updated readme and example

.env.example

@@ -17,11 +17,22 @@ ADMIN_URL="admin"
 
 # --- Celery / Redis ---
 # Broker and result backend for background jobs. Docker compose defaults to the bundled redis service.
+# DB 0 is used by Celery; DB 1 is used by Django cache (see DJANGO_CACHE_URL below).
 CELERY_BROKER_URL=redis://redis:6379/0
 CELERY_RESULT_BACKEND=redis://redis:6379/0
 # Run tasks synchronously (useful for local dev or CI). Unset in production.
 # CELERY_TASK_ALWAYS_EAGER=true
 
+# Django cache backend URL. Shares the redis instance on a different DB number.
+DJANGO_CACHE_URL=redis://redis:6379/1
+
+# Flower (Celery monitoring UI) — exposed on :5555. Format: "user:password".
+# CHANGE BEFORE DEPLOY.
+FLOWER_BASIC_AUTH=admin:change-me
+
+# Worker/beat containers set this in docker-compose.yml; do not set globally.
+# SKIP_INIT=true
+
 # --- Advanced Networking (Optional, derived from DOMAIN if unset) ---
 # ALLOWED_HOSTS=example.com,another-domain.com
 # CSRF_TRUSTED_ORIGINS=https://example.com