feat: ingest burst hardening — defer lifecycle/auth, workers, nginx (v0.5.5)

Defer notify_lifecycle and notify_auth_login after commit; SAC_UVICORN_WORKERS via sac-api-start.sh; nginx /api/v1/events timeout; mass-update confirm in Hosts UI.

deploy/nginx/sac.conf.example

@@ -44,6 +44,19 @@ server {
         proxy_read_timeout 960s;
     }
 
+    # Ingest burst: lifecycle/auth deferred в API, но POST всё равно может ждать notify_event/problem.
+    location = /api/v1/events {
+        proxy_pass http://sac_api;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_connect_timeout 30s;
+        proxy_send_timeout 120s;
+        proxy_read_timeout 120s;
+    }
+
     location / {
         proxy_pass http://sac_api;
         proxy_http_version 1.1;