copilot instructions: fixes on createsuperuser

For some reason the env-vars were missed; pulling them closer hopefully fixes
this (and makes more sense generally)

the `|| true` pattern was removed: it just hides problems.

also: different username (email) to stick closer to what we do elsewhere.

.github/copilot-instructions.md

@@ -43,7 +43,7 @@ Test the frontend by running the server like so and checking in a browser:
 
 `python manage.py runserver` (uses `bugsink.settings.development`)
 
-(an admin/admin user is available in your environment)
+(an admin user is available in your environment. login with admin@example.org/admin)
 
 ### Before committing
 

.github/workflows/copilot-setup-steps.yml

@@ -17,9 +17,6 @@ jobs:
     env:
       DJANGO_SETTINGS_MODULE: bugsink.settings.development
       SAMPLES_DIR: ${{ github.workspace }}/event-samples
-      DJANGO_SUPERUSER_USERNAME: admin
-      DJANGO_SUPERUSER_EMAIL: admin@example.com
-      DJANGO_SUPERUSER_PASSWORD: admin
     steps:
       - name: Check out code
         uses: actions/checkout@v4
@@ -49,10 +46,12 @@ jobs:
         # Ensures the SQLite database is initialized.
 
       - name: Create superuser
+        env:
+          DJANGO_SUPERUSER_USERNAME: admin@example.com
+          DJANGO_SUPERUSER_EMAIL: admin@example.com
+          DJANGO_SUPERUSER_PASSWORD: admin
         run: |
-          python manage.py createsuperuser --noinput || true
-        # Creates a default admin user so Copilot can log in if needed.
-        # `|| true` prevents failure if the user already exists.
+          python manage.py createsuperuser --noinput
 
       - name: Check out event-samples outside workspace
         # by using a plain-old `git-clone` we are able to "ecape from the working dir"