[STYLE] Apply changes from review (- WIP PR #328 -)

Changes in file .github/workflows/CI-BUILD.yml:
 * cleaned up a bit

Author: reactive-firewall

.github/workflows/CI-BUILD.yml

@@ -20,7 +20,7 @@ permissions: {}
 
 env:
   ENVIRONMENT: ${{ (github.ref == 'refs/heads/stable' || startsWith(github.ref, 'refs/tags/v')) && 'Deployment' || (github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/feature') || startsWith(github.ref, 'refs/heads/patch-') || startsWith(github.ref, 'refs/tags/v')) && 'Testing' || 'Experimenting' }}
-  # Define Python versions at the top level
+  # Define Python versions at the top level -- Expected format: X.Y (e.g., 3.13)
   PYTHON_DEFAULT: "${{ vars.PYTHON_DEFAULT }}"
   PYTHON_OLD_MIN: "${{ vars.PYTHON_OLD_MIN }}"  # For Oldest Python versions
   PYTHON_EXPERIMENTAL: "${{ vars.PYTHON_EXPERIMENTAL }}"  # For future Python versions
@@ -42,7 +42,6 @@ jobs:
         shell: bash
     env:
       LANG: "en_US.UTF-8"
-      PYTHON_DEFAULT: "${{ vars.PYTHON_DEFAULT }}"
     outputs:
       build_status: ${{ steps.build.outcome }}
     steps:
@@ -132,7 +131,7 @@ jobs:
       - name: Summerize Building
         id: sumerize-py-build
         run: |
-          echo "- [x] Building works on python version ${{ matrix.python-version }}" >> $GITHUB_STEP_SUMMARY
+          echo "- [x] Building works on python version ${{ matrix.python-version }}" >> "$GITHUB_STEP_SUMMARY"
         if: ${{ success() }}
         shell: bash
       - name: Run Tests
@@ -142,7 +141,7 @@ jobs:
       - name: Summerize Install
         id: sumerize-user-install
         run: |
-          echo "- User Installing works on python version ${{ matrix.python-version }}" >> $GITHUB_STEP_SUMMARY
+          echo "- [x] User Installing works on python version ${{ matrix.python-version }}" >> "$GITHUB_STEP_SUMMARY"
         if: ${{ success() }}
         shell: bash
       - name: Test Info