Add standalone build and packaging workflow docs/scripts

build/package_macos.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+APP_BUNDLE="dist/PDFtoICS.app"
+VERSION="$(tr -d '[:space:]' < version.txt)"
+OUT_DIR="release"
+ARCHIVE_NAME="PDFtoICS-macos-v${VERSION}.zip"
+
+if [ ! -d "$APP_BUNDLE" ]; then
+    echo "❌ App-Bundle nicht gefunden: $APP_BUNDLE"
+    echo "💡 Bitte zuerst ausführen: ./build/build_macos.sh"
+    exit 1
+fi
+
+mkdir -p "$OUT_DIR"
+
+echo "📦 Erstelle Archiv: $OUT_DIR/$ARCHIVE_NAME"
+rm -f "$OUT_DIR/$ARCHIVE_NAME"
+(cd dist && zip -r "../$OUT_DIR/$ARCHIVE_NAME" "PDFtoICS.app" >/dev/null)
+
+echo "✅ Fertig: $OUT_DIR/$ARCHIVE_NAME"