Implement InputFolderReader

[leogdion]

Phase

Phase 3: Input/Output Handlers

Specification

Create input folder reader that validates and reads dsl.swift and expected.swift files.

Acceptance Criteria

• InputFolderReader struct created with folderPath property
• Inputs nested struct defined with dslCode and expectedSwift properties
• readInputs() validates presence of required files
• readInputs() reads file contents with error handling
• Appropriate errors thrown for missing files
• Code follows one-type-per-file organization

Dependencies

• Depends on: Implement AnalyzerConfiguration and AnalyzerError #110

Files to Create/Modify

• Sources/AiSTKit/InputFolderReader.swift

Related Documentation

• skit-analyze-plan.md