Fix service worker update notification by disabling cache for SW and index.html

Author: nickprotop

cloud/deploy/nginx/blazor.conf

@@ -25,6 +25,18 @@ server {
                application/xml application/xml+rss text/javascript application/wasm
                application/octet-stream;
 
+    # Service worker - must NOT be cached (enables update detection)
+    location = /service-worker.js {
+        expires -1;
+        add_header Cache-Control "no-store, no-cache, must-revalidate";
+    }
+
+    # index.html - should not be cached (SPA entry point)
+    location = /index.html {
+        expires -1;
+        add_header Cache-Control "no-store, no-cache, must-revalidate";
+    }
+
     # Blazor framework files (long cache, immutable hashes)
     location /_framework/ {
         expires 1y;