: Using filepath.Walk or the more modern AddFS (added in Go 1.22) to recursively add entire folder structures while maintaining relative paths.

: In Go's archive/zip , adding a folder explicitly requires a trailing slash in the path (e.g., folder/ ) to distinguish it from a file.

: Create entry headers with Writer.Create or Writer.CreateHeader .

: Create a new writer using zip.NewWriter(outputFile) .

A robust Go ZIP utility should include these core functionalities:

: Implementing chunked data writing (e.g., 4096-byte buffers) to handle large files without exhausting system memory.

: Use io.Copy to transfer file contents into the archive writer.