CI: Added kernel installation

Author: AlmostAnna

.github/workflows/publish-book.yml

@@ -53,11 +53,18 @@ jobs:
           conda env update --file environment.yml --prune
           conda activate quantlab
           conda info --envs
+          
+          # Register the conda environment as a Jupyter kernel
+          python -m ipykernel install --user --name quantlab --display-name "Python (quantlab)"
 
       - name: Execute notebooks to generate outputs for MyST
         shell: bash -l {0}
         run: |
           conda activate quantlab
+          # Verify kernel is available
+          echo "Available kernels:"
+          jupyter kernelspec list
+          
           # Execute notebooks to populate outputs for MyST rendering
           # Only execute notebooks that need outputs
           jupyter nbconvert --execute --inplace --to notebook notebooks/Heston_Model_Calibration_Pricing_Hedging.ipynb || echo "Heston notebook not found or not executed"