fix: Update nginx config to use dynamic DNS resolution

- Replace upstream blocks with resolver directive
- Use variables for backend addresses to avoid startup errors
- Simplify configuration with single server block
- Add health check endpoint

server/api/node_modules/undefsafe/.jshintrc

@@ -0,0 +1,16 @@
+{
+  "browser": false,
+  "camelcase": true,
+  "curly": true,
+  "devel": true,
+  "eqeqeq": true,
+  "forin": true,
+  "indent": 2,
+  "noarg": true,
+  "node": true,
+  "quotmark": "single",
+  "undef": true,
+  "strict": false,
+  "unused": true
+}
+