Füge Unterstützung für QTTR-Listenaktualisierungen hinzu: Implementiere Push-Benachrichtigung für aktualisierte QTTR-Listen und verbessere die Importlogik.

server/utils/qttr-import.js

@@ -1,6 +1,6 @@
 import { promises as fs } from 'fs'
 import { getServerDataPath } from './paths.js'
-import { sendOwnTtrChangePush } from './push-notifications.js'
+import { sendOwnTtrChangePush, sendQttrListUpdatedPush } from './push-notifications.js'
 import { fetchClubRankings } from './mytischtennis-client.js'
 import { readMyTischtennisConnection, saveMyTischtennisConnection } from './mytischtennis-connection.js'
 
@@ -244,6 +244,8 @@ async function importAuthenticatedTtrValues(connection) {
   }).filter(row => row.playerName && (row.currentTtr != null || row.currentQttr != null))
 
   if (!rows.length) throw new Error('Keine verwertbaren TTR-Werte in der myTischtennis-Rangliste gefunden.')
+  const previousQttrSignature = qttrListSignature(previousPayload.rows)
+  const nextQttrSignature = qttrListSignature(rows)
   const importedAt = new Date().toISOString()
   const payload = {
     format: 'harheimertc.qttr.v2', importedAt,
@@ -262,6 +264,21 @@ async function importAuthenticatedTtrValues(connection) {
       : []
   })
   await sendOwnTtrChangePush(changes)
+  if (previousQttrSignature && previousQttrSignature !== nextQttrSignature) {
+    await sendQttrListUpdatedPush({ importedAt, rowCount: rows.length })
+  }
   await saveMyTischtennisConnection({ ...connection, lastSuccessfulImportAt: importedAt, lastImportError: null })
   return { outputFile: OUTPUT_FILE, tableCount: 1, ...payload }
 }
+
+function qttrListSignature(rows) {
+  if (!Array.isArray(rows) || rows.length === 0) return ''
+  return rows
+    .map(row => [
+      String(row?.playerName || '').trim().toLocaleLowerCase('de-DE'),
+      row?.rank ?? '',
+      row?.currentQttr ?? ''
+    ].join('|'))
+    .sort()
+    .join('\n')
+}