Fix: .txz war gzip statt xz (tar czf → tar cf | xz -9)

macOS bsdtar cJf erzeugt gzip, nicht xz. Unraids upgradepkg
erwartet echtes xz. Fix: tar cf - | xz -9 -c.

Neues SHA256: a9ce6500a395dbfb7c531bf50b83176997738d78a3ad95520c45ae2470018e00
Größe: 24MB (statt 35MB gzip)

plugin/mua.plg

@@ -8,7 +8,7 @@
 <!ENTITY pluginLOC   "/boot/config/plugins/&name;">
 <!ENTITY emhttpLOC   "/usr/local/emhttp/plugins/&name;">
 <!ENTITY txzURL      "http://192.168.1.2:4000/michael/MUA-Mikes-Unraid-Agent/raw/branch/main/dist/mua-2026.08.18-x86_64-1.txz">
-<!ENTITY txzSHA256   "4189f9bd085806535306a59de5a4fe38abe3b883f87f9d900d2f977528913a1a">
+<!ENTITY txzSHA256   "a9ce6500a395dbfb7c531bf50b83176997738d78a3ad95520c45ae2470018e00">
 ]>
 
 <PLUGIN  name="&name;"

scripts/package.sh

@@ -103,11 +103,11 @@ cat > "${BUILD_DIR}/install/slack-desc" << DESCEOF
 |Build: ${BUILD_NUM}
 DESCEOF
 
-# 5. .txz erstellen (gzip-tar)
+# 5. .txz erstellen (tar + xz — NICHT gzip, Unraid erwartet echtes xz)
 mkdir -p "${DIST_DIR}"
 TXZ_NAME="${PKG_NAME}-${VERSION}-${ARCH}-${BUILD_NUM}.txz"
 echo "  Erstelle ${TXZ_NAME}..."
-( cd "${BUILD_DIR}" && tar czf "${DIST_DIR}/${TXZ_NAME}" . )
+( cd "${BUILD_DIR}" && tar cf - . | xz -9 -c > "${DIST_DIR}/${TXZ_NAME}" )
 
 echo ""
 echo "===================================================="