Grotti 3.1.0: Bedarf-UI, Zeitfenster, HT/NT, Theme, Chrome-Fixes.

Bedarf in Sidebar/Material, Drucker-Zeitfenster und Tarif in Einstellungen, helles Theme; Legacy-Token und /api/drucker entfernt; SSE/SW-Fixes gegen hängende Navigation in Chrome.

web/static/api.js

@@ -28,13 +28,29 @@ async function api(path, options = {}) {
     headers.set("Content-Type", "application/json");
     body = JSON.stringify(options.json);
   }
-  const response = await fetch("/api/v1" + path, {
-    method,
-    headers,
-    body,
-    cache: "no-store",
-    credentials: "same-origin",
-  });
+  const timeoutMs = options.timeoutMs != null ? Number(options.timeoutMs) : 20000;
+  const ctrl = options.signal ? null : new AbortController();
+  const timer = ctrl && timeoutMs > 0
+    ? setTimeout(() => ctrl.abort(), timeoutMs)
+    : 0;
+  let response;
+  try {
+    response = await fetch("/api/v1" + path, {
+      method,
+      headers,
+      body,
+      cache: "no-store",
+      credentials: "same-origin",
+      signal: options.signal || (ctrl && ctrl.signal),
+    });
+  } catch (error) {
+    if (error && error.name === "AbortError") {
+      throw new Error("Zeitüberschreitung — Server antwortet nicht.");
+    }
+    throw error;
+  } finally {
+    if (timer) clearTimeout(timer);
+  }
   if (response.status === 401) {
     const here = location.pathname + location.search;
     if (!here.startsWith("/login") && !here.startsWith("/setup")) {