graph TD A[Start Package Samples] --> B[Receive wav-snippets input] B --> C[Validate WAV files exist] C --> D{All files valid?} D -->|No| E[Error: Missing files] D -->|Yes| F[Create temp directory] F --> G[Copy WAV files to temp] G --> H[Create ZIP archive] H --> I[Add WAV files to ZIP] I --> J[Compress ZIP file] J --> K[Verify ZIP integrity] K --> L{ZIP valid?} L -->|No| M[Error: ZIP creation failed] L -->|Yes| N[Output 3_samples.zip] N --> O[Clean temp directory] O --> P[End Package Samples] E --> P M --> P