Port the remaining macOS checks to the Bitrise ci-ios pipeline

[kieran-osgood-shopify]

What changes are you making?

After #910, four macOS checks still ran on GitHub Actions.

This PR moves them into the Bitrise ci-ios pipeline, so no macos PR check runs on a GitHub macOS runner any more.

GitHub job (deleted)	ci-ios job	Command
Swift / SwiftFormat & SwiftLint	swift-lint	platforms/swift/Scripts/lint check --verbose --skip-pod
Swift / CocoaPods	swift-podspec-lint	pod lib lint ShopifyCheckoutKit.podspec --allow-warnings
Breaking Changes / Swift	swift-api-check	platforms/swift/Scripts/api check
React Native / SwiftFormat & SwiftLint	react-native-lint-ios	platforms/react-native/scripts/lint_swift check

• Each job runs when the same files change as on GitHub Actions: the Swift filters for the three Swift jobs, and the React Native filters for the bridge lint. The bridge lint does not run on a Package.swift-only change, because it lints Swift source only.
• The Linux SwiftLint annotation jobs in swift-lint.yml and rn-lint.yml stay on GitHub Actions.
• The .github/actions/setup-mint action has no remaining users, so this PR deletes it.
• lint_swift now requires Mint-resolved tools when CI=true. Before, it checked GITHUB_ACTIONS, which Bitrise does not set.

Timings, 5 runs each

GitHub "before" times come from the last 5 successful CI runs. Bitrise "after" times come from 5 manual ci-ios runs of this branch with every job selected: #2319, #2324, #2337, #2340, #2343. Run 1 had a cold cache for the new Swift gems.

Check	GitHub job time (mean)	Bitrise job time (mean)	Bitrise wait for a Mac (median)
Swift / SwiftFormat & SwiftLint → ci-ios-swift-lint	21s	21s	39s
Swift / CocoaPods → ci-ios-swift-podspec-lint	196s	88s	22s
Breaking Changes / Swift → ci-ios-swift-api-check	171s	80s	27s
React Native / SwiftFormat & SwiftLint → ci-ios-react-native-lint-ios	16s	19s	45s

Required check	Before	After
ci-ios pipeline, all jobs selected	5.7m (median 5.9m)	5.4m (median 5.3m)

---

Before you merge

Important

• I've added tests to support my implementation
• I have read and agree with the Contribution Guidelines
• I have read and agree with the Code of Conduct
• I've updated the relevant platform README (platforms/swift/README.md and/or platforms/android/README.md)

---

Releasing a new Swift version?

• I have bumped the version in ShopifyCheckoutKit.podspec
• I have bumped the version in platforms/swift/Sources/ShopifyCheckoutKit/ShopifyCheckoutKit.swift
• I have updated the SwiftPM/CocoaPods version snippets in platforms/swift/README.md (major version only)

Releasing a new Embedded Checkout Protocol version?

• I have bumped embeddedCheckoutProtocolAndroidRelease in platforms/android/gradle/libs.versions.toml
• I have updated protocol/languages/kotlin/embedded-checkout-protocol/api/embedded-checkout-protocol.api if the public API changed
• Kit's embeddedCheckoutProtocolAndroid still references an available Maven Central release

Releasing a new Android version?

• I have bumped checkoutKitAndroid in platforms/android/gradle/libs.versions.toml
• I have updated the Gradle/Maven version snippets in platforms/android/README.md
• The ECP version in embeddedCheckoutProtocolAndroid is published, and normal Android CI passes against it

Releasing a new React Native version?

• I have bumped version in platforms/react-native/modules/@shopify/checkout-kit-react-native/package.json
• Any updated checkoutKit.nativeSdkVersions pins are available on Maven Central/CocoaPods
• Normal RN Android tests and the sample build pass against the published SDK, without --local or USE_LOCAL_SDK=1

Tip

See the Contributing documentation for the full release process per platform.
Changes spanning ECP, Android, and RN follow the dependency release sequence.

[github-actions]

Bundle Size Budgets

Budget	Size	Limits	Result
React Native npm package (gzip)	119.62 KiB (0 B)	130 KiB soft / 150 KiB hard	✅ Within budget

Bundle and package size

Web bundle sizes cover shipped runtime JavaScript. Package sizes cover the full published archive, including any source maps, declarations, and documentation it contains.

Platform	Measurement	Compression	Base	Head	Delta
React Native	npm package (.tgz)	gzip	119.6 KiB	119.6 KiB	0 B

React Native package files (uncompressed)

These are uncompressed file sizes; they do not sum to the compressed package size above.

File	Base	Head	Delta
node_modules/@shopify/checkout-kit-protocol/src/generated/Models.ts	108.7 KiB	108.7 KiB	0 B
node_modules/@shopify/checkout-kit-protocol/src/generated/Models.d.ts	73.1 KiB	73.1 KiB	0 B
android/src/main/java/com/shopify/reactnative/checkoutkit/ShopifyCheckoutKitModule.java	16.2 KiB	16.2 KiB	0 B
ios/ShopifyCheckoutKit.swift	16.1 KiB	16.1 KiB	0 B
ios/AcceleratedCheckoutButtons.swift	14.1 KiB	14.1 KiB	0 B
src/components/AcceleratedCheckoutButtons.tsx	13.0 KiB	13.0 KiB	0 B
src/index.ts	12.7 KiB	12.7 KiB	0 B
lib/commonjs/index.js	12.4 KiB	12.4 KiB	0 B
lib/commonjs/components/AcceleratedCheckoutButtons.js	11.4 KiB	11.4 KiB	0 B
src/index.d.ts	11.3 KiB	11.3 KiB	0 B
lib/commonjs/components/AcceleratedCheckoutButtons.js.map	10.4 KiB	10.4 KiB	0 B
lib/module/index.js	10.4 KiB	10.4 KiB	0 B
lib/module/components/AcceleratedCheckoutButtons.js	10.2 KiB	10.2 KiB	0 B
node_modules/@shopify/checkout-kit-protocol/src/generated/ProtocolNotifications.ts	9.5 KiB	9.5 KiB	0 B
lib/module/components/AcceleratedCheckoutButtons.js.map	9.1 KiB	9.1 KiB	0 B
lib/module/index.js.map	8.1 KiB	8.1 KiB	0 B
src/present-dispatcher.ts	8.0 KiB	8.0 KiB	0 B
lib/commonjs/index.js.map	7.9 KiB	7.9 KiB	0 B
node_modules/@shopify/checkout-kit-protocol/src/generated/ProtocolRenameMap.ts	7.8 KiB	7.8 KiB	0 B
node_modules/@shopify/checkout-kit-protocol/src/generated/ProtocolNotifications.d.ts	7.6 KiB	7.6 KiB	0 B
…and 117 smaller files

How sizes are measured

Measured from the PR base SHA and PR head SHA. Web bundle rows sum shipped .js, .mjs, and .cjs files under dist/, excluding source maps and declarations. The gzip bundle size sums files compressed individually with gzip -n -9. npm package sizes are gzip-compressed .tgz archives; Android AAR sizes are ZIP archives. Package sizes are not final app binary sizes.