diff --git a/desktop/frontend-next/src/actions.ts b/desktop/frontend-next/src/actions.ts
index 7e07f9f88e..1858df6b3d 100644
--- a/desktop/frontend-next/src/actions.ts
+++ b/desktop/frontend-next/src/actions.ts
@@ -81,6 +81,7 @@ export const ACTIONS: UIAction[] = [
   // refused while a turn runs, so it never stops work.
   { id: "session.close", kind: "kernel-mutation", target: "entity", proof: "interaction" },
   { id: "session.archive", kind: "kernel-mutation", target: "entity", proof: "authority-effect" },
+  { id: "session.copy-info", kind: "shell-native", target: "entity", proof: "interaction" },
   { id: "session.export", kind: "shell-native", target: "entity", proof: "browser" },
   { id: "session.delete", kind: "destructive", target: "entity", proof: "authority-effect" },
 
diff --git a/desktop/frontend-next/src/i18n/en.ts b/desktop/frontend-next/src/i18n/en.ts
index c749fb4675..b12a2bc33f 100644
--- a/desktop/frontend-next/src/i18n/en.ts
+++ b/desktop/frontend-next/src/i18n/en.ts
@@ -1124,6 +1124,11 @@ export const EN: Record<string, string> = {
   "读取": "Read",
   "本地工作区": "Local workspace",
   "暂停执行": "Pause run",
+  "复制会话信息": "Copy session information",
+  "会话 ID": "Session ID",
+  "会话上下文路径": "Session context path",
+  "任务路径": "Task path",
+  "任务日志": "Task log",
   "导出会话": "Export session",
   "取消置顶": "Unpin",
   "置顶会话": "Pin session",
diff --git a/desktop/frontend-next/src/ui/Workspaces.tsx b/desktop/frontend-next/src/ui/Workspaces.tsx
index 062eb55630..0efc14dde8 100644
--- a/desktop/frontend-next/src/ui/Workspaces.tsx
+++ b/desktop/frontend-next/src/ui/Workspaces.tsx
@@ -8,6 +8,8 @@ import { pinToViewport } from "./place";
 import { useRailQuery } from "./railsearch";
 import { StudioIcon } from "./StudioIcon";
 import { Cross } from "./glyphs";
+import { copyText } from "./CopyButton";
+import { sessionInfoText } from "./sessionInfo";
 import { download } from "../port/download";
 import { host } from "../port/host";
 import { useTreeKeys } from "./tree";
@@ -591,6 +593,9 @@ function WorkspacesView({ hub, tree, treeRead, runtimes, active, folded, reload,
                             </div>
                             <div className="session-pop-divider" />
                             <div className="session-pop-group">
+                              <button role="menuitem" data-action="session.copy-info" data-target={session.path} onClick={() => { void copyText(sessionInfoText(session, ws.root)).catch(onError); setSessionMenu(""); }}>
+                                <StudioIcon name="copy" /><span>{t("复制会话信息")}</span>
+                              </button>
                               <button role="menuitem" data-action="session.export" data-target={session.path} disabled={busy === "export:" + session.path} onClick={() => void saveSession(session)}>
                                 <StudioIcon name="download" /><span>{t("导出会话")}</span><small>JSON</small>
                               </button>
diff --git a/desktop/frontend-next/src/ui/session-copy-info.interaction.test.tsx b/desktop/frontend-next/src/ui/session-copy-info.interaction.test.tsx
new file mode 100644
index 0000000000..ae472aa15b
--- /dev/null
+++ b/desktop/frontend-next/src/ui/session-copy-info.interaction.test.tsx
@@ -0,0 +1,53 @@
+// @vitest-environment jsdom
+import { afterEach, expect, it, vi } from "vitest";
+import { cleanup, render, screen } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import "./testkit";
+import { Workspaces } from "./Workspaces";
+import type { TreeWorkspace } from "../port/hub";
+
+afterEach(() => {
+  cleanup();
+  vi.restoreAllMocks();
+});
+
+const SESSION = "/w/.reasonix/sessions/20260901-120000.jsonl";
+
+it("copies the four handoff fields from the session menu", async () => {
+  const user = userEvent.setup();
+  const write = vi.spyOn(navigator.clipboard, "writeText").mockResolvedValue();
+  const tree: TreeWorkspace[] = [
+    { root: "/w/project", name: "project", sessions: [{ path: SESSION, name: "20260901-120000", title: "handoff me" }] },
+  ];
+  render(
+    <Workspaces
+      hub={{} as never}
+      tree={tree}
+      treeRead
+      runtimes={[]}
+      active=""
+      folded={new Set()}
+      onFold={() => {}}
+      reload={async () => {}}
+      onOpen={async () => {}}
+      onFocus={() => {}}
+      onClose={async () => {}}
+      liveIds={() => []}
+      runs={{}}
+      onRename={() => {}}
+      onError={() => {}}
+      adder={{ add: () => {}, close: () => {}, at: null } as never}
+    />,
+  );
+
+  await user.pointer({ keys: "[MouseRight]", target: screen.getByRole("treeitem", { name: /handoff me/ }) });
+  await user.click(screen.getByRole("menuitem", { name: "复制会话信息" }));
+
+  expect(write).toHaveBeenCalledWith([
+    "会话 ID: 20260901-120000",
+    "会话上下文路径: /w/.reasonix/sessions",
+    "任务路径: /w/project",
+    "任务日志: /w/.reasonix/sessions/20260901-120000.jsonl",
+  ].join("\n"));
+  expect(screen.queryByRole("menu")).toBeNull();
+});
diff --git a/desktop/frontend-next/src/ui/sessionInfo.test.ts b/desktop/frontend-next/src/ui/sessionInfo.test.ts
new file mode 100644
index 0000000000..9d8df8651f
--- /dev/null
+++ b/desktop/frontend-next/src/ui/sessionInfo.test.ts
@@ -0,0 +1,23 @@
+import { describe, expect, it } from "vitest";
+import { sessionInfoText } from "./sessionInfo";
+
+describe("session handoff information", () => {
+  it("names the four paths another agent needs, with the context directory kept distinct from the task log", () => {
+    expect(sessionInfoText(
+      { name: "20261002-handoff", path: "/home/me/.reasonix/sessions/20261002-handoff.jsonl" },
+      "/home/me/project",
+    )).toBe([
+      "会话 ID: 20261002-handoff",
+      "会话上下文路径: /home/me/.reasonix/sessions",
+      "任务路径: /home/me/project",
+      "任务日志: /home/me/.reasonix/sessions/20261002-handoff.jsonl",
+    ].join("\n"));
+  });
+
+  it("keeps a Windows context directory intact", () => {
+    expect(sessionInfoText(
+      { name: "20261002-win", path: String.raw`C:\Users\me\.reasonix\sessions\20261002-win.jsonl` },
+      String.raw`C:\work\project`,
+    )).toContain(String.raw`会话上下文路径: C:\Users\me\.reasonix\sessions`);
+  });
+});
diff --git a/desktop/frontend-next/src/ui/sessionInfo.ts b/desktop/frontend-next/src/ui/sessionInfo.ts
new file mode 100644
index 0000000000..c8a48a4a51
--- /dev/null
+++ b/desktop/frontend-next/src/ui/sessionInfo.ts
@@ -0,0 +1,20 @@
+import { t } from "../i18n";
+
+interface SessionInfo {
+  name: string;
+  path: string;
+}
+
+function parentPath(path: string): string {
+  const at = Math.max(path.lastIndexOf("/"), path.lastIndexOf("\\"));
+  return at > 0 ? path.slice(0, at) : path;
+}
+
+export function sessionInfoText(session: SessionInfo, taskPath: string): string {
+  return [
+    `${t("会话 ID")}: ${session.name}`,
+    `${t("会话上下文路径")}: ${parentPath(session.path)}`,
+    `${t("任务路径")}: ${taskPath}`,
+    `${t("任务日志")}: ${session.path}`,
+  ].join("\n");
+}