Aktualisiere die Version auf 1.4.3, füge Validierung für Saison-Slugs hinzu und implementiere ein Logging-System für Fehler und Informationen

server/utils/spielplan-data.js

@@ -1,6 +1,7 @@
 import { promises as fs } from 'fs'
 import path from 'path'
 import { getProjectPath, getServerDataPath } from './paths.js'
+import { error as loggerError, info as loggerInfo } from './logger.js'
 
 const SPIELPLAN_HEADERS = [
   'Termin',
@@ -76,10 +77,10 @@ function seasonSlugToLabel(slug) {
 }
 
 function logReadError(message, filePath, error) {
-  console.error(message, { filePath, error })
+  loggerError(message, { filePath, error })
 }
 
-function requireSeasonSlug(seasonSlug) {
+export function requireSeasonSlug(seasonSlug) {
   const value = String(seasonSlug || '')
   if (!SEASON_SLUG_PATTERN.test(value)) {
     throw new Error(`Ungueltiger Spielplan-Saison-Slug: ${value}`)
@@ -87,6 +88,15 @@ function requireSeasonSlug(seasonSlug) {
   return value
 }
 
+export function validateSeasonSlug(seasonSlug) {
+  try {
+    requireSeasonSlug(seasonSlug)
+    return true
+  } catch (_e) {
+    return false
+  }
+}
+
 function normalizeSpielplanCsvPath(csvPath) {
   const value = String(csvPath || '')
   if (value.includes('\0') || path.basename(value) !== 'spielplan.csv') {