diff --git a/apps/desktop/e2e/sidebar-workspaces.spec.ts b/apps/desktop/e2e/sidebar-workspaces.spec.ts
index 41339b60..00f2e854 100644
--- a/apps/desktop/e2e/sidebar-workspaces.spec.ts
+++ b/apps/desktop/e2e/sidebar-workspaces.spec.ts
@@ -51,6 +51,42 @@ test("each project has notes, and a second workspace groups the sidebar's projec
   }
 });
 
+test("Move to new workspace makes the workspace and moves the project in one step; Escape makes nothing", async () => {
+  const { home, repo } = seedHome();
+  const project = path.basename(repo);
+  const { app, page } = await launch(home);
+  try {
+    await expect.poll(() => fs.existsSync(path.join(home, "notes", "Personal", project, ".modex-project.json"))).toBe(true);
+    const field = page.getByRole("textbox", { name: "New workspace name" });
+
+    // Escape leaves everything as it was.
+    await tid(page, "project-menu").click();
+    await tid(page, "project-new-workspace").click();
+    await expect(field).toBeFocused();
+    await field.fill("Nowhere");
+    await page.keyboard.press("Escape");
+    await expect(field).toHaveCount(0);
+    expect(fs.existsSync(path.join(home, "notes", "Nowhere"))).toBe(false);
+    await expect(tid(page, "workspace-group")).toHaveCount(0);
+
+    // With only the default workspace, the project can still go to a new one.
+    await tid(page, "project-menu").click();
+    await tid(page, "project-new-workspace").click();
+    await field.fill("Clients");
+    await page.keyboard.press("Enter");
+    await expect(tid(page, "workspace-group")).toHaveCount(1);
+    await expect(tid(page, "workspace-group")).toHaveAccessibleName("Clients");
+    await expect(tid(page, "workspace-group").locator('[data-testid="project"]')).toHaveCount(1);
+    await expect(field).toHaveCount(0);
+    expect(fs.existsSync(path.join(home, "notes", "Clients", project, ".modex-project.json"))).toBe(true);
+    expect(fs.existsSync(path.join(home, "notes", "Personal", project))).toBe(false);
+  } finally {
+    await app.close();
+    fs.rmSync(home, { recursive: true, force: true });
+    fs.rmSync(repo, { recursive: true, force: true });
+  }
+});
+
 test("Open notes consumes its focus across polls and remounts, and accepts a fresh request", async () => {
   const { home, repo } = seedHome();
   const project = path.basename(repo);
diff --git a/apps/desktop/src/main/commands.ts b/apps/desktop/src/main/commands.ts
index 84d98bc5..124593f6 100644
--- a/apps/desktop/src/main/commands.ts
+++ b/apps/desktop/src/main/commands.ts
@@ -68,6 +68,7 @@ export function registerCommands(handle: RegisterCommand, {
   handle("notes:workspaces", () => store.space.workspaces());
   handle("project:notes", ({ projectId }) => { const project = store.project(projectId); if (!project) throw new Error("This project is no longer in Modex."); return store.space.linkProject(project); });
   handle("project:workspace", ({ projectId, workspaceId }) => { const project = store.project(projectId); if (!project) throw new Error("This project is no longer in Modex."); store.space.moveNodes([store.space.linkProject(project).id], workspaceId); return store.space.workspaces(); });
+  handle("project:new-workspace", ({ projectId, name }) => { const project = store.project(projectId); if (!project) throw new Error("This project is no longer in Modex."); return store.space.moveProjectToNewWorkspace(project, name); });
   handle("notes:reveal", () => { throw new Error("Reveal in Finder is available in the desktop app."); });
   handle("notes:open", () => { throw new Error("Opening files is available in the desktop app."); });
   handle("notes:import", () => { throw new Error("Importing files is available in the desktop app."); });
diff --git a/apps/desktop/src/main/engine/notes-store.ts b/apps/desktop/src/main/engine/notes-store.ts
index 87b77d27..050eb69a 100644
--- a/apps/desktop/src/main/engine/notes-store.ts
+++ b/apps/desktop/src/main/engine/notes-store.ts
@@ -452,6 +452,19 @@ export class NotesStore implements SpacePagesStore {
     return created;
   }
 
+  /** A new workspace with this Modex project's notes in it, in one step. If the move fails, the new, empty workspace goes again. */
+  moveProjectToNewWorkspace(project: LinkedProject, name: string): NotesWorkspaceSummary[] {
+    if (!name.trim()) throw new Error("Name the workspace.");
+    const notes = this.linkProject(project);
+    const workspace = this.createWorkspace(name);
+    try { this.moveNodes([notes.id], workspace.id); }
+    catch (err) {
+      try { this.deleteEmpty(workspace.id); } catch { /* the move's own error is the one to report */ }
+      throw err;
+    }
+    return this.workspaces();
+  }
+
   /** A removed Modex project leaves its notes where they are, ready to link again. */
   detachProject(modexProjectId: string): void {
     const node = this.projectFor(modexProjectId);
diff --git a/apps/desktop/src/main/index.ts b/apps/desktop/src/main/index.ts
index a1e81dbe..847b946a 100644
--- a/apps/desktop/src/main/index.ts
+++ b/apps/desktop/src/main/index.ts
@@ -753,6 +753,7 @@ handle("notes:delete", ({ id }) => { store.space.deleteEmpty(id); return store.s
 handle("notes:workspaces", () => store.space.workspaces());
 handle("project:notes", ({ projectId }) => { const project = store.project(projectId); if (!project) throw new Error("This project is no longer in Modex."); return store.space.linkProject(project); });
 handle("project:workspace", ({ projectId, workspaceId }) => { const project = store.project(projectId); if (!project) throw new Error("This project is no longer in Modex."); store.space.moveNodes([store.space.linkProject(project).id], workspaceId); return store.space.workspaces(); });
+handle("project:new-workspace", ({ projectId, name }) => { const project = store.project(projectId); if (!project) throw new Error("This project is no longer in Modex."); return store.space.moveProjectToNewWorkspace(project, name); });
 handle("notes:reveal", ({ id }) => shell.showItemInFolder(store.space.pathOf(id)), { localOnly: true });
 handle("notes:open", async ({ id }) => { const error = await shell.openPath(store.space.pathOf(id)); if (error) throw new Error(error); }, { localOnly: true });
 handle("notes:import", async ({ targetId, paths }) => {
diff --git a/apps/desktop/src/renderer/App.tsx b/apps/desktop/src/renderer/App.tsx
index e76497dc..c4df9218 100644
--- a/apps/desktop/src/renderer/App.tsx
+++ b/apps/desktop/src/renderer/App.tsx
@@ -538,6 +538,7 @@ export function App({ persistPreferences = true, spaceEnabled = true, analyticsE
   }, [projectKey, surface, spaceEnabled]);
   const openNotes = (projectId: string) => { setOpenProject({ projectId, nonce: Date.now() }); setSpaceOpened(true); setSurface("space"); };
   const moveToWorkspace = (projectId: string, workspaceId: string) => void act(async () => { setWorkspaces(await bridge.invoke("project:workspace", { projectId, workspaceId })); });
+  const moveToNewWorkspace = (projectId: string, name: string) => void act(async () => { setWorkspaces(await bridge.invoke("project:new-workspace", { projectId, name })); });
   const act = async <T,>(fn: () => Promise<T>, { retry = true }: { retry?: boolean } = {}): Promise<T | undefined> => {
     try {
       if (nativeHoldRef.current || nativeLoading || nativeRecoveryError) throw new Error("Wait for draft recovery to finish.");
@@ -928,7 +929,7 @@ export function App({ persistPreferences = true, spaceEnabled = true, analyticsE
             onRemoveProject={removeProject}
             unsent={unsent}
             agents={activeAgents}
-            {...(spaceEnabled ? { workspaces, onOpenNotes: openNotes, onMoveToWorkspace: moveToWorkspace } : {})}
+            {...(spaceEnabled ? { workspaces, onOpenNotes: openNotes, onMoveToWorkspace: moveToWorkspace, onMoveToNewWorkspace: moveToNewWorkspace } : {})}
           />
         )}
         <main className={`main${surface === "space" && spaceChatOpen ? " space-chat" : ""}`} data-testid={surface === "space" && spaceChatOpen ? "space-chat" : "main"}>
diff --git a/apps/desktop/src/renderer/components/Sidebar.tsx b/apps/desktop/src/renderer/components/Sidebar.tsx
index de37b50f..dcf90be3 100644
--- a/apps/desktop/src/renderer/components/Sidebar.tsx
+++ b/apps/desktop/src/renderer/components/Sidebar.tsx
@@ -31,12 +31,16 @@ interface Props {
   /** Opens the project's notes in Space. */
   onOpenNotes?: (projectId: string) => void;
   onMoveToWorkspace?: (projectId: string, workspaceId: string) => void;
+  /** Makes a notes workspace with this name and moves the project into it. */
+  onMoveToNewWorkspace?: (projectId: string, name: string) => void;
 }
 
 /** Threads shown per project before "Show more". */
 export const THREADS_PER_PROJECT = 5;
 
-export function Sidebar({ state, selected, onSelect, draftProjectId, onAddProject, onNewChat, onNewThread, onDeleteThread, onArchiveThread, onRemoveProject, unsent, agents = [], workspaces, onOpenNotes, onMoveToWorkspace }: Props) {
+export function Sidebar({ state, selected, onSelect, draftProjectId, onAddProject, onNewChat, onNewThread, onDeleteThread, onArchiveThread, onRemoveProject, unsent, agents = [], workspaces, onOpenNotes, onMoveToWorkspace, onMoveToNewWorkspace }: Props) {
+  /** The project whose "Move to new workspace" name field is open, and what is typed in it. */
+  const [naming, setNaming] = useState<{ projectId: string; value: string } | null>(null);
   const [workspaceCollapsed, setWorkspaceCollapsed] = useState<Record<string, boolean>>({});
   const [collapsed, setCollapsed] = useState<Record<string, boolean>>({});
   const [expanded, setExpanded] = useState<Record<string, boolean>>({});
@@ -152,10 +156,38 @@ export function Sidebar({ state, selected, onSelect, draftProjectId, onAddProjec
                   <RowMenu label="Project actions" testId="project-menu">
                     {onOpenNotes && <MenuItem data-testid="project-notes" onClick={() => onOpenNotes(p.id)}>Open notes</MenuItem>}
                     {grouped && onMoveToWorkspace && ordered.filter(w => w.id !== homeOf(p.id)?.id).map(w => <MenuItem key={w.id} onClick={() => onMoveToWorkspace(p.id, w.id)}>Move to {w.name}</MenuItem>)}
+                    {onMoveToNewWorkspace && <MenuItem data-testid="project-new-workspace" onClick={() => setNaming({ projectId: p.id, value: "" })}>Move to new workspace…</MenuItem>}
                     <MenuItem data-testid="project-remove" className="danger" onClick={() => onRemoveProject(p.id)}>Remove project</MenuItem>
                   </RowMenu>
                 </span>
               </div>
+              {naming?.projectId === p.id && (
+                <div className="sidebar-search workspace-name">
+                  <Icon name="grid" size={14} />
+                  {/* Enter makes the workspace and moves the project; Escape or leaving the field makes nothing. */}
+                  <SecretInput
+                    autoFocus
+                    aria-label="New workspace name"
+                    placeholder="Workspace name"
+                    value={naming.value}
+                    spellCheck={false}
+                    onChange={(e) => setNaming({ projectId: p.id, value: e.target.value })}
+                    onKeyDown={(e) => {
+                      if (e.key === "Enter") {
+                        e.preventDefault();
+                        const name = naming.value.trim();
+                        setNaming(null);
+                        if (name) onMoveToNewWorkspace?.(p.id, name);
+                      } else if (e.key === "Escape") {
+                        e.preventDefault();
+                        e.stopPropagation();
+                        setNaming(null);
+                      }
+                    }}
+                    onBlur={() => setNaming(null)}
+                  />
+                </div>
+              )}
               {!isCollapsed && (
                 <ul className="threads">
                   {all.length === 0 && <li className="side-hint small">No threads</li>}
diff --git a/apps/desktop/src/renderer/styles.css b/apps/desktop/src/renderer/styles.css
index a802c0ae..c8a1efea 100644
--- a/apps/desktop/src/renderer/styles.css
+++ b/apps/desktop/src/renderer/styles.css
@@ -385,6 +385,7 @@ body[data-streamer-mode="true"] ::search-text { color: transparent; background-c
 .sidebar-search:focus-within { border-color: var(--accent); }
 .sidebar-search input { flex: 1; min-width: 0; border: 0; outline: none; background: transparent; color: var(--text-1); font-size: var(--text-md); }
 .sidebar-search input::placeholder { color: var(--text-placeholder); }
+.sidebar-search.workspace-name { margin: 2px 19px 4px 24px; }
 
 .side-row { position: relative; display: flex; align-items: center; height: var(--row-h); flex: none; margin: 0 8px 1px; border-radius: var(--radius-row); color: var(--text-2); font-size: var(--text-md); }
 .side-row:hover { background: var(--bg-row-hover); }
diff --git a/apps/desktop/src/shared/types.ts b/apps/desktop/src/shared/types.ts
index f48f8c11..9bbd745d 100644
--- a/apps/desktop/src/shared/types.ts
+++ b/apps/desktop/src/shared/types.ts
@@ -559,6 +559,8 @@ export interface BridgeCommands extends NativeDraftCommands, ImageCommands, Plug
   "project:notes": { req: { projectId: string }; res: import("./notes.js").NotesProject };
   /** Moves a Modex project's notes into another workspace. */
   "project:workspace": { req: { projectId: string; workspaceId: string }; res: { id: string; name: string; order: number; isDefault: boolean; modexProjectIds: string[] }[] };
+  /** Makes a notes workspace and moves the project's notes into it, as one action. */
+  "project:new-workspace": { req: { projectId: string; name: string }; res: { id: string; name: string; order: number; isDefault: boolean; modexProjectIds: string[] }[] };
   "notes:open": { req: { id: string }; res: void };
   /** Copies files into a project or folder; without paths, a picker opens. */
   "notes:import": { req: { targetId: string; paths?: string[] }; res: { imported: number; errors: string[] } };
diff --git a/apps/desktop/test/notes-projects.test.ts b/apps/desktop/test/notes-projects.test.ts
index bad803d1..a81395eb 100644
--- a/apps/desktop/test/notes-projects.test.ts
+++ b/apps/desktop/test/notes-projects.test.ts
@@ -66,6 +66,28 @@ test("the workspace summary says which Modex projects each workspace holds", ()
   assert.equal(notes.projectFor("p1")?.rel, "Clients/site", "a project moved between workspaces keeps its link");
 });
 
+test("a project moves into a new workspace in one step, and a failed move leaves no empty workspace", () => {
+  const home = tmpdir("modex-notes-projects-");
+  const store = new Store(home);
+  const repo = gitRepo();
+  const project = store.addProject(repo);
+  const summaries = store.space.moveProjectToNewWorkspace(project, "Clients");
+  assert.deepEqual(summaries.map(w => w.name).sort(), ["Clients", "Personal"]);
+  assert.deepEqual(summaries.find(w => w.name === "Clients")!.modexProjectIds, [project.id]);
+  assert.equal(marker(home, "Clients", path.basename(repo)).modexProjectId, project.id);
+  assert.equal(fs.existsSync(path.join(home, "notes", "Personal", path.basename(repo))), false);
+
+  const other = store.addProject(gitRepo());
+  const move = store.space.moveNodes;
+  store.space.moveNodes = () => { throw new Error("disk full"); };
+  try { assert.throws(() => store.space.moveProjectToNewWorkspace(other, "Archive"), /disk full/); }
+  finally { store.space.moveNodes = move; }
+  assert.deepEqual(store.space.workspaces().map(w => w.name).sort(), ["Clients", "Personal"], "the workspace made for a failed move is gone again");
+  assert.equal(fs.existsSync(path.join(home, "notes", "Archive")), false);
+  assert.throws(() => store.space.moveProjectToNewWorkspace(other, "   "), /Name the workspace/);
+  assert.equal(store.space.workspaces().length, 2);
+});
+
 test("a project folder copied in Finder becomes a project of its own instead of making the notes unreadable", () => {
   const home = tmpdir("modex-notes-copies-");
   const notes = new NotesStore(path.join(home, "notes"));
diff --git a/apps/store-desktop/src/main/demo.ts b/apps/store-desktop/src/main/demo.ts
index f540df4d..be08d9ea 100644
--- a/apps/store-desktop/src/main/demo.ts
+++ b/apps/store-desktop/src/main/demo.ts
@@ -107,6 +107,7 @@ export class StoreDemo {
       "notes:workspaces": () => [],
       "project:notes": () => { throw new Error("Space is unavailable in the review demo."); },
       "project:workspace": () => { throw new Error("Space is unavailable in the review demo."); },
+      "project:new-workspace": () => { throw new Error("Space is unavailable in the review demo."); },
       "notes:open": unavailable,
       "notes:import": unavailable,
       "notes:file:read": unavailable,
diff --git a/docs/notes.md b/docs/notes.md
index 3d94ed1e..5d571b60 100644
--- a/docs/notes.md
+++ b/docs/notes.md
@@ -97,6 +97,10 @@ Each Modex project has a notes project, made in the default workspace when the p
 its code folder. Removing the project from Modex keeps the notes and unlinks them; adding the
 same folder again links them back. Moving a project's notes to another workspace regroups it in
 the chat sidebar.
+A project's menu in the chat sidebar also has **Move to new workspace…**: name it, press Enter,
+and Modex makes the workspace and moves the project's notes into it in one step
+(`project:new-workspace`). It works while there is only the default workspace. Escape or leaving
+the field makes nothing, and if the move fails, the new workspace is removed again.
 
 ## History and revisions
 
diff --git a/docs/status.md b/docs/status.md
index 9b9880e0..2410028d 100644
--- a/docs/status.md
+++ b/docs/status.md
@@ -144,6 +144,9 @@ and [landing verification](reviews/2026-10-11-landing-clarity.md).
   unknown stays in view, and every Codex web search read as unknown: codex-cli 0.163.0 gives a
   search no status or error field. Its completion is its only report, so a completed search now
   reads as done and folds like other finished work (#277).
+- **A project can move to a new workspace from the chat sidebar.** Its menu has **Move to new
+  workspace…**, which names a workspace and moves the project into it in one step, even while there
+  is only the default workspace. Before, a new workspace had to be made in Space first.
 
 ## In flight