chore(ci): Collect static files before running tests

Copy frontend-generated files into STATIC_ROOT before tests run so SVG
rendering tests can read their CSS directly.
Also add pull-requests read permission to the workflow.

Fixes #22150

.github/workflows/ci.yml

@@ -20,6 +20,7 @@ on:
 
 permissions:
   contents: read
+  pull-requests: read
 
 # Add concurrency group to control job running
 concurrency:
@@ -125,6 +126,11 @@ jobs:
       - name: Check for missing migrations
         run: python netbox/manage.py makemigrations --check
 
+      # Copy frontend-generated files into STATIC_ROOT before SVG rendering
+      # tests read their CSS directly.
+      - name: Collect static files
+        run: python netbox/manage.py collectstatic --no-input
+
       - name: Run tests
         if: ${{ ! matrix.coverage }}
         run: python netbox/manage.py test netbox/ --parallel