Folder picker: create a new folder (new automation, new chat)

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

web/src/i18n/de.ts

@@ -554,6 +554,7 @@ export const de: Messages = {
   "jobs.tplMode": "Modus",
   "new.title": "Neue Session",
   "new.directory": "Projektverzeichnis",
+  "new.invalidFolderName": "Ordnernamen dürfen kein „/“ enthalten.",
   "new.up": "Hoch",
   "new.noSubdirs": "Keine Unterverzeichnisse",
   "new.model": "Modell",

web/src/i18n/en.ts

@@ -553,6 +553,7 @@ export const en = {
   "jobs.tplMode": "Mode",
   "new.title": "New session",
   "new.directory": "Project directory",
+  "new.invalidFolderName": "Folder names cannot contain “/”.",
   "new.up": "Up",
   "new.noSubdirs": "No subdirectories",
   "new.model": "Model",