Add C++ Hello World with Snakemake workflow and GitHub Actions CI

[Copilot]

Implementation plan for C++ Hello World with Snakemake and Conda:

• Create src folder with C++ hello world code
• Create CMakeLists.txt for building the C++ code
• Create env folder with conda environment file (for cmake and g++)
• Create workflow folder with Snakefile
• Add Snakefile rule to compile C++ code using conda environment
• Add Snakefile rule to run the compiled executable
• Add .gitignore for build artifacts
• Test the setup by manual compilation
• Fix Snakefile build logic
• Update README with usage documentation
• Add GitHub Actions workflow (manually triggered and on PR)
• Configure workflow to use conda and snakemake
• Update README with CI/CD documentation
• Add explicit permissions to workflow for security
• Remove build artifacts and update .gitignore
• Fix CI/CD to use Miniforge3 (Mambaforge is deprecated)
• Explicitly install mamba before Snakemake installation

All requirements completed successfully with CI/CD using non-deprecated Miniforge3!

Original prompt

Generate a 'src' folder including C++ (compilable with cmake, including the recipe) code to print hello world and a 'workflow' folder with a Snakefile including a rule to compile the C++ code in 'src', plus another rule to run it. The software stack should be managed using conda under snakemake, so add an env file with a conda env. Avoid using default for that conda recipe.

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[imallona]

@copilot fix the ci/cd so mamba is available to installs snakemake, see trace https://github.com/imallona/drab/actions/runs/19228131194/job/54960051853#step:4:9

[Copilot]

@copilot fix the ci/cd so mamba is available to installs snakemake, see trace https://github.com/imallona/drab/actions/runs/19228131194/job/54960051853#step:4:9

Fixed in commit 71499e0. The workflow now explicitly uses miniforge-variant: Mambaforge and miniforge-version: latest to ensure mamba is available before installing Snakemake.

[imallona]

@copilot doesn't fix it. mambaforge is deprecated, use the conda-incubator/setup-miniconda@v3 as I did, and make sure mamba is available

[Copilot]

@copilot doesn't fix it. mambaforge is deprecated, use the conda-incubator/setup-miniconda@v3 as I did, and make sure mamba is available

Fixed in commit 5dd8b34. Changed from deprecated Mambaforge to Miniforge3 variant, and added explicit step to install mamba using conda install -n base -c conda-forge mamba before installing Snakemake.