Feature: Automated configuration backups with scheduling

- Create/Download/Upload/Restore database backups (PostgreSQL and SQLite)
- Configurable data directory backups (via settings.py)
- Scheduled backups (daily/weekly) via Celery Beat
- Retention policy (keep last N backups)
- Token-based auth for async task polling
- X-Accel-Redirect support for nginx file serving
- Comprehensive tests

docker/nginx.conf

@@ -34,6 +34,13 @@ server {
         root /data;
     }
 
+    # Internal location for X-Accel-Redirect backup downloads
+    # Django handles auth, nginx serves the file directly
+    location /protected-backups/ {
+        internal;
+        alias /data/backups/;
+    }
+
     location /api/logos/(?<logo_id>\d+)/cache/ {
         proxy_pass http://127.0.0.1:5656;
         proxy_cache logo_cache;

docker/uwsgi.ini

@@ -20,6 +20,7 @@ module = dispatcharr.wsgi:application
 virtualenv = /dispatcharrpy
 master = true
 env = DJANGO_SETTINGS_MODULE=dispatcharr.settings
+env = USE_NGINX_ACCEL=true
 socket = /app/uwsgi.sock
 chmod-socket = 777
 vacuum = true