Fix some issues 2

frontend/nginx.conf

@@ -93,13 +93,11 @@ server {
     }
 
     # Main location block for SPA routing
+    # Note: JS/CSS files are handled by specific location blocks above with try_files $uri =404
+    # This ensures missing assets return 404 instead of index.html (which causes MIME type errors)
     location / {
-        try_files $uri $uri/ @fallback;
-    }
-
-    # Fallback for SPA routing - serve index.html
-    location @fallback {
-        rewrite ^.*$ /index.html last;
+        # Don't fallback to index.html for asset files - they should 404 if missing
+        try_files $uri $uri/ /index.html;
     }
 
     # Health check endpoint