Function create_tarball 

pub fn create_tarball(project_dir: &Path) -> Result<Vec<u8>, PackageError>

Create a gzipped tarball from a LOGOS project.

Packages the project for upload to the registry. The tarball includes:

• Largo.toml (required)
• src/ directory recursively (required)
• README.md (if present)
• LICENSE (if present)

Hidden files (starting with .) and the target/ directory are excluded. Only .lg, .md, .toml, and .json files are included from src/.

Arguments

• project_dir - Root directory of the LOGOS project

Errors

Returns PackageError::MissingFile if Largo.toml or src/ is missing.