Create Xcode project with XcodeGen

[2witstudios]

Epic 5: iOS App — Models & Networking — Issue 1/6

Source: 1-agent worktree — XcodeGen is strictly better than hand-editing pbxproj

Description

Set up the iOS project using XcodeGen for a declarative, diffable, mergeable project configuration.

Acceptance Criteria

• ios/PPGMobile/project.yml — XcodeGen spec
• iOS 17.0 deployment target
• Swift 5.9
• Bundle ID: com.2witstudios.ppg-mobile
• Directory structure: App/, Models/, Networking/, Views/, State/
• Asset catalog with AppIcon placeholder
• xcodegen generate produces valid .xcodeproj
• .gitignore includes .xcodeproj (generated from project.yml)

Files to Create

• ios/PPGMobile/project.yml (new)
• ios/PPGMobile/PPGMobile/App/PPGMobileApp.swift (new)
• ios/PPGMobile/PPGMobile/Assets.xcassets/ (new)