Refactor file handling to prioritize internal data directories for backups and uploads; enhance error handling and logging for metadata and CSV operations.

server/api/mannschaften.get.js

@@ -15,7 +15,10 @@ export default defineEventHandler(async (event) => {
     const cwd = process.cwd()
     const filename = 'mannschaften.csv'
 
+    // Prefer server/data, then .output/public/data, then public/data
     const candidates = [
+      path.join(cwd, '.output/server/data', filename),
+      path.join(cwd, 'server/data', filename),
       path.join(cwd, '.output/public/data', filename),
       path.join(cwd, 'public/data', filename),
       path.join(cwd, '../.output/public/data', filename),