feat(workspace): split menus start AI tools; drop the Tools menu

A pane's split right/down menus offered only New terminal. They now list
the same AI tools as the tab bar's + menu (newTabTools/newTabBody,
shared from ConsoleTabs), started bare in the first free slot on that
side of the pane.

The tab bar's Tools menu is gone: its readme run hit 409 ERUNLIVE
whenever slot 0 was live (always, in the session view) and depended on
a personal skill; MCP sync and the dev-sync check served the dormant
ship-feature-lane pipeline. The sidebar row menu's readme item goes too.
The routes stay, reached by `agenthub lanes mcp sync` and
`agenthub lanes sync-base`.

Also: the home's Memory header and file tabs no longer shrink (a long
file squeezed the tab row and clipped it).

client/src/components/lanes/LaneCard.tsx

@@ -9,12 +9,7 @@
  * lane-detail section, whose header above it already shows them. Neither is
  * progress: the pipeline map directly below this card draws the same number
  * as named, coloured nodes, so a bar and a percent beside it were a worse
- * second telling of it. The repo
- * tooling dropdown (`LaneToolsMenu`, exported from this file — agents
- * install / MCP sync / dev-sync check / create-update readme) and the
- * remove-lane button live in Workspace's page header / pipeline-picker row
- * instead of here, so they stay reachable and un-clipped regardless of this
- * card's own scroll area. The working copy — branch, uncommitted counts, the
+ * second telling of it. The working copy — branch, uncommitted counts, the
  * git action bar — is not here either: it heads the Changes panel
  * (`LaneGitHeader`), beside the diff it describes.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
@@ -116,144 +111,6 @@ export function since(sec: number | null): string {
   return `${Math.floor(sec / 3600)}h ${Math.floor((sec % 3600) / 60)}m`;
 }
 
-/**
- * Repo tooling (MCP sync / dev-sync check, and the
- * create/update-readme run, which moved here from the Add-lane modal) for one lane,
- * collapsed into a single dropdown. Lives outside LaneCard so it can be
- * placed in the Workspace page header, next to "Add lane" — it polls its
- * own runtime state independently of LaneCard's, same pattern as the
- * separately-polled git/locks facts elsewhere on this page.
- */
-export function LaneToolsMenu({ lane }: { lane: Lane }) {
-  const { t } = useTranslation(["lanes"]);
-  const [toolsMenuOpen, setToolsMenuOpen] = useState(false);
-  const [laneActionBusy, setLaneActionBusy] = useState<"mcp" | "sync-check" | "docs" | null>(null);
-  const [laneActionResult, setLaneActionResult] = useState<string | null>(null);
-  const runtime = useLaneRuntime(lane.id, 0);
-
-  const runLaneAction = async (which: "mcp" | "sync-check" | "docs", fn: () => Promise<string>) => {
-    setLaneActionBusy(which);
-    setLaneActionResult(null);
-    try {
-      setLaneActionResult(await fn());
-    } catch (err) {
-      setLaneActionResult(err instanceof Error ? err.message : String(err));
-    } finally {
-      setLaneActionBusy(null);
-    }
-  };
-
-  // A skill only exists inside a CLI session, so there is nothing server-side
-  // to call: this opens the lane's own terminal run with the slash command as
-  // its first message. Claude-only — codex has no slash commands.
-  const handleWriteDocs = () =>
-    runLaneAction("docs", async () => {
-      await api.run.start({
-        laneId: lane.id,
-        cwd: lane.cwd,
-        initialPrompt: "/sg-all:sg-md-writing",
-      });
-      return t("actions.writeDocsResult");
-    });
-
-  const handleMcpSync = () =>
-    runLaneAction("mcp", async () => {
-      const result = await api.lanes.mcpSync(lane.id);
-      return t("actions.mcpSyncResult", { servers: result.servers.join(", ") || "none" });
-    });
-
-  const handleSyncCheck = () =>
-    runLaneAction("sync-check", async () => {
-      const result = await api.lanes.syncBaseCheck(lane.id);
-      if (result.code === 5 && result.collisions && result.collisions.length > 0) {
-        const c = result.collisions[0]!;
-        return t("actions.syncCheckCollision", { file: c.file, suggestion: c.suggestion });
-      }
-      return t("actions.syncCheckClean", {
-        count: result.devDelta?.length ?? 0,
-        overlap: result.overlap?.length ? result.overlap.join(", ") : "none",
-      });
-    });
-
-  if (!runtime?.available) return null;
-
-  return (
-    <div className="relative">
-      <button
-        type="button"
-        data-testid="lane-tools-menu"
-        aria-haspopup="menu"
-        aria-expanded={toolsMenuOpen}
-        disabled={laneActionBusy !== null}
-        onClick={(e) => {
-          e.stopPropagation();
-          setToolsMenuOpen((v) => !v);
-        }}
-        className="rounded border border-border-light px-2 py-1 text-xs text-fg-secondary transition-colors hover:text-fg-primary disabled:opacity-50"
-      >
-        {laneActionBusy ? t("actions.busy") : t("actions.tools")}
-      </button>
-      {toolsMenuOpen && (
-        <div
-          role="menu"
-          className="absolute right-0 z-10 mt-1 min-w-44 overflow-hidden rounded-md border border-border-light bg-surface-0 py-1 shadow-lg shadow-black/40"
-        >
-          {lane.tool === "claude" && (
-            <button
-              type="button"
-              role="menuitem"
-              data-testid="lane-write-docs"
-              title={t("actions.writeDocsHint")}
-              onClick={(e) => {
-                e.stopPropagation();
-                setToolsMenuOpen(false);
-                void handleWriteDocs();
-              }}
-              className="block w-full px-3 py-1.5 text-left text-fg-secondary hover:bg-surface-2"
-            >
-              {t("actions.writeDocs")}
-            </button>
-          )}
-          <button
-            type="button"
-            role="menuitem"
-            data-testid="lane-mcp-sync"
-            onClick={(e) => {
-              e.stopPropagation();
-              setToolsMenuOpen(false);
-              void handleMcpSync();
-            }}
-            className="block w-full px-3 py-1.5 text-left text-fg-secondary hover:bg-surface-2"
-          >
-            {t("actions.mcpSync")}
-          </button>
-          <button
-            type="button"
-            role="menuitem"
-            data-testid="lane-sync-check"
-            onClick={(e) => {
-              e.stopPropagation();
-              setToolsMenuOpen(false);
-              void handleSyncCheck();
-            }}
-            className="block w-full px-3 py-1.5 text-left text-fg-secondary hover:bg-surface-2"
-          >
-            {t("actions.syncCheck")}
-          </button>
-        </div>
-      )}
-      {laneActionResult && (
-        <p
-          data-testid="lane-action-result"
-          className="absolute right-0 top-full mt-1 w-max max-w-xs truncate rounded border border-border-light bg-surface-0 px-2 py-1 text-[11px] text-fg-secondary shadow-lg shadow-black/40"
-        >
-          {laneActionResult}
-        </p>
-      )}
-    </div>
-  );
-}
-
 export default function LaneCard({
   lane,
   onAction,

client/src/components/lanes/WorkspaceHome.tsx

@@ -894,7 +894,7 @@ function HomeBody({
             onKeyDown={(e) => e.key === "Escape" && setMemoryOpen(false)}
             className="flex max-h-[85vh] w-full max-w-3xl flex-col rounded-xl border border-border bg-surface-1 p-5 shadow-xl"
           >
-            <div className="mb-3 flex items-center justify-between">
+            <div className="mb-3 flex shrink-0 items-center justify-between">
               <h2 className="text-sm font-semibold text-fg-primary">{t("home.memory")}</h2>
               <button
                 type="button"
@@ -909,7 +909,10 @@ function HomeBody({
             <div
               role="tablist"
               aria-label={t("home.memory")}
-              className="mb-3 flex gap-1.5 overflow-x-auto border-b border-border/60 pb-2 no-scrollbar"
+              // shrink-0: a horizontal scroller's min-height is 0, so in this
+              // height-capped column a long file squeezed the row and clipped
+              // the tabs. The panel below is the one part that scrolls.
+              className="mb-3 flex shrink-0 gap-1.5 overflow-x-auto border-b border-border/60 pb-2 no-scrollbar"
             >
               {memory.map((f, i) => (
                 <button

client/src/components/lanes/WorkspaceRowMenu.tsx

@@ -2,8 +2,7 @@
  * @file WorkspaceRowMenu — the sidebar workspace row's context menu, opened at
  * the pointer (right-click) or under the row's `⋯` button. Every item is an
  * existing call: Start/Stop (`POST /api/lanes/:id/start` slot 0 / `stop`),
- * Rename (the row's inline field), Create/update readme (claude only, the same run
- * the lane Tools menu starts), New workspace here (the Add modal prefilled),
+ * Rename (the row's inline field), New workspace here (the Add modal prefilled),
  * Copy path, and Reset/Remove through `DestructiveLaneModal` — Reset only on a
  * managed lane. The server's guards are the real ones; the menu only hides
  * what the lane's kind or tool makes meaningless. The shell (position,
@@ -59,23 +58,6 @@ export function WorkspaceRowMenu({
         {live ? t("menu.stop") : t("menu.start")}
       </MenuItem>
       <MenuItem onSelect={() => onAction("rename")}>{t("menu.rename")}</MenuItem>
-      {lane.tool === "claude" && (
-        <MenuItem
-          onSelect={() =>
-            void run(
-              () =>
-                api.run.start({
-                  laneId: lane.id,
-                  cwd: lane.cwd,
-                  initialPrompt: "/sg-all:sg-md-writing",
-                }),
-              "started"
-            )
-          }
-        >
-          {t("actions.writeDocs")}
-        </MenuItem>
-      )}
       <MenuItem onSelect={() => onAction("new-here")}>{t("menu.newHere")}</MenuItem>
       <MenuItem onSelect={() => void run(() => navigator.clipboard.writeText(lane.cwd))}>
         {t("menu.copyPath")}

client/src/components/lanes/__tests__/AddLaneModal.test.tsx

@@ -589,9 +589,8 @@ describe("AddLaneModal — folder browse", () => {
 });
 
 describe("AddLaneModal — create/update readme", () => {
-  it("no longer offers it here — it moved to the lane's Tools menu", async () => {
-    // Creating a lane and writing its docs are separate decisions, and the
-    // second one is worth re-running later; see LaneToolsMenu.
+  it("is not offered here", async () => {
+    // Creating a lane and writing its docs are separate decisions.
     renderModal();
     const user = userEvent.setup();
     await user.click(screen.getByRole("button", { name: "Repo" }));

client/src/components/lanes/__tests__/LaneCard.test.tsx

@@ -9,10 +9,10 @@
  */
 
 import { describe, it, expect, vi, beforeEach } from "vitest";
-import { render, screen, waitFor } from "@testing-library/react";
+import { render, screen } from "@testing-library/react";
 import userEvent from "@testing-library/user-event";
-import LaneCard, { LaneToolsMenu } from "../LaneCard";
-import type { Lane, LaneRuntime } from "../../../lib/types";
+import LaneCard from "../LaneCard";
+import type { Lane } from "../../../lib/types";
 import { api } from "../../../lib/api";
 
 vi.mock("../../../lib/api", () => ({
@@ -24,7 +24,6 @@ vi.mock("../../../lib/api", () => ({
       down: vi.fn(),
       preflight: vi.fn().mockResolvedValue({ blocked: [], warnings: [] }),
       mcpSync: vi.fn(),
-      syncBaseCheck: vi.fn(),
     },
     locks: {
       list: vi.fn(),
@@ -294,82 +293,3 @@ describe("LaneCard — named locks", () => {
     expect(screen.queryByTestId("lane-locks-1")).not.toBeInTheDocument();
   });
 });
-
-describe("LaneToolsMenu", () => {
-  beforeEach(() => {
-    vi.mocked(api.lanes.runtime).mockResolvedValue({
-      available: true as const,
-      provisioned: true as const,
-      up: false,
-      slot: 1,
-      profileDir: "/work/demo/.agenthub/profile",
-      ports: {},
-    } as unknown as LaneRuntime);
-  });
-
-  it("clicking Sync MCP calls the API and shows the result", async () => {
-    vi.mocked(api.lanes.mcpSync).mockResolvedValue({
-      servers: ["playwright"],
-      profilesSeeded: [],
-    });
-    render(<LaneToolsMenu lane={makeLane()} />);
-    await userEvent.click(await screen.findByTestId("lane-tools-menu"));
-    await userEvent.click(await screen.findByTestId("lane-mcp-sync"));
-    await waitFor(() => expect(api.lanes.mcpSync).toHaveBeenCalledWith(1));
-    expect(await screen.findByTestId("lane-action-result")).toHaveTextContent("playwright");
-  });
-
-  it("clicking Check dev sync reports a clean result", async () => {
-    vi.mocked(api.lanes.syncBaseCheck).mockResolvedValue({
-      code: 0,
-      devDelta: ["a.txt", "b.txt"],
-      overlap: [],
-    });
-    render(<LaneToolsMenu lane={makeLane()} />);
-    await userEvent.click(await screen.findByTestId("lane-tools-menu"));
-    await userEvent.click(await screen.findByTestId("lane-sync-check"));
-    await waitFor(() => expect(api.lanes.syncBaseCheck).toHaveBeenCalledWith(1));
-    expect(await screen.findByTestId("lane-action-result")).toHaveTextContent("2");
-  });
-
-  it("clicking Check dev sync reports a migration collision", async () => {
-    vi.mocked(api.lanes.syncBaseCheck).mockResolvedValue({
-      code: 5,
-      collisions: [{ file: "002_a.sql", collidesWith: "002_b.sql", suggestion: "003_a.sql" }],
-    });
-    render(<LaneToolsMenu lane={makeLane()} />);
-    await userEvent.click(await screen.findByTestId("lane-tools-menu"));
-    await userEvent.click(await screen.findByTestId("lane-sync-check"));
-    expect(await screen.findByTestId("lane-action-result")).toHaveTextContent("003_a.sql");
-  });
-
-  it("clicking Create/update readme opens the lane's terminal on the docs skill", async () => {
-    // Moved here from the Add-lane modal: a skill only runs inside a CLI
-    // session, and writing the docs is worth re-running long after creation.
-    vi.mocked(api.run.start).mockResolvedValue({} as never);
-    render(<LaneToolsMenu lane={makeLane({ cwd: "/work/demo" })} />);
-    await userEvent.click(await screen.findByTestId("lane-tools-menu"));
-    await userEvent.click(await screen.findByTestId("lane-write-docs"));
-    await waitFor(() =>
-      expect(api.run.start).toHaveBeenCalledWith({
-        laneId: 1,
-        cwd: "/work/demo",
-        initialPrompt: "/sg-all:sg-md-writing",
-      })
-    );
-  });
-
-  it("hides Create/update readme on a codex lane, which has no slash commands", async () => {
-    render(<LaneToolsMenu lane={makeLane({ tool: "codex" })} />);
-    await userEvent.click(await screen.findByTestId("lane-tools-menu"));
-    expect(await screen.findByTestId("lane-mcp-sync")).toBeInTheDocument();
-    expect(screen.queryByTestId("lane-write-docs")).not.toBeInTheDocument();
-  });
-
-  it("renders nothing when the lane has no profile", async () => {
-    vi.mocked(api.lanes.runtime).mockResolvedValue({ available: false });
-    const { container } = render(<LaneToolsMenu lane={makeLane()} />);
-    await waitFor(() => expect(api.lanes.runtime).toHaveBeenCalled());
-    expect(container).toBeEmptyDOMElement();
-  });
-});