refactor: rename email-server-worker to email-worker

Rename directory from email-server-worker to email-worker for clarity and brevity. Update all references in CLAUDE.md documentation.

email-worker/src/routes/finalErrorRouter.ts

@@ -0,0 +1,34 @@
+import { ErrorRequestHandler, Request, Response } from "express";
+import { HttpError } from "http-errors";
+import { createLogger } from '../lib/logger';
+import { NgitLocals } from "../types/NgitLocals";
+
+const consoleLog = createLogger("server:server");
+
+/**
+ * Router koji se izvršava u slučaju grube greške koja nije obrađena nigdje prije
+ * @param err error objekt
+ * @param req express request
+ * @param res express response
+ * @param next 
+ */
+export const finalErrorRouter:ErrorRequestHandler = async (err:HttpError, req, res, next) => {
+
+    const errorLogText:string = JSON.stringify({ message:err.message, name:err.name, stack:err.stack });
+
+    consoleLog(`Server Error ${err.status}\n${errorLogText}`);          
+
+    // `headersSent` će biti TRUE ako je router kod kojeg se dogodila greška već poslao header-e
+    // > ako ih probam ponovo postaviti, to će baciti grešku i u ovom slučaju SRUŠITI SERVER - to ne smijemo dopustiti
+    if(!res.headersSent) {
+        res.status(err.status);
+        res.setHeader('Content-Type', "text/html");
+        res.end(`unhandled server error`);
+    } else {
+        // AKO nije pozvan `end` - pozovi ga i završi obradu zahtjeva
+        // ... u suprotnom će konekcija ostati otvorena do timeout-a
+        if(!res.writableEnded) {
+            res.end();
+        }
+    }
+};