Update demo notebook dependencies and initialization cells

.github/workflows/alltests.yml

@@ -196,6 +196,14 @@ jobs:
         run: |
           pip install --find-links ./.wheels -e '.[test,test_torch,test_gpytorch,test_botorch]'
       # -----------------------------------------------------------
+      # Colab readiness smoke tests (Linux only)
+      # -----------------------------------------------------------
+      - name: Run Colab readiness smoke tests (Linux)
+        if: runner.os == 'Linux'
+        shell: bash -l {0}
+        run: |
+          make check_colab_notebooks
+      # -----------------------------------------------------------
       # Install minimal LaTeX required by Jupyter notebooks (OS-specific)
       # -----------------------------------------------------------
       - name: Install minimal LaTeX (Linux)
@@ -252,6 +260,7 @@ jobs:
           mpm --admin --install=lmodern
           mpm --admin --install=type1cm
           mpm --admin --install=tex-gyre
+          mpm --admin --install=underscore
           latex --version
           latexmk -v
           dvipng --version
@@ -345,4 +354,4 @@ jobs:
           fail_ci_if_error: false
           files: ./artifacts/coverage/booktests/coverage.json
 
-# For success reports, see https://github.com/QMCSoftware/QMCSoftware/actions?query=is%3Asuccess+workflow%3AAll+Tests
+# For success reports, see https://github.com/QMCSoftware/QMCSoftware/actions?query=is%3Asuccess+workflow%3AAll+Tests

.gitignore

@@ -34,6 +34,7 @@ demos/prob_failure_gp_ci_plots/
 demos/fgpr_figs/
 demos/GBM/images/*.png
 demos/GBM/outputs/*.*
+*.tmp_colab*
 
 # tests
 .coverage