Preview: Admin-API und Modus-Vorgabe

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

server/services/previewLogs.js

@@ -31,6 +31,8 @@ export async function saveRunLog(projectId, lines, env) {
   return runFile
 }
 
+export const isRunFile = (name) => FILE_RE.test(String(name || ''))
+
 // Neueste zuerst
 export async function listRunLogs(projectId) {
   let files