File manager: open a chat in a folder

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

web/src/i18n/de.ts

@@ -85,6 +85,7 @@ export const de: Messages = {
   "files.newFolderName": "Ordnername:",
   "files.renameTo": "Neuer Name:",
   "files.copyTo": "Name der Kopie:",
+  "files.chatHere": "Chat hier öffnen",
   "files.rename": "Umbenennen",
   "files.duplicate": "Duplizieren",
   "files.download": "Herunterladen",