✨(scheduling) add callback from caldav to django for imip

docker/sabredav/sabredav.conf

@@ -8,12 +8,6 @@
         Options -Indexes +FollowSymLinks
     </Directory>
     
-    # Set REMOTE_USER from X-Forwarded-User header (set by Django proxy)
-    # This allows sabre/dav to use Apache auth backend
-    <IfModule mod_headers.c>
-        RequestHeader set REMOTE_USER %{HTTP:X-Forwarded-User}e env=HTTP_X_FORWARDED_USER
-    </IfModule>
-    
     # Rewrite rules for CalDAV
     RewriteEngine On
     RewriteCond %{REQUEST_FILENAME} !-f
@@ -23,6 +17,7 @@
     # Well-known CalDAV discovery
     RewriteRule ^\.well-known/caldav / [R=301,L]
     
-    ErrorLog ${APACHE_LOG_DIR}/sabredav_error.log
-    CustomLog ${APACHE_LOG_DIR}/sabredav_access.log combined
+    # Write errors to stderr for Docker logs
+    ErrorLog /proc/self/fd/2
+    # CustomLog /proc/self/fd/1 combined
 </VirtualHost>