feat(run): show externally started Claude sessions in the active-runs list

The Workspace active-runs list only knew about runs this dashboard spawned,
so two `claude` sessions started by hand in terminal tabs showed up nowhere —
the list read "no active runs" while two agents were working.

Poll GET /api/sessions?status=active alongside the run list and merge those
sessions in as live rows, deduped against dashboard runs by session_id and
filtered to local sources with a cwd (a remote-source or cwd-less session
cannot be resumed on this machine).

External rows get no Attach action: the dashboard owns no tmux session for
them, so there is no PTY to bridge. They offer Resume, which reuses the
existing ensure-lane + start-with-resumeSessionId path to spawn a new
tmux-backed `claude --resume` in that folder — a second process on the same
transcript, not a view of the original terminal.

client/src/components/lanes/LaneStripCard.tsx

@@ -1,9 +1,9 @@
 /**
- * @file The compact lane tile used in the Workspace carousel. It carries only
+ * @file The compact lane tile used in the Workspace's vertical lane list. It
- * what you need to pick a lane — which lane, is it alive, what stage, how far —
+ * carries only what you need to pick a lane — which lane, is it alive, what
- * because the full card, its controls and its working-copy facts live in the
+ * stage, how far — because the full card, its controls and its working-copy
- * detail panel below. Keeping the tile small is what lets a dozen lanes stay
+ * facts live in the detail panel beside it. Keeping the tile small and full
- * scannable in one horizontal row.
+ * width is what lets many lanes stay scannable in one scrolling column.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -42,7 +42,7 @@ export default function LaneStripCard({
       aria-pressed={selected}
       onClick={onSelect}
       title={lane.cwd}
-      className={`w-56 shrink-0 snap-start rounded-lg border p-3 text-left shadow-sm transition-colors ${
+      className={`w-full shrink-0 rounded-lg border p-3 text-left shadow-sm transition-colors ${
         selected
           ? "border-accent bg-accent/10"
           : "border-border bg-surface-2 hover:border-border-light hover:bg-surface-3"

client/src/components/run/LaneConsolePane.tsx

@@ -4,8 +4,8 @@
  * moved out of Workspace.tsx so the Workspace page can render 1, 2, or 4 of
  * these side by side (split terminal view). Owns its own prompt/cwd/model/
  * permissionMode/effort/resumeSession/handle/busy/runHistory state — nothing
- * is shared between panes. `lanes`, `binaryStatus`, `cwdSuggestions`, and
+ * is shared between panes. `lanes`, `binaryStatus`, `cwdSuggestions`,
- * `activeRuns` are supplied as props because they are global, not
+ * `activeRuns`, and `externalSessions` are supplied as props because they are global, not
  * lane-specific, and fetching them per pane would mean N redundant identical
  * requests for an N-pane layout.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
@@ -38,6 +38,9 @@ export interface LaneConsolePaneProps {
   binaryStatus: { found: boolean; path: string | null } | null;
   cwdSuggestions: CwdSuggestion[];
   activeRuns: RunListResponse | null;
+  /** Active Claude Code sessions started outside the dashboard, listed in the
+   *  active-runs switcher alongside dashboard runs. */
+  externalSessions?: Session[];
   wsConnected: boolean;
   defaultCwd?: string;
   onHasActiveRunChange?: (active: boolean) => void;
@@ -52,6 +55,7 @@ export function LaneConsolePane({
   binaryStatus,
   cwdSuggestions,
   activeRuns,
+  externalSessions,
   wsConnected,
   defaultCwd,
   onHasActiveRunChange,
@@ -340,6 +344,7 @@ export function LaneConsolePane({
           currentHandleId={handle?.id || null}
           onAttach={attachToRun}
           runHistory={runHistory}
+          externalSessions={externalSessions}
           onResumeFromHistory={onResumeFromHistory}
           onViewFromHistory={onViewFromHistory}
           onRefresh={refreshList}

client/src/components/run/RunHistory.tsx

@@ -12,9 +12,16 @@
  *     status / mode chip filters, a free-text search, and the per-row Attach /
  *     Resume / View actions.
  *
- * Props only: no API call of its own. The page passes `activeRuns` and
+ * `externalSessions` (active Claude Code sessions this dashboard did NOT spawn —
- * `runHistory` in and gets attach / resume / view / refresh back out through
+ * e.g. `claude` started by hand in a terminal tab) are merged in as live rows so
- * callbacks; the 2 s refresh ticker the modal runs just calls `onRefresh`.
+ * "Active runs" counts everything actually running. They carry no tmux session
+ * the dashboard can attach to, so their only action is Resume, which spawns a
+ * fresh tmux-backed `claude --resume <session>` in that cwd.
+ *
+ * Props only: no API call of its own. The page passes `activeRuns`,
+ * `runHistory` and `externalSessions` in and gets attach / resume / view /
+ * refresh back out through callbacks; the 2 s refresh ticker the modal runs
+ * just calls `onRefresh`.
  *
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
@@ -34,6 +41,7 @@ import {
   Eye,
 } from "lucide-react";
 import type { DashboardRunHistoryItem, RunListResponse, RunStatus } from "../../lib/api";
+import type { Session } from "../../lib/types";
 
 // Minimal StatusPill component (from deleted RunConsole)
 function StatusPill({
@@ -74,6 +82,10 @@ export interface UnifiedRunRow {
   startedAt: number;
   endedAt: number | null;
   isLive: boolean;
+  /** Live Claude Code session this dashboard did not spawn — no tmux session to
+   *  attach to, so Resume (a fresh `claude --resume` in its cwd) is the only
+   *  action. */
+  external?: boolean;
 }
 
 export function ActiveRunsSwitcher({
@@ -81,6 +93,7 @@ export function ActiveRunsSwitcher({
   currentHandleId,
   onAttach,
   runHistory,
+  externalSessions = [],
   onResumeFromHistory,
   onViewFromHistory,
   onRefresh,
@@ -89,6 +102,9 @@ export function ActiveRunsSwitcher({
   currentHandleId: string | null;
   onAttach: (id: string) => void;
   runHistory: DashboardRunHistoryItem[];
+  /** Sessions with `status: "active"` from GET /api/sessions. Remote-source and
+   *  cwd-less sessions are ignored — neither can be resumed on this machine. */
+  externalSessions?: Session[];
   onResumeFromHistory: (item: DashboardRunHistoryItem) => void;
   onViewFromHistory: (item: DashboardRunHistoryItem) => void;
   onRefresh: () => void;
@@ -111,14 +127,18 @@ export function ActiveRunsSwitcher({
     };
   }, [open]);
 
-  // Merge live in-memory handles + persistent history into one row list.
+  // Merge live in-memory handles + persistent history + externally started
-  // Live entries dedupe past-history entries with the same id.
+  // sessions into one row list. Live entries dedupe past-history entries with
-  const rows: UnifiedRunRow[] = useMemo(() => {
+  // the same id; a session id already covered by a run row is never repeated as
+  // an external row.
+  const { rows, historyItems } = useMemo(() => {
     const out: UnifiedRunRow[] = [];
     const seen = new Set<string>();
+    const seenSessions = new Set<string>();
     if (activeRuns) {
       for (const r of activeRuns.items) {
         seen.add(r.id);
+        if (r.sessionId) seenSessions.add(r.sessionId);
         out.push({
           id: r.id,
           sessionId: r.sessionId,
@@ -135,6 +155,7 @@ export function ActiveRunsSwitcher({
     for (const h of runHistory) {
       if (seen.has(h.id)) continue;
       seen.add(h.id);
+      if (h.session_id) seenSessions.add(h.session_id);
       const startedTs = new Date(h.started_at).getTime() || 0;
       const endedTs = h.ended_at ? new Date(h.ended_at).getTime() : null;
       out.push({
@@ -149,9 +170,49 @@ export function ActiveRunsSwitcher({
         isLive: h.isLive,
       });
     }
+    // Externally started sessions: shown as live rows, and mirrored as
+    // synthetic history items so the existing resume path (which only reads
+    // session_id / cwd / model) works on them unchanged.
+    const synthetic: DashboardRunHistoryItem[] = [];
+    for (const s of externalSessions) {
+      if (!s.cwd) continue;
+      if (s.source && s.source !== "local") continue;
+      if (seenSessions.has(s.id)) continue;
+      seenSessions.add(s.id);
+      synthetic.push({
+        id: `session:${s.id}`,
+        session_id: s.id,
+        cwd: s.cwd,
+        model: s.model,
+        permission_mode: null,
+        effort: null,
+        resume_session_id: null,
+        prompt_preview: s.name,
+        status: "running",
+        exit_code: null,
+        started_at: s.started_at,
+        ended_at: null,
+        isLive: true,
+      });
+      out.push({
+        id: `session:${s.id}`,
+        sessionId: s.id,
+        cwd: s.cwd,
+        model: s.model,
+        status: "running",
+        promptPreview: s.name || "",
+        startedAt: new Date(s.started_at).getTime() || 0,
+        endedAt: null,
+        isLive: true,
+        external: true,
+      });
+    }
     out.sort((a, b) => b.startedAt - a.startedAt);
-    return out;
+    return {
-  }, [activeRuns, runHistory]);
+      rows: out,
+      historyItems: synthetic.length ? [...runHistory, ...synthetic] : runHistory,
+    };
+  }, [activeRuns, runHistory, externalSessions]);
 
   const liveCount = rows.filter((r) => r.isLive).length;
   const totalCount = rows.length;
@@ -196,7 +257,7 @@ export function ActiveRunsSwitcher({
             setOpen(false);
             onViewFromHistory(item);
           }}
-          runHistory={runHistory}
+          runHistory={historyItems}
           onClose={() => setOpen(false)}
           onRefresh={onRefresh}
         />
@@ -467,8 +528,10 @@ function UnifiedRunRowView({
         hour: "2-digit",
         minute: "2-digit",
       });
-  // Without mode distinction, offer resume for any finished run with a session
+  // Without mode distinction, offer resume for any finished run with a session.
-  const canResume = !!row.sessionId && !row.isLive;
+  // An external session is live but has no attachable tmux session, so Resume
+  // (a new tmux-backed `claude --resume` in its cwd) is what it gets instead.
+  const canResume = !!row.sessionId && (!row.isLive || !!row.external);
   const canView = !!row.sessionId && !row.isLive;
   return (
     <div
@@ -484,13 +547,21 @@ function UnifiedRunRowView({
             {t("runs.liveBadge", "live")}
           </span>
         )}
+        {row.external && (
+          <span
+            className="text-[10px] font-semibold text-amber-300 bg-amber-500/10 border border-amber-500/25 px-1.5 py-0.5 rounded-full"
+            title={t("runs.externalHint")}
+          >
+            {t("runs.externalBadge")}
+          </span>
+        )}
         {isCurrent && (
           <span className="text-[10px] font-semibold text-accent bg-accent/10 border border-accent/25 px-1.5 py-0.5 rounded-full">
             {t("runs.currentBadge", "current")}
           </span>
         )}
         <span className="ml-auto inline-flex items-center gap-1.5">
-          {row.isLive && !isCurrent && (
+          {row.isLive && !row.external && !isCurrent && (
             <button
               onClick={onAttach}
               className="inline-flex items-center gap-1 rounded-md border border-status-success/40 bg-status-success/10 hover:bg-status-success/20 text-status-success px-2 py-0.5 text-[10.5px] font-medium transition-colors"
@@ -502,6 +573,7 @@ function UnifiedRunRowView({
           {canResume && (
             <button
               onClick={onResume}
+              title={row.external ? t("runs.externalHint") : undefined}
               className="inline-flex items-center gap-1 rounded-md border border-accent/40 bg-accent/15 hover:bg-accent/25 text-accent px-2 py-0.5 text-[10.5px] font-medium transition-colors"
             >
               <RotateCcw className="w-3 h-3" />

client/src/components/run/__tests__/RunHistory.test.tsx

@@ -17,6 +17,7 @@ import { beforeEach, describe, expect, it, vi } from "vitest";
 import i18n from "i18next";
 import { ActiveRunsSwitcher, RunsModal, type UnifiedRunRow } from "../RunHistory";
 import type { DashboardRunHistoryItem, RunListResponse } from "../../../lib/api";
+import type { Session } from "../../../lib/types";
 
 const LIVE_ID = "run-live";
 const PAST_ID = "run-past";
@@ -67,6 +68,21 @@ const HEADLESS = historyItem({
   started_at: new Date(1000).toISOString(),
 });
 
+function externalSession(over: Partial<Session> = {}): Session {
+  return {
+    id: "sess-external",
+    name: "the external prompt",
+    status: "active",
+    cwd: "/tmp/external",
+    model: "claude-opus-5",
+    started_at: new Date(3000).toISOString(),
+    ended_at: null,
+    updated_at: new Date(3000).toISOString(),
+    source: "local",
+    ...over,
+  } as unknown as Session;
+}
+
 function renderSwitcher(overrides: Partial<React.ComponentProps<typeof ActiveRunsSwitcher>> = {}) {
   const spies = {
     onAttach: vi.fn(),
@@ -188,6 +204,44 @@ describe("ActiveRunsSwitcher", () => {
     expect(screen.queryByText("stale copy")).toBeNull();
   });
 
+  it("counts and lists a session started outside the dashboard, resumable not attachable", () => {
+    const { spies } = renderSwitcher({
+      activeRuns: null,
+      runHistory: [],
+      externalSessions: [externalSession()],
+    });
+    fireEvent.click(screen.getByText(i18n.t("run:runs.viewActive_other", { count: 1 })));
+    expect(screen.getByText("the external prompt")).toBeTruthy();
+    expect(screen.getByText(i18n.t("run:runs.externalBadge"))).toBeTruthy();
+    // No tmux session of ours to attach to — Resume is the only action.
+    expect(screen.queryByText(i18n.t("run:runs.attachLabel", "Attach"))).toBeNull();
+    fireEvent.click(screen.getByText(i18n.t("run:resume.resumeOption")));
+    expect(spies.onResumeFromHistory).toHaveBeenCalledWith(
+      expect.objectContaining({
+        id: "session:sess-external",
+        session_id: "sess-external",
+        cwd: "/tmp/external",
+        status: "running",
+        isLive: true,
+      })
+    );
+  });
+
+  it("skips external sessions already covered by a run, remote ones, and cwd-less ones", () => {
+    renderSwitcher({
+      runHistory: [],
+      externalSessions: [
+        externalSession({ id: "sess-live" }), // same session as the live run
+        externalSession({ id: "sess-remote", source: "remote-1" }),
+        externalSession({ id: "sess-nocwd", cwd: null }),
+      ],
+    });
+    fireEvent.click(screen.getByText(i18n.t("run:runs.viewActive_other", { count: 1 })));
+    expect(screen.getByText("the live prompt")).toBeTruthy();
+    expect(screen.queryByText("the external prompt")).toBeNull();
+    expect(screen.queryByText(i18n.t("run:runs.externalBadge"))).toBeNull();
+  });
+
   it("fires attach with the run id of the row that was clicked", () => {
     const { spies } = renderSwitcher();
     openModal();

client/src/i18n/locales/en/lanes.json

@@ -90,6 +90,8 @@
   "git.uncommitted": "{{dirty}} modified · {{untracked}} untracked",
   "kind.adopted": "adopted",
   "kind.managed": "managed",
+  "laneDetail.hide": "Hide details",
+  "laneDetail.show": "Lane details",
   "laneHeader": "Lane {{id}} · {{title}} · {{pipeline}}",
   "locks.held_one": "{{count}} lock held",
   "locks.held_other": "{{count}} locks held",

client/src/i18n/locales/en/run.json

@@ -116,7 +116,9 @@
   "runs": {
     "allSessionsLink": "See all Claude Code sessions →",
     "attached": "Attached to existing run",
-    "scopeNote": "Only shows runs you started from this dashboard.",
+    "externalBadge": "external",
+    "externalHint": "Started outside the dashboard, so there is no terminal to attach to. Resume opens a new tmux-backed `claude --resume` of this session in its folder.",
+    "scopeNote": "Runs started from this dashboard, plus Claude Code sessions running outside it.",
     "started": "Started {{when}}",
     "switcher": "Active runs",
     "switcherEmpty": "No active runs",

client/src/i18n/locales/vi/lanes.json

@@ -90,6 +90,8 @@
   "git.uncommitted": "{{dirty}} đã sửa · {{untracked}} chưa theo dõi",
   "kind.adopted": "đã nhận",
   "kind.managed": "được quản lý",
+  "laneDetail.hide": "Ẩn chi tiết",
+  "laneDetail.show": "Chi tiết lane",
   "laneHeader": "Làn đường {{id}} · {{title}} · {{pipeline}}",
   "locks.held_one": "Đang giữ {{count}} khóa",
   "locks.held_other": "Đang giữ {{count}} khóa",

client/src/i18n/locales/vi/run.json

@@ -115,7 +115,9 @@
   "runs": {
     "allSessionsLink": "Xem tất cả phiên Claude Code →",
     "attached": "Đã gắn vào run đang chạy",
-    "scopeNote": "Chỉ hiển thị các run bạn khởi chạy từ dashboard này.",
+    "externalBadge": "ngoài dashboard",
+    "externalHint": "Phiên này khởi chạy ngoài dashboard nên không có terminal để attach. Resume sẽ mở một `claude --resume` mới trong tmux tại đúng thư mục đó.",
+    "scopeNote": "Các run khởi chạy từ dashboard này, cùng những phiên Claude Code đang chạy bên ngoài.",
     "started": "Bắt đầu lúc {{when}}",
     "switcher": "Run đang chạy",
     "switcherEmpty": "Không có run đang chạy",

client/src/pages/Workspace.tsx

@@ -5,6 +5,8 @@
  * the selected lane's pipeline map, and run configuration/console/history below.
  * Runs are tied to lanes: starting a run posts to POST /api/lanes/:id/start.
  * When a cwd isn't owned by any lane, calls POST /api/lanes/ensure first.
+ * Polls GET /api/sessions?status=active alongside the run list so Claude Code
+ * sessions started outside the dashboard also appear in the active-runs list.
  *
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
@@ -42,7 +44,7 @@ import { useTranslation } from "react-i18next";
 import { Plus } from "lucide-react";
 import { api } from "../lib/api";
 import type { CwdSuggestion, RunListResponse } from "../lib/api";
-import type { Lane, LaneFeature, LaneCounts, ProofFeature, WSMessage } from "../lib/types";
+import type { Lane, LaneFeature, LaneCounts, ProofFeature, Session, WSMessage } from "../lib/types";
 import { eventBus } from "../lib/eventBus";
 import { LaneConsolePane } from "../components/run/LaneConsolePane";
 import PipelineMap from "../components/lanes/PipelineMap";
@@ -54,39 +56,16 @@ import type { SplitViewState, SplitLayout } from "../lib/splitViewStorage";
 
 // ── Page ──────────────────────────────────────────────────────────────
 
-function ConsoleArea({
+function SplitLayoutToggle({
-  lanes,
-  selectedLaneId,
   splitView,
   setLayout,
-  setPaneLaneId,
-  binaryStatus,
-  cwdSuggestions,
-  activeRuns,
-  wsConnected,
-  defaultCwd,
-  onHasActiveRunChange,
-  onLaneCreated,
-  onLaneIdChange,
 }: {
-  lanes: Lane[];
-  selectedLaneId: number | null;
   splitView: SplitViewState;
   setLayout: (layout: SplitLayout) => void;
-  setPaneLaneId: (index: number, id: number) => void;
-  binaryStatus: { found: boolean; path: string | null } | null;
-  cwdSuggestions: CwdSuggestion[];
-  activeRuns: RunListResponse | null;
-  wsConnected: boolean;
-  defaultCwd: string;
-  onHasActiveRunChange: (val: boolean) => void;
-  onLaneCreated: (lane: Lane) => void;
-  onLaneIdChange: (id: number | null) => void;
 }) {
   const { t: tLanes } = useTranslation("lanes");
 
   return (
-    <>
     <div className="flex items-center gap-1.5">
       {([1, 2, 4] as const).map((n) => (
         <button
@@ -104,6 +83,45 @@ function ConsoleArea({
         </button>
       ))}
     </div>
+  );
+}
+
+function ConsoleArea({
+  lanes,
+  selectedLaneId,
+  splitView,
+  setLayout,
+  setPaneLaneId,
+  binaryStatus,
+  cwdSuggestions,
+  activeRuns,
+  externalSessions,
+  wsConnected,
+  defaultCwd,
+  onHasActiveRunChange,
+  onLaneCreated,
+  onLaneIdChange,
+  showToggle = true,
+}: {
+  lanes: Lane[];
+  selectedLaneId: number | null;
+  splitView: SplitViewState;
+  setLayout: (layout: SplitLayout) => void;
+  setPaneLaneId: (index: number, id: number) => void;
+  binaryStatus: { found: boolean; path: string | null } | null;
+  cwdSuggestions: CwdSuggestion[];
+  activeRuns: RunListResponse | null;
+  externalSessions: Session[];
+  wsConnected: boolean;
+  defaultCwd: string;
+  onHasActiveRunChange: (val: boolean) => void;
+  onLaneCreated: (lane: Lane) => void;
+  onLaneIdChange: (id: number | null) => void;
+  showToggle?: boolean;
+}) {
+  return (
+    <>
+      {showToggle && <SplitLayoutToggle splitView={splitView} setLayout={setLayout} />}
       {splitView.layout === 1 ? (
         <LaneConsolePane
           lanes={lanes}
@@ -114,6 +132,7 @@ function ConsoleArea({
           binaryStatus={binaryStatus}
           cwdSuggestions={cwdSuggestions}
           activeRuns={activeRuns}
+          externalSessions={externalSessions}
           wsConnected={wsConnected}
           defaultCwd={defaultCwd}
           onHasActiveRunChange={onHasActiveRunChange}
@@ -135,6 +154,7 @@ function ConsoleArea({
               binaryStatus={binaryStatus}
               cwdSuggestions={cwdSuggestions}
               activeRuns={activeRuns}
+              externalSessions={externalSessions}
               wsConnected={wsConnected}
               defaultCwd={defaultCwd}
             />
@@ -166,6 +186,10 @@ export function Workspace() {
   // Run state kept at page level: shared across every pane, or drives the
   // lane strip itself rather than any one pane's form.
   const [activeRuns, setActiveRuns] = useState<RunListResponse | null>(null);
+  // Claude Code sessions running outside the dashboard (a `claude` the user
+  // started in a terminal tab). They are not dashboard runs, so the run list
+  // would otherwise show nothing while two agents are working.
+  const [externalSessions, setExternalSessions] = useState<Session[]>([]);
   const [binaryStatus, setBinaryStatus] = useState<{ found: boolean; path: string | null } | null>(
     null
   );
@@ -175,6 +199,11 @@ export function Workspace() {
 
   // Split view state
   const [splitView, setSplitView] = useState<SplitViewState>(() => readSplitViewState());
+  // Info block (pickers, LaneCard, PipelineMap, proof gallery) is always shown
+  // in single-pane view; in split view it starts collapsed so tall content
+  // never crowds the pane grid, and the user expands it on demand.
+  const [infoExpanded, setInfoExpanded] = useState(false);
+  const showInfo = splitView.layout === 1 || infoExpanded;
 
   const setLayout = useCallback((layout: SplitLayout) => {
     setSplitView((prev) => {
@@ -217,10 +246,6 @@ export function Workspace() {
       // `claude` is missing from PATH — leave the probe unresolved rather than
       // showing a misleading "claude missing" banner for an unrelated fault.
       .catch(() => undefined);
-    api.run
-      .list()
-      .then(setActiveRuns)
-      .catch(() => undefined);
     api.lanes
       .pipelines()
       .then((r) => setPipelineTemplates(r.pipelines))
@@ -301,6 +326,10 @@ export function Workspace() {
       .list()
       .then(setActiveRuns)
       .catch(() => undefined);
+    api.sessions
+      .list({ status: "active", limit: 50, sort_by: "updated_at", sort_desc: true })
+      .then((r) => setExternalSessions(r.sessions))
+      .catch(() => undefined);
   }, []);
 
   // Background poll so the run list and history reflect external changes
@@ -308,6 +337,7 @@ export function Workspace() {
   // no WS event fires. Lighter than typical WS gaps; aggressive enough that
   // status flips appear within seconds without needing a manual refresh.
   useEffect(() => {
+    refreshList();
     const tick = setInterval(() => {
       refreshList();
     }, 5000);
@@ -420,7 +450,10 @@ export function Workspace() {
     try {
       const { lane } = await api.lanes.update(id, { pipeline });
       await refreshLanes();
-      if (!lane.pipeline_nodes.some((n) => n.state === "current")) {
+      // `stage` defaults to the DB sentinel "idle" until a driving session ever
+      // calls `ccam stage` — that's the normal state for most lanes and never
+      // matches a real pipeline node, so it isn't a mismatch worth surfacing.
+      if (lane.stage !== "idle" && !lane.pipeline_nodes.some((n) => n.state === "current")) {
         setLaneActionError(
           tLanes("pipelinePicker.stageMismatch", {
             stage: lane.stage,
@@ -488,11 +521,14 @@ export function Workspace() {
         </button>
       </div>
 
-      {/* Lane carousel: pick a lane here, read it below. Horizontal scroll with
+      {/* Lane list + detail live side by side so neither can cover the other:
-          snap so a dozen lanes stay in one row instead of a wall of cards. */}
+          the list is a scrolling column (holds any number of lanes), the
+          detail/console area to its right never has to compete with it for
+          vertical space. */}
+      <div className="flex min-h-0 flex-1 gap-4">
         <div
           data-testid="lane-strip"
-        className="flex snap-x snap-mandatory gap-2 overflow-x-auto pb-1"
+          className="flex w-60 shrink-0 flex-col gap-2 overflow-y-auto pr-1"
         >
           {lanes.map((l) => (
             <LaneStripCard
@@ -509,17 +545,42 @@ export function Workspace() {
           )}
         </div>
 
-      {/* The selected lane's pipeline, full width — the thing you actually
+        {/* The selected lane's pipeline — the thing you actually come to this
-          come to this page to read. */}
+            page to read, beside the list rather than stacked under it. */}
         {currentLane && (
-        <section data-testid="lane-detail" className="card p-4">
+          <section
+            data-testid="lane-detail"
+            className="flex min-h-0 min-w-0 flex-1 flex-col card p-4"
+          >
+            <div className="mb-3 flex flex-wrap items-center justify-between gap-2">
+              <span className="truncate text-sm font-semibold text-fg-primary">
+                {tLanes("laneHeader", {
+                  id: currentLane.id,
+                  title: currentLane.title || currentLane.cwd,
+                  pipeline: currentLane.pipeline_name,
+                })}
+              </span>
+              <div className="flex items-center gap-2">
+                {splitView.layout !== 1 && (
+                  <button
+                    type="button"
+                    data-testid="lane-detail-toggle"
+                    aria-expanded={infoExpanded}
+                    onClick={() => setInfoExpanded((v) => !v)}
+                    className="rounded border border-border-light px-2 py-1 text-xs text-fg-secondary transition-colors hover:text-fg-primary"
+                  >
+                    {infoExpanded ? tLanes("laneDetail.hide") : tLanes("laneDetail.show")}
+                  </button>
+                )}
+                <SplitLayoutToggle splitView={splitView} setLayout={setLayout} />
+              </div>
+            </div>
+            {showInfo && (
+              <div className="max-h-[45vh] shrink-0 overflow-y-auto">
                 <div className="mb-3 flex flex-wrap items-baseline gap-2">
                   <span className="text-[11px] font-semibold uppercase tracking-widest text-fg-muted">
                     {tLanes("cardId", { id: currentLane.id })}
                   </span>
-            <span className="truncate text-sm font-semibold text-fg-primary">
-              {currentLane.title || currentLane.cwd}
-            </span>
                   <select
                     data-testid="pipeline-picker"
                     aria-label={tLanes("pipelinePicker.label")}
@@ -592,7 +653,9 @@ export function Workspace() {
                 </div>
                 <div className="mb-3">
                   <PipelineMap
-              nodes={viewedFeature ? viewedFeature.pipeline_nodes : currentLane.pipeline_nodes}
+                    nodes={
+                      viewedFeature ? viewedFeature.pipeline_nodes : currentLane.pipeline_nodes
+                    }
                     detectedSignal={viewedFeature ? undefined : currentLane.detected_signal}
                   />
                   {viewedFeature && (
@@ -642,7 +705,9 @@ export function Workspace() {
                       ))}
                     </div>
                   )}
-          <div className="flex min-h-0 flex-col gap-2 border-t border-border pt-3">
+              </div>
+            )}
+            <div className="flex min-h-0 flex-1 flex-col gap-2 border-t border-border pt-3">
               <ConsoleArea
                 lanes={lanes}
                 selectedLaneId={selectedLaneId}
@@ -652,6 +717,7 @@ export function Workspace() {
                 binaryStatus={binaryStatus}
                 cwdSuggestions={cwdSuggestions}
                 activeRuns={activeRuns}
+                externalSessions={externalSessions}
                 wsConnected={wsConnected}
                 defaultCwd={defaultCwd}
                 onHasActiveRunChange={setPaneHasActiveRun}
@@ -659,13 +725,14 @@ export function Workspace() {
                   setLanes((prev) => (prev.some((l) => l.id === lane.id) ? prev : [...prev, lane]))
                 }
                 onLaneIdChange={setSelectedLaneId}
+                showToggle={false}
               />
             </div>
           </section>
         )}
 
         {!currentLane && (
-        <div className="flex min-h-0 flex-col gap-2">
+          <div className="flex min-h-0 flex-1 flex-col gap-2">
             <ConsoleArea
               lanes={lanes}
               selectedLaneId={selectedLaneId}
@@ -675,6 +742,7 @@ export function Workspace() {
               binaryStatus={binaryStatus}
               cwdSuggestions={cwdSuggestions}
               activeRuns={activeRuns}
+              externalSessions={externalSessions}
               wsConnected={wsConnected}
               defaultCwd={defaultCwd}
               onHasActiveRunChange={setPaneHasActiveRun}
@@ -685,6 +753,7 @@ export function Workspace() {
             />
           </div>
         )}
+      </div>
 
       <AddLaneModal
         open={addLaneOpen}

client/src/pages/__tests__/__snapshots__/screens.snapshot.test.tsx.snap

@@ -5762,7 +5762,10 @@ exports[`screen snapshots > Run 1`] = `
       </button>
     </div>
     <div
-      class="flex snap-x snap-mandatory gap-2 overflow-x-auto pb-1"
+      class="flex min-h-0 flex-1 gap-4"
+    >
+      <div
+        class="flex w-60 shrink-0 flex-col gap-2 overflow-y-auto pr-1"
         data-testid="lane-strip"
       >
         <p
@@ -5776,7 +5779,7 @@ exports[`screen snapshots > Run 1`] = `
         </p>
       </div>
       <div
-      class="flex min-h-0 flex-col gap-2"
+        class="flex min-h-0 flex-1 flex-col gap-2"
       >
         <div
           class="flex items-center gap-1.5"
@@ -6136,6 +6139,7 @@ exports[`screen snapshots > Run 1`] = `
         </div>
       </div>
     </div>
+  </div>
 </div>
 `;
 

docs/LANES.md

@@ -315,6 +315,18 @@ The dashboard web UI merges lanes and runs into a single **Workspace** page acce
 
 Run history is per lane, queryable via `GET /api/run/history?laneId=<n>`.
 
+### Active runs list
+
+The **Active runs** button in the console header opens the merged run list. It shows three sources in one place, newest first:
+
+1. live in-memory tmux runs from `GET /api/run`,
+2. persisted dashboard runs from `GET /api/run/history`,
+3. Claude Code sessions running **outside** the dashboard — `GET /api/sessions?status=active`, i.e. a `claude` the user started by hand in a terminal tab. These carry an amber `external` badge, and the button's live count includes them, so two hand-started agents read as "2 active runs".
+
+An external session is deduped against a dashboard run with the same `session_id`, and sessions from a remote data source (`source !== "local"`) or without a `cwd` are skipped — neither can be resumed on this machine.
+
+External rows have **no Attach action**: the dashboard owns no tmux session for them, so there is no PTY to bridge. Their action is **Resume**, which does what resuming from history does — `POST /api/lanes/ensure` for the session's `cwd`, then `POST /api/lanes/:id/start` with `resumeSessionId` — spawning a *new* tmux-backed `claude --resume <session>` in that folder. The original terminal keeps running; resuming gives you a second Claude Code process on the same transcript, not a view of the first one.
+
 The UI operates on a working directory (`cwd`), not a lane id. Starting a run in a `cwd` that no lane owns calls `POST /api/lanes/ensure` first, to idempotently find or adopt a lane for that path; a `cwd` an existing lane already owns is matched from the loaded lane list without a round trip. Either way the run is then started through `POST /api/lanes/:id/start` rather than directly through `POST /api/run`.
 
 ### Finding or adopting a lane: `POST /api/lanes/ensure`

server/__tests__/lane-lifecycle.test.js

@@ -80,6 +80,29 @@ function makeRunChild({ exitsOnKill }) {
   return child;
 }
 
+// Puts a fake `claude` binary on PATH so a real `/start` spawns a real tmux
+// session running THIS script instead of the system Claude Code CLI. Tests
+// that mock tmux's own exec calls (to simulate a stuck/live session) still
+// spawn this real process underneath — without the stub, that spawn launches
+// the actual `claude` binary and, because the mock replaces the app's own
+// kill-session call, the real process is never actually terminated, leaking
+// a live tmux session + CLI process for good. Returns the restore function.
+function stubClaudeBinary(name) {
+  const bin = path.join(ROOT, `${name}-bin`);
+  const claude = path.join(bin, "claude");
+  fs.mkdirSync(bin, { recursive: true });
+  fs.writeFileSync(
+    claude,
+    "#!/usr/bin/env node\nprocess.on('SIGTERM', () => process.exit(0));\nsetInterval(() => {}, 1000);\n"
+  );
+  fs.chmodSync(claude, 0o755);
+  const originalPath = process.env.PATH;
+  process.env.PATH = `${bin}${path.delimiter}${originalPath}`;
+  return () => {
+    process.env.PATH = originalPath;
+  };
+}
+
 async function waitForProvisioning(id) {
   const deadline = Date.now() + 5000;
   let response;
@@ -818,6 +841,7 @@ describe("destructive lane lifecycle actions", () => {
     fs.writeFileSync(sentinel, "still here\n");
 
     // Start a run for the lane
+    const restorePath = stubClaudeBinary("await-timeout");
     const started = await request("POST", `/api/lanes/${lane.id}/start`, { prompt: "stuck" });
     assert.equal(started.status, 200);
     const runId = started.body.lane.run_id;
@@ -848,6 +872,15 @@ describe("destructive lane lifecycle actions", () => {
       assert.equal(fs.readFileSync(sentinel, "utf8"), "still here\n");
     } finally {
       tmux.__reset();
+      // The mocked kill-session above only fools the app's own check — the
+      // real tmux session + claude stub spawned above is still alive and
+      // must be killed for real, or it leaks past this test run.
+      try {
+        execFileSync("tmux", ["kill-session", "-t", runId], { stdio: "ignore" });
+      } catch {
+        // already gone
+      }
+      restorePath();
     }
     await request("DELETE", `/api/lanes/${lane.id}`);
   });
@@ -889,6 +922,7 @@ describe("destructive lane lifecycle actions", () => {
     const lane = await createManagedLane("start-twice");
 
     // Start a run for the lane
+    const restorePath = stubClaudeBinary("start-twice");
     const started = await request("POST", `/api/lanes/${lane.id}/start`, { prompt: "first" });
     assert.equal(started.status, 200);
     const runId = started.body.lane.run_id;
@@ -915,6 +949,15 @@ describe("destructive lane lifecycle actions", () => {
       assert.equal(after.body.lane.run_id, runId);
     } finally {
       tmux.__reset();
+      // The real tmux session behind the "first" run is never reset/killed
+      // in this test, mocked or otherwise — kill it for real so it doesn't
+      // leak past this test run.
+      try {
+        execFileSync("tmux", ["kill-session", "-t", runId], { stdio: "ignore" });
+      } catch {
+        // already gone
+      }
+      restorePath();
     }
 
     await request("DELETE", `/api/lanes/${lane.id}`);
@@ -1134,6 +1177,7 @@ describe("lane ensure, start mode, lane_id and releasing a finished run", () =>
     const lane = await adoptedLane("release-moved-on");
 
     // Create a run for this lane.
+    const restorePath = stubClaudeBinary("release-moved-on");
     const started = await request("POST", `/api/lanes/${lane.id}/start`, { prompt: "test" });
     assert.equal(started.status, 200, JSON.stringify(started.body));
     const runId = started.body.lane.run_id;
@@ -1161,6 +1205,14 @@ describe("lane ensure, start mode, lane_id and releasing a finished run", () =>
       assert.equal(after.status, "running");
     } finally {
       tmux.__reset();
+      // The app never calls kill-session here (healing preserves the "live"
+      // run) — kill the real tmux session directly so it doesn't leak.
+      try {
+        execFileSync("tmux", ["kill-session", "-t", runId], { stdio: "ignore" });
+      } catch {
+        // already gone
+      }
+      restorePath();
     }
   });
 
@@ -1169,6 +1221,7 @@ describe("lane ensure, start mode, lane_id and releasing a finished run", () =>
     const lane = await adoptedLane("release-stale-run");
 
     // Start a run for this lane.
+    const restorePath = stubClaudeBinary("release-stale-run");
     const started = await request("POST", `/api/lanes/${lane.id}/start`, { prompt: "test" });
     assert.equal(started.status, 200, JSON.stringify(started.body));
     const runId = started.body.lane.run_id;
@@ -1195,6 +1248,14 @@ describe("lane ensure, start mode, lane_id and releasing a finished run", () =>
       assert.equal(after.status, "idle", "status should be idle after run is gone");
     } finally {
       tmux.__reset();
+      // The app believes the session is already gone and never calls
+      // kill-session — kill the real tmux session directly so it doesn't leak.
+      try {
+        execFileSync("tmux", ["kill-session", "-t", runId], { stdio: "ignore" });
+      } catch {
+        // already gone
+      }
+      restorePath();
     }
   });
 });