Update job docblocks.

Author: desrosj

.github/workflows/test-and-zip-default-themes.yml

@@ -112,7 +112,12 @@ jobs:
   # - Sets up Node.js.
   # - Installs npm dependencies.
   # - Runs the theme build script.
-  # - Ensures version-controlled files are not modified or deleted.
+  # - Checks for uncommitted changes.
+  # - Stages all uncommitted changes and adds any unversioned files.
+  # - Displays a diff of all staged changes.
+  # - Saves staged changes to a .diff file.
+  # - Uploads the diff file as an artifact.
+  # - Fails the job when uncommitted changes are detected.
   test-build-scripts:
     name: Test ${{ matrix.theme }} build script
     runs-on: ubuntu-24.04
@@ -198,6 +203,9 @@ jobs:
   #
   # Performs the following steps:
   # - Checks out the repository.
+  # - Sets up Node.js.
+  # - Installs npm dependencies.
+  # - Runs the theme build script.
   # - Uploads the theme files as a workflow artifact (files uploaded as an artifact are automatically zipped).
   bundle-theme:
     name: Create ${{ matrix.theme }} ZIP file