fix: remove server-specific playwright volume from dev compose, auto-seed on startup

- /opt/playwright-tools/browsers only exists on agent-workspace; mounting it
  in docker-compose.yml breaks local dev for everyone else
- seed_e2e_content is idempotent so safe to run on every startup; removes the
  manual step that nobody knew about

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

docker-compose.yml

@@ -4,10 +4,10 @@ services:
     working_dir: /app
     command: >
       sh -c "python manage.py migrate --noinput &&
+             python manage.py seed_e2e_content &&
              python manage.py runserver 0.0.0.0:8000"
     volumes:
       - .:/app
-      - /opt/playwright-tools/browsers:/opt/playwright-tools/browsers:ro
     ports:
       - "8035:8000"
     environment:
@@ -22,7 +22,6 @@ services:
       EMAIL_BACKEND: django.core.mail.backends.console.EmailBackend
       DEFAULT_FROM_EMAIL: hello@nohypeai.com
       NEWSLETTER_PROVIDER: buttondown
-      PLAYWRIGHT_BROWSERS_PATH: /opt/playwright-tools/browsers
     depends_on:
       db:
         condition: service_healthy