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

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

CHANGELOG.md

@@ -3,6 +3,13 @@
 All notable changes to CodeCraft. Versions follow [Semantic Versioning](https://semver.org/);
 until 1.0, minor versions may contain breaking changes.
 
+## [Unreleased]
+
+### Added
+
+- **New folder in the folder picker:** creating an automation or a chat, *New folder* creates a
+  subfolder of the shown folder and selects it.
+
 ## [v202611-00013] – 2026-11-10
 
 ### Added

web/src/components/NewSession.tsx

@@ -1,6 +1,7 @@
 import { Icon } from "./Icon";
 import { useEffect, useMemo, useRef, useState, type ReactNode } from "react";
 import { post, uploadFile } from "../api";
+import { promptDialog, toast } from "../dialogs";
 import { useAgents, useFetch } from "../hooks";
 import { useT, type Key } from "../i18n";
 import type { ImageData } from "../types";
@@ -602,6 +603,20 @@ export function FolderPicker({ path, onPick }: { path: string; onPick: (p: strin
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [listing?.path]);
   const rel = listing ? listing.path.slice(listing.workspace.length) || "/" : "";
+  /** Create a subfolder of the shown folder and select it. */
+  const newFolder = async () => {
+    if (!listing) return;
+    const name = (await promptDialog({ title: t("files.newFolder"), message: t("files.newFolderName") }))?.trim();
+    if (!name) return;
+    if (name.includes("/") || name === "." || name === "..") return toast(t("new.invalidFolderName"));
+    const target = `${listing.path.replace(/\/$/, "")}/${name}`;
+    try {
+      await post("/files/create", { path: target, dir: true });
+      setBrowse(target);
+    } catch (e: any) {
+      toast(e.message);
+    }
+  };
   return (
     <div className="wiz-picker">
       {roots.length > 1 && (
@@ -622,6 +637,11 @@ export function FolderPicker({ path, onPick }: { path: string; onPick: (p: strin
             <Icon name="arrow-up" /> {t("new.up")}
           </button>
         )}
+        {listing && (
+          <button className="small" onClick={() => void newFolder()}>
+            <Icon name="plus" /> {t("files.newFolder")}
+          </button>
+        )}
       </div>
       <div className="dir-list">
         {listing?.dirs.length === 0 && <div className="empty" style={{ padding: 16 }}>{t("new.noSubdirs")}</div>}

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",

web/src/whatsnew.ts

@@ -3,6 +3,10 @@
  * under "unreleased"; scripts/release.sh renames the key to the release version.
  */
 export const WHATS_NEW: Record<string, { en: string[]; de: string[] }> = {
+  unreleased: {
+    en: ["Folder picker (new automation, new chat): create a new folder right there"],
+    de: ["Ordnerauswahl (neue Automatisierung, neuer Chat): direkt einen neuen Ordner anlegen"],
+  },
   "202611-00013": {
     en: [
       "New automation editor: instructions, a graphical schedule and an assistant chat that writes the instructions with you",