fix: increase Apache timeouts for large file uploads (>40MB)

- Add Timeout 3600 (1h) for long-running uploads
- Enable KeepAlive with 300s timeout to maintain connections
- Set MaxKeepAliveRequests to 200 for chunked uploads
- Fixes sync client errors on files larger than 40MB

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

apache/nextcloud.conf

@@ -8,6 +8,12 @@ RemoteIPTrustedProxy 192.168.0.0/16
 # Activer la confiance des en-têtes X-Forwarded-Proto
 SetEnvIf X-Forwarded-Proto "https" HTTPS=on
 
+# Timeouts pour gros fichiers (>40MB)
+Timeout 3600
+KeepAlive On
+KeepAliveTimeout 300
+MaxKeepAliveRequests 200
+
 <Directory /var/www/html/>
     Options FollowSymLinks MultiViews
     AllowOverride All