Feature: Discord-Ping in Benachrichtigungen (optionale Erwaehnung)

Neues Settings-Feld "Discord-Ping" unter der Webhook-URL: User-ID, @everyone
oder @here. Wird jeder Webhook-Nachricht vorangestellt, damit Discord wirklich
pingt statt nur still in den Kanal zu schreiben. Eine nackte Zahl wird als
<@id> verpackt (nur so pingt eine User-Erwaehnung); @everyone/@here und fertige
<@...>-Mentions gehen unveraendert durch. Default leer = Verhalten wie bisher.
5 neue Tests (Normalisierung + Content-Prefix).

src/main/constants.ts

@@ -108,6 +108,7 @@ export function defaultSettings(): AppSettings {
     confirmDeleteSelection: true,
     backupIncludeDownloads: false,
     notifyUrl: "",
+    notifyMention: "",
     notifyOnPackageCompleted: false,
     notifyOnPackageFailed: false,
     notifyOnRunFinished: false,

src/main/download-manager.ts

@@ -10497,7 +10497,8 @@ export class DownloadManager extends EventEmitter {
     this.notifiedPackages.add(pkg.id);
     void sendNotification(url, {
       title: kind === "completed" ? "✅ Paket fertig" : "❌ Paket fehlgeschlagen",
-      message: `${pkg.name}\n${detail}`
+      message: `${pkg.name}\n${detail}`,
+      mention: this.settings.notifyMention
     });
   }
 
@@ -12121,7 +12122,8 @@ export class DownloadManager extends EventEmitter {
     if (this.settings.notifyOnRunFinished && total > 0) {
       void sendNotification(this.settings.notifyUrl, {
         title: failed > 0 ? "⚠️ Durchlauf beendet" : "🏁 Durchlauf beendet",
-        message: `${success}/${total} erfolgreich, ${failed} fehlgeschlagen, ${cancelled} abgebrochen\nDauer ${duration}s, Durchschnitt ${humanSize(avgSpeed)}/s`
+        message: `${success}/${total} erfolgreich, ${failed} fehlgeschlagen, ${cancelled} abgebrochen\nDauer ${duration}s, Durchschnitt ${humanSize(avgSpeed)}/s`,
+        mention: this.settings.notifyMention
       });
     }
     this.runItemIds.clear();

src/main/notify.ts

@@ -3,6 +3,7 @@ import { logger } from "./logger";
 export interface NotifyPayload {
   title: string;
   message: string;
+  mention?: string;
 }
 
 const NOTIFY_TIMEOUT_MS = 5000;
@@ -12,8 +13,22 @@ export function isNotifyUrlValid(url: string): boolean {
   return /^https?:\/\/\S+$/i.test(String(url || "").trim());
 }
 
+// Accepts a bare Discord user ID (wrapped as <@id> so it actually pings),
+// @everyone/@here, or an already-formed <@...>/<@&...> mention as-is.
+export function normalizeDiscordMention(raw: string): string {
+  const text = String(raw || "").trim();
+  if (!text) {
+    return "";
+  }
+  if (/^\d{5,}$/.test(text)) {
+    return `<@${text}>`;
+  }
+  return text;
+}
+
 export function buildNotifyRequest(url: string, payload: NotifyPayload): { url: string; init: RequestInit } {
-  const content = `**${payload.title}**\n${payload.message}`.slice(0, 2000);
+  const mention = normalizeDiscordMention(payload.mention || "");
+  const content = `${mention ? `${mention} ` : ""}**${payload.title}**\n${payload.message}`.slice(0, 2000);
   return {
     url: String(url || "").trim(),
     init: {

src/main/storage.ts

@@ -460,6 +460,7 @@ export function normalizeSettings(settings: AppSettings): AppSettings {
     confirmDeleteSelection: settings.confirmDeleteSelection !== undefined ? Boolean(settings.confirmDeleteSelection) : defaults.confirmDeleteSelection,
     backupIncludeDownloads: settings.backupIncludeDownloads !== undefined ? Boolean(settings.backupIncludeDownloads) : defaults.backupIncludeDownloads,
     notifyUrl: asText(settings.notifyUrl) || defaults.notifyUrl,
+    notifyMention: asText(settings.notifyMention) || defaults.notifyMention,
     notifyOnPackageCompleted: settings.notifyOnPackageCompleted !== undefined ? Boolean(settings.notifyOnPackageCompleted) : defaults.notifyOnPackageCompleted,
     notifyOnPackageFailed: settings.notifyOnPackageFailed !== undefined ? Boolean(settings.notifyOnPackageFailed) : defaults.notifyOnPackageFailed,
     notifyOnRunFinished: settings.notifyOnRunFinished !== undefined ? Boolean(settings.notifyOnRunFinished) : defaults.notifyOnRunFinished,