Closes #22093: Run coverage only on a single matrix entry (#22117)

Add explicit CI job names showing the Python and Node versions, with the
coverage job clearly marked in the GitHub Actions UI.

Run coverage only for the designated coverage matrix entry to avoid
redundant coverage collection and reporting across the full test matrix.

Also add the YAML document marker and clean up trailing whitespace.

.github/workflows/ci.yml

@@ -1,3 +1,4 @@
+---
 name: CI
 
 on:
@@ -26,6 +27,9 @@ concurrency:
 
 jobs:
   build:
+    name: >-
+      Tests (Python ${{ matrix.python-version }},
+      Node ${{ matrix.node-version }}${{ matrix.coverage && ', coverage' || '' }})
     runs-on: ubuntu-latest
     env:
       NETBOX_CONFIGURATION: netbox.configuration_testing
@@ -33,6 +37,12 @@ jobs:
       matrix:
         python-version: ['3.12', '3.13', '3.14']
         node-version: ['20.x']
+        include:
+          - coverage: false
+          # Run coverage only once, using the Python 3.14 job.
+          - python-version: '3.14'
+            node-version: '20.x'
+            coverage: true
     services:
       redis:
         image: redis
@@ -53,35 +63,35 @@ jobs:
 
     steps:
     - name: Check out repo
-      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
 
     - name: Check Python linting & PEP8 compliance
-      uses: astral-sh/ruff-action@0ce1b0bf8b818ef400413f810f8a11cdbda0034b # v4.0.0
+      uses: astral-sh/ruff-action@0ce1b0bf8b818ef400413f810f8a11cdbda0034b  # v4.0.0
       with:
         version: "0.15.10"
         args: "check --output-format=github"
         src: "netbox/"
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
+      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405  # v6.2.0
       with:
         python-version: ${{ matrix.python-version }}
 
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
+      uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f  # v6.3.0
       with:
         node-version: ${{ matrix.node-version }}
-    
+
     - name: Install Yarn Package Manager
       run: npm install -g yarn
-    
+
     - name: Setup Node.js with Yarn Caching
-      uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
+      uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f  # v6.3.0
       with:
         node-version: ${{ matrix.node-version }}
         cache: yarn
         cache-dependency-path: netbox/project-static/yarn.lock
-    
+
     - name: Install Frontend Dependencies
       run: yarn --cwd netbox/project-static
 
@@ -102,12 +112,22 @@ jobs:
 
     - name: Check UI ESLint, TypeScript, and Prettier Compliance
       run: yarn --cwd netbox/project-static validate
-    
+
     - name: Validate Static Asset Integrity
       run: scripts/verify-bundles.sh
 
     - name: Run tests
-      run: coverage run --source="netbox/" netbox/manage.py test netbox/ --parallel
+      if: ${{ ! matrix.coverage }}
+      run: python netbox/manage.py test netbox/ --parallel
+
+    - name: Run tests with coverage
+      if: ${{ matrix.coverage }}
+      run: >-
+        coverage run --source="netbox/"
+        netbox/manage.py test netbox/ --parallel
 
     - name: Show coverage report
-      run: coverage report --skip-covered --omit '*/migrations/*,*/tests/*'
+      if: ${{ matrix.coverage }}
+      run: >-
+        coverage report --skip-covered
+        --omit '*/migrations/*,*/tests/*'