fix: remove server-snippet from ingress (blocked by nginx controller), doc stress-test results

deployments/k8s/ingress.yaml

@@ -1,6 +1,6 @@
 # deployments/k8s/ingress.yaml
 # Ingress для shared-sqs на домене qu.kube5s.ru
-# Created: 2026-04-09, Updated: 2026-04-11
+# Created: 2026-04-09, Updated: 2026-04-12
 apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
@@ -16,8 +16,9 @@ metadata:
     # Решение: proxy-request-buffering=off стримит body напрямую в backend без ожидания полного тела.
     nginx.ingress.kubernetes.io/client-body-buffer-size: "512k"
     nginx.ingress.kubernetes.io/proxy-request-buffering: "off"
-    nginx.ingress.kubernetes.io/server-snippet: |
-      client_body_timeout 120s;
+    # server-snippet удалён 2026-04-12: nginx ingress controller v1.x+ блокирует
+    # эту аннотацию как "risky" (ServerSnippet contains risky annotation).
+    # client_body_timeout задаётся через ConfigMap ingress controller.
 spec:
   ingressClassName: nginx
   rules: