fix(import): prefer seasonal mannschaften csv for tables

server/utils/spielklassen-tables-import.js

@@ -136,13 +136,19 @@ function sanitizeSeasonSlug(value) {
   return /^\d{2}--\d{2}$/.test(seasonSlug) ? seasonSlug : null
 }
 
-async function resolveMannschaftenCsvPath() {
-  const candidates = [
-    getServerDataPath('public-data', 'mannschaften.csv'),
-    getServerDataPath('mannschaften.csv'),
-    getProjectPath('.output', 'public', 'data', 'mannschaften.csv'),
-    getProjectPath('public', 'data', 'mannschaften.csv')
-  ]
+async function resolveMannschaftenCsvPath(seasonSlug) {
+  const seasonalName = sanitizeSeasonSlug(seasonSlug) ? `mannschaften_${seasonSlug}.csv` : null
+  const fileNames = seasonalName ? [seasonalName, 'mannschaften.csv'] : ['mannschaften.csv']
+
+  const candidates = []
+  for (const fileName of fileNames) {
+    candidates.push(
+      getServerDataPath('public-data', fileName),
+      getServerDataPath(fileName),
+      getProjectPath('.output', 'public', 'data', fileName),
+      getProjectPath('public', 'data', fileName)
+    )
+  }
 
   for (const candidate of candidates) {
     if (await fileExists(candidate)) return candidate
@@ -204,7 +210,7 @@ async function fetchTable(url) {
 export async function importLeagueTables(options = {}) {
   const today = options.today ?? new Date()
   const season = getSpieljahrForDate(today)
-  const csvPath = await resolveMannschaftenCsvPath()
+  const csvPath = await resolveMannschaftenCsvPath(season.seasonSlug)
   const csvContent = await fs.readFile(csvPath, 'utf8')
   const teams = extractRowsWithTableUrl(csvContent)