fix: increase timeout for long-running AI chat requests

deployment/scripts/nginx-template.conf

@@ -34,6 +34,9 @@ server {
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header X-Forwarded-Proto $scheme;
         proxy_cache_bypass $http_upgrade;
+        proxy_read_timeout 300s;
+        proxy_connect_timeout 75s;
+        proxy_send_timeout 300s;
     }
 
     location /ws/ {

deployment/scripts/systemd-template.service

@@ -10,6 +10,8 @@ Environment="PATH=/var/www/bot/src/backend/venv/bin"
 ExecStart=/var/www/bot/src/backend/venv/bin/python /var/www/bot/src/backend/run.py
 Restart=always
 RestartSec=10
+TimeoutStartSec=300
+TimeoutStopSec=300
 
 EnvironmentFile=/var/www/bot/data/.env