YPE-1178 Add IOS CI build test

[camrun91]

Description

We had gotten the repo in a state where the IOS example app build was failing. This puts in place a CI test to make sure it passes on PR's

Type of Change

• feat: New feature (non-breaking change which adds functionality)
• fix: Bug fix (non-breaking change which fixes an issue)
• docs: Documentation update
• refactor: Code refactoring (no functional changes)
• perf: Performance improvement
• test: Test additions or updates
• build: Build system or dependency changes
• ci: CI configuration changes
• chore: Other changes (maintenance, etc.)

Checklist

• My code follows the project's code style guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings or errors
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• All commit messages follow conventional commits format
• I have updated the appropriate section in documentation (if needed)

[camrun91]

@jhampton, adding you as a reviewer here for context. This failure is legit; it is the failure I fixed in my other PR. Once that one gets merged, we will be able to update this pr and should see the test pass here.

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[greptile-apps]

Greptile Overview

Greptile Summary

Added new GitHub Actions workflow to test iOS example app builds on pull requests to main branch

• Sets up macOS runner with Xcode, Node.js 20, Ruby 3.2, and CocoaPods
• Installs dependencies for both root and example app
• Uses Expo prebuild to generate native iOS directory
• Builds iOS app to catch build failures in CI before merge
• Comment on line 15 says "Pin Xcode" but actually uses 'latest-stable' (not pinned)
• Missing explicit permissions block (other workflows use contents: read)
• Missing newline at end of file

Confidence Score: 4/5

• Safe to merge with minor style improvements recommended
• Workflow follows good patterns from existing CI workflows, properly sets up iOS build environment, and achieves stated goal of testing iOS builds. Only style issues: misleading comment about pinning Xcode, missing permissions block, and missing newline at EOF
• No files require special attention

Important Files Changed

Filename	Overview
.github/workflows/example_ios_build.yml	New CI workflow to test iOS example app builds on PRs; comment contradicts xcode-version config

Sequence Diagram

sequenceDiagram
    participant PR as Pull Request
    participant GHA as GitHub Actions
    participant Node as Node.js Setup
    participant Expo as Expo Prebuild
    participant Ruby as Ruby/Bundler
    participant Xcode as Xcode Build

    PR->>GHA: Trigger on PR to main
    GHA->>GHA: Checkout repository
    GHA->>Xcode: Select latest-stable Xcode
    GHA->>Node: Setup Node 20 with npm cache
    Node->>GHA: Install root dependencies (npm ci)
    Node->>GHA: Install example dependencies (npm ci)
    GHA->>Expo: Run expo prebuild --clean --platform ios
    Expo->>GHA: Generate ios/ directory with native code
    GHA->>Ruby: Setup Ruby 3.2 with bundler cache
    Ruby->>GHA: Install CocoaPods (pod install)
    GHA->>Xcode: Build iOS app (npm run ios --no-install)
    Xcode->>GHA: Build result
    GHA->>PR: Report success/failure

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[greptile-apps]

_{1 file reviewed, 3 comments}

_{Edit Code Review Agent Settings | Greptile}

[bmanquen]

Do these not get installed when running it at the root?

[camrun91]

I do not believe they do.