## Package Installation Flow

1. **Fetch URL**
   └─> Download content
   └─> Build Package Instance (Metadata & Payload)
   └─> Check local file status

2. **Local File Check**
   ├─> If file doesn't exist:
   │   └─> Save file
   │
   └─> If file exists:
       └─> Compare versions
           ├─> If older/same:
           │   └─> "Package already installed"
           │
           └─> If newer:
               └─> Check local modifications
                   ├─> If modified:
                   │   └─> "Local modifications detected"
                   │   └─> "Use 'update <file_path>'"
                   │
                   └─> If unmodified:
                       └─> "Update available"
                       └─> "Use 'update <file_path> -f' to force update"