Add Swift File to Xcode Project

New Swift files won't compile until added to project.pbxproj. Missing entries cause:

error: cannot find 'ClassName' in scope

Required Entries (4 per file)

Each new file needs these entries in ios/CouponTracker.xcodeproj/project.pbxproj:

1. PBXFileReference

Declares the file exists. Add in alphabetical order within the section.

{ID1} /* FileName.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FileName.swift; sourceTree = "<group>"; };

2. PBXBuildFile

Links file to compilation.

{ID2} /* FileName.swift in Sources */ = {isa = PBXBuildFile; fileRef = {ID1} /* FileName.swift */; };

3. PBXGroup

Add file reference ID to the appropriate group's children array (match folder structure).

4. PBXSourcesBuildPhase

Add build file ID to the correct target's files array:

• •Main app: CouponTracker target
• •Tests: CouponTrackerTests target

ID Generation

Use unique 24-character uppercase hex IDs. Pattern:

XXXX1234567890ABCDEF0001  (source file)
XXXX1234567890ABCDEF0002  (build file)

Where XXXX is a 4-char prefix based on filename (e.g., BSVC for BenefitStateService).

Verification

xcodebuild -project ios/CouponTracker.xcodeproj -scheme CouponTracker -destination 'platform=iOS Simulator,name=iPhone 17 Pro' build 2>&1 | tail -5

Expect: ** BUILD SUCCEEDED **