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/json5/lib/unicode.d.ts

@@ -0,0 +1,3 @@
+export declare const Space_Separator: RegExp
+export declare const ID_Start: RegExp
+export declare const ID_Continue: RegExp