Download a file from a URL to a local directory or file path.

Features:

• Supports HTTP and HTTPS protocols

• Streams large files efficiently (no memory pressure)

• Auto-detects filename from URL or Content-Disposition header

• Creates parent directories automatically

• Configurable timeout (300s) and size limit (500MB)

• Safe filename sanitization (removes dangerous characters)

Examples:

• Download to directory: { "url": "https://example.com/file.pdf", "dest_path": "/home/user/downloads" }

• Download with custom name: { "url": "https://example.com/data.csv", "dest_path": "/tmp", "filename": "my_data.csv" }

• With auth headers: { "url": "https://api.example.com/export", "dest_path": "./output.json", "headers": { "Authorization": "Bearer token123" } }