fix: proxy frontend API requests to backend

docs/deployment.md

@@ -24,6 +24,8 @@ docker compose run --rm backend python manage.py createsuperuser
 
 PostgreSQL is not published to the host.
 
+During local development, the Angular dev server proxies `/api`, `/api-auth`, and `/admin` to the backend container.
+
 ## Volumes
 
 - `postgres_data`: PostgreSQL data.

docs/runbook.md

@@ -24,6 +24,7 @@ docker compose run --rm backend python manage.py createsuperuser
 
 - If the frontend shows an authentication error, sign in through `http://localhost:8000/admin/` or DRF login first.
 - If the frontend serves a blank page, check `docker compose logs frontend`. Cache permission errors should be resolved by the configured `/tmp/angular-cache` path; restart with `docker compose up -d frontend`.
+- If the frontend loads but player data does not, confirm that `frontend/proxy.conf.json` is active and restart the frontend container.
 - If backend startup fails, check database readiness with `docker compose logs db`.
 - If dependencies change, rebuild with `docker compose build --no-cache backend frontend`.