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/util.d.ts

@@ -0,0 +1,5 @@
+export declare function isSpaceSeparator(c?: string): boolean
+export declare function isIdStartChar(c?: string): boolean
+export declare function isIdContinueChar(c?: string): boolean
+export declare function isDigit(c?: string): boolean
+export declare function isHexDigit(c?: string): boolean