Add subtle interface polish and clean URLs

server.js

@@ -70,6 +70,18 @@ const MIME = {
   ".woff2": "font/woff2"
 };
 
+const CLEAN_ROUTES = {
+  "/techday": "/techday.html",
+  "/gamejam": "/gamejam.html",
+  "/impressum": "/impressum.html",
+  "/datenschutz": "/datenschutz.html"
+};
+
+function redirect(res, location) {
+  res.writeHead(308, { Location: location });
+  res.end();
+}
+
 /* ---------- Lead-Speicher vorbereiten ---------- */
 function ensureLeadStore() {
   if (!fs.existsSync(LEADS_DIR)) fs.mkdirSync(LEADS_DIR, { recursive: true });
@@ -112,9 +124,31 @@ function saveLead(lead) {
 
 /* ---------- Statische Dateien ---------- */
 function serveStatic(req, res) {
-  let urlPath = decodeURIComponent(req.url.split("?")[0]);
+  let parsedUrl;
+  try {
+    parsedUrl = new URL(req.url, "http://local");
+  } catch (e) {
+    res.writeHead(400).end("Bad Request");
+    return;
+  }
+
+  let urlPath = decodeURIComponent(parsedUrl.pathname);
   if (urlPath === "/") urlPath = "/index.html";
 
+  if (urlPath.endsWith("/") && CLEAN_ROUTES[urlPath.slice(0, -1)]) {
+    redirect(res, urlPath.slice(0, -1) + parsedUrl.search);
+    return;
+  }
+
+  for (const cleanPath of Object.keys(CLEAN_ROUTES)) {
+    if (urlPath === CLEAN_ROUTES[cleanPath]) {
+      redirect(res, cleanPath + parsedUrl.search);
+      return;
+    }
+  }
+
+  if (CLEAN_ROUTES[urlPath]) urlPath = CLEAN_ROUTES[urlPath];
+
   /* Path-Traversal verhindern */
   const filePath = path.normalize(path.join(PUBLIC_DIR, urlPath));
   if (!filePath.startsWith(PUBLIC_DIR)) {