflows pass on GitHub Actions

---

Note

Medium Risk
Switches the project’s package manager and updates CI/release commands, which can affect install determinism and publishing behavior if Bun/npm invocation differs from Yarn.

Overview
Migrates the repo from Yarn to Bun by removing Yarn-specific config (.yarnrc.yml, .yarn/ ignore) and introducing a bun.lock lockfile plus Mise configuration to install Bun.

Updates GitHub Actions workflows to run installs, formatting, builds, tests, typedoc generation, and Changesets version/publish steps via bun/bunx instead of yarn, and adds a Changesets patch entry documenting the migration.

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[changeset-bot]

🦋 Changeset detected

Latest commit: 2e0927c

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

This PR includes changesets to release 1 package

Name	Type
swagger-typescript-api	Patch

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[chatgpt-codex-connector]

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[cursor]

Publish command loses idempotency flag for retries

Medium Severity

The publish command changed from yarn npm publish --tolerate-republish to bunx npm publish, dropping the --tolerate-republish flag. This Yarn-specific flag allows the publish command to succeed even if the package version was already published, which is essential for retrying partially failed CI runs. Without it, retrying a publish workflow after a partial failure will error out when encountering already-published versions. The standard npm publish command has no equivalent flag.