diff --git a/app/src/components/intelligence/IntelligenceTeamsTab.test.tsx b/app/src/components/intelligence/IntelligenceTeamsTab.test.tsx
new file mode 100644
index 000000000..e92293980
--- /dev/null
+++ b/app/src/components/intelligence/IntelligenceTeamsTab.test.tsx
@@ -0,0 +1,191 @@
+import { fireEvent, render, screen, waitFor } from '@testing-library/react';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+import { type AgentTeam, agentTeamApi, type TeamView } from '../../services/api/agentTeamApi';
+import IntelligenceTeamsTab from './IntelligenceTeamsTab';
+
+vi.mock('../../services/api/agentTeamApi', () => ({
+  agentTeamApi: { list: vi.fn(), get: vi.fn(), listMessages: vi.fn() },
+}));
+vi.mock('../../lib/i18n/I18nContext', () => ({ useT: () => ({ t: (k: string) => k }) }));
+
+const mockList = vi.mocked(agentTeamApi.list);
+const mockGet = vi.mocked(agentTeamApi.get);
+const mockMessages = vi.mocked(agentTeamApi.listMessages);
+
+function team(id: string, summary: string): AgentTeam {
+  return {
+    id,
+    leadAgentId: `lead-${id}`,
+    status: 'active',
+    summary,
+    createdAt: '2026-01-01T00:00:00Z',
+    updatedAt: '2026-01-01T00:00:00Z',
+  };
+}
+
+function view(t: AgentTeam): TeamView {
+  return {
+    team: t,
+    members: [
+      {
+        id: 'm1',
+        teamId: t.id,
+        name: 'planner',
+        memberStatus: 'active',
+        createdAt: '2026-01-01T00:00:00Z',
+        updatedAt: '2026-01-01T00:00:00Z',
+      },
+    ],
+    tasks: [
+      {
+        id: 'task-1',
+        teamId: t.id,
+        title: 'Audit flow',
+        status: 'todo',
+        dependsOn: [],
+        gateStatus: 'pending',
+        evidence: [],
+        orderIndex: 0,
+        createdAt: '2026-01-01T00:00:00Z',
+        updatedAt: '2026-01-01T00:00:00Z',
+      },
+    ],
+  };
+}
+
+beforeEach(() => {
+  vi.clearAllMocks();
+  mockMessages.mockResolvedValue([]);
+});
+
+describe('IntelligenceTeamsTab', () => {
+  it('shows the empty state when there are no teams', async () => {
+    mockList.mockResolvedValue([]);
+    render(<IntelligenceTeamsTab />);
+    expect(await screen.findByText('intelligence.teams.empty')).toBeInTheDocument();
+    expect(screen.getByText('intelligence.teams.emptyHint')).toBeInTheDocument();
+  });
+
+  it('requests active teams only (closed teams are not surfaced)', async () => {
+    mockList.mockResolvedValue([]);
+    render(<IntelligenceTeamsTab />);
+    await screen.findByText('intelligence.teams.empty');
+    expect(mockList).toHaveBeenCalledWith({ status: 'active' });
+  });
+
+  it('surfaces a load error', async () => {
+    mockList.mockRejectedValue(new Error('core down'));
+    render(<IntelligenceTeamsTab />);
+    expect(await screen.findByText(/intelligence.teams.failedToLoad/)).toBeInTheDocument();
+    expect(screen.getByText(/core down/)).toBeInTheDocument();
+  });
+
+  it('recovers from a load error via the retry button', async () => {
+    // First list rejects (error state), the retry succeeds. Counter-based impl
+    // (not mock*Once) keeps this independent of any implementation inherited
+    // from a prior test under the clearMocks-only config. Two teams on retry so
+    // the assertion lands on the stable list view (no auto-select detail race).
+    let calls = 0;
+    mockList.mockImplementation(() => {
+      calls += 1;
+      return calls === 1
+        ? Promise.reject(new Error('core down'))
+        : Promise.resolve([team('team-1', 'Alpha'), team('team-2', 'Beta')]);
+    });
+    render(<IntelligenceTeamsTab />);
+
+    await screen.findByText(/core down/);
+    fireEvent.click(screen.getByText('intelligence.teams.refresh'));
+    expect(await screen.findByText('Alpha')).toBeInTheDocument();
+    expect(screen.getByText('Beta')).toBeInTheDocument();
+  });
+
+  it('ignores a stale detail response after the selection changes', async () => {
+    const a = team('team-1', 'Team A');
+    const b = team('team-2', 'Team B');
+    mockList.mockResolvedValue([a, b]);
+
+    let resolveA: (v: TeamView) => void = () => {};
+    const slowA = new Promise<TeamView>(resolve => {
+      resolveA = resolve;
+    });
+    mockGet.mockImplementation((id: string) =>
+      id === 'team-1' ? slowA : Promise.resolve(view(b))
+    );
+
+    render(<IntelligenceTeamsTab />);
+    await screen.findByText('Team A'); // list view (no auto-select with >1 team)
+
+    fireEvent.click(screen.getByText('Team A')); // select A — detail fetch hangs
+    fireEvent.click(screen.getByText('Team B')); // switch to B before A resolves
+    await screen.findByText('Audit flow'); // B's detail rendered
+
+    resolveA(view(a)); // late A response must NOT overwrite B
+    await waitFor(() => expect(screen.getByText('Team B')).toBeInTheDocument());
+    expect(screen.queryByText('Team A')).not.toBeInTheDocument();
+  });
+
+  it('recovers from a detail-fetch error via the retry button', async () => {
+    // Regression for the stuck-error bug: one team auto-selects, its detail
+    // fetch fails, then the retry succeeds. `refresh` must clear `error` first
+    // or the error branch short-circuits the render and the recovered board is
+    // never shown. Counter-based impl, not mock*Once (clearMocks-only config).
+    mockList.mockResolvedValue([team('team-1', 'Ship onboarding')]);
+    let calls = 0;
+    mockGet.mockImplementation(() => {
+      calls += 1;
+      return calls === 1
+        ? Promise.reject(new Error('detail timeout'))
+        : Promise.resolve(view(team('team-1', 'Ship onboarding')));
+    });
+    render(<IntelligenceTeamsTab />);
+
+    await screen.findByText(/detail timeout/);
+    fireEvent.click(screen.getByText('intelligence.teams.refresh'));
+    expect(await screen.findByText('Audit flow')).toBeInTheDocument();
+    expect(screen.queryByText(/detail timeout/)).not.toBeInTheDocument();
+  });
+
+  it('auto-selects and renders the board when there is exactly one team', async () => {
+    const t = team('team-1', 'Ship onboarding');
+    mockList.mockResolvedValue([t]);
+    mockGet.mockResolvedValue(view(t));
+    render(<IntelligenceTeamsTab />);
+
+    // Await a detail-only element (the task title) so the assertion can't
+    // resolve early on the brief single-team list view, then check the rest.
+    expect(await screen.findByText('Audit flow')).toBeInTheDocument();
+    expect(screen.getByText('Ship onboarding')).toBeInTheDocument();
+    expect(screen.getByText('intelligence.teams.column.todo')).toBeInTheDocument();
+    expect(screen.getByText('intelligence.teams.activity.title')).toBeInTheDocument();
+    expect(mockGet).toHaveBeenCalledWith('team-1');
+  });
+
+  it('lists multiple teams and opens one on click', async () => {
+    const a = team('team-1', 'Ship onboarding');
+    const b = team('team-2', 'Fix billing');
+    mockList.mockResolvedValue([a, b]);
+    mockGet.mockResolvedValue(view(a));
+    render(<IntelligenceTeamsTab />);
+
+    // List view first (no auto-select with >1 team).
+    expect(await screen.findByText('Ship onboarding')).toBeInTheDocument();
+    expect(screen.getByText('Fix billing')).toBeInTheDocument();
+    expect(mockGet).not.toHaveBeenCalled();
+
+    fireEvent.click(screen.getByText('Ship onboarding'));
+    await waitFor(() => expect(mockGet).toHaveBeenCalledWith('team-1'));
+    expect(await screen.findByText('Audit flow')).toBeInTheDocument();
+  });
+
+  it('refreshes the list via the refresh button', async () => {
+    mockList.mockResolvedValue([team('team-1', 'A'), team('team-2', 'B')]);
+    render(<IntelligenceTeamsTab />);
+    await screen.findByText('A');
+    expect(mockList).toHaveBeenCalledTimes(1);
+
+    fireEvent.click(screen.getByText('intelligence.teams.refresh'));
+    await waitFor(() => expect(mockList).toHaveBeenCalledTimes(2));
+  });
+});
diff --git a/app/src/components/intelligence/IntelligenceTeamsTab.tsx b/app/src/components/intelligence/IntelligenceTeamsTab.tsx
new file mode 100644
index 000000000..db1671304
--- /dev/null
+++ b/app/src/components/intelligence/IntelligenceTeamsTab.tsx
@@ -0,0 +1,290 @@
+/**
+ * IntelligenceTeamsTab — the agent-team coordination surface (#3374 PR2).
+ *
+ * Read-only window onto the durable team ledger (PR1, #3546). It lists the
+ * teams an agent has spawned, and — for a selected team — renders treatment "A":
+ * a {@link TeamHeader} identity strip, the {@link TeamTaskBoard} of owned tasks,
+ * and an always-visible {@link TeamActivityRail} of teammate messages. The
+ * board/rail sit in a grid that collapses the rail under the board on narrow
+ * widths.
+ *
+ * Most users will see the EMPTY state first: a team only exists once an agent
+ * spawns coordinated sub-agents, so "no teams yet" is the common first view and
+ * is treated as a first-class surface rather than a blank panel.
+ *
+ * There is no socket event for team mutations yet (PR1 was storage + RPC only),
+ * so freshness comes from a mount fetch + a light poll of the *selected* team
+ * while it is still active + a manual refresh. Polling is scoped to the open
+ * team (not the whole list) to bound cost, and stops when the team is closed.
+ */
+import debug from 'debug';
+import { useCallback, useEffect, useRef, useState } from 'react';
+import { LuArrowLeft, LuRefreshCw, LuUsers } from 'react-icons/lu';
+
+import { useT } from '../../lib/i18n/I18nContext';
+import {
+  type AgentTeam,
+  agentTeamApi,
+  type TeamMessage,
+  type TeamView,
+} from '../../services/api/agentTeamApi';
+import { TeamActivityRail } from './TeamActivityRail';
+import { TeamHeader } from './TeamHeader';
+import { TeamTaskBoard } from './TeamTaskBoard';
+
+const log = debug('intelligence:teams');
+
+/** Poll cadence for the open team while it is still active. */
+const POLL_INTERVAL_MS = 5000;
+/** Cap on messages fetched for the activity rail. */
+const MESSAGE_LIMIT = 200;
+
+export default function IntelligenceTeamsTab() {
+  const { t } = useT();
+
+  const [teams, setTeams] = useState<AgentTeam[]>([]);
+  const [selectedId, setSelectedId] = useState<string | null>(null);
+  const [view, setView] = useState<TeamView | null>(null);
+  const [messages, setMessages] = useState<TeamMessage[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const [refreshing, setRefreshing] = useState(false);
+  const mountedRef = useRef(true);
+  // Mirrors `view` for reads inside the poll interval without making the poll
+  // effect depend on `view` (which would rebuild the interval every tick).
+  const viewRef = useRef<TeamView | null>(null);
+  // Mirrors `selectedId` so an in-flight `fetchDetail` can drop its result if
+  // the selection changed (or cleared) while it was awaiting — a slower
+  // detail fetch for an old team must not overwrite a newer selection.
+  const selectedIdRef = useRef<string | null>(null);
+
+  useEffect(() => {
+    selectedIdRef.current = selectedId;
+  }, [selectedId]);
+
+  const fetchTeams = useCallback(async () => {
+    log('fetchTeams: entry');
+    setError(null);
+    try {
+      // Active teams only — `agent_team_list` returns closed teams too, and a
+      // coordination board surfacing archived teams as primary entries is
+      // noise. Closed-team history is a separate (future) surface.
+      const rows = await agentTeamApi.list({ status: 'active' });
+      if (!mountedRef.current) return;
+      setTeams(rows);
+      log('fetchTeams: done teams=%d', rows.length);
+      // Auto-select when there is exactly one team — the common single-team
+      // case lands straight on the board instead of a one-row list.
+      if (rows.length === 1) setSelectedId(prev => prev ?? rows[0].id);
+    } catch (err) {
+      const msg = err instanceof Error ? err.message : String(err);
+      log('fetchTeams: error %s', msg);
+      if (mountedRef.current) setError(msg);
+    } finally {
+      if (mountedRef.current) setLoading(false);
+    }
+  }, []);
+
+  const fetchDetail = useCallback(async (teamId: string) => {
+    log('fetchDetail: entry team=%s', teamId);
+    const [nextView, nextMessages] = await Promise.all([
+      agentTeamApi.get(teamId),
+      agentTeamApi.listMessages(teamId, MESSAGE_LIMIT),
+    ]);
+    // Drop a stale response: unmounted, or the selection moved on while we
+    // were awaiting (guards the slow-fetch-overwrites-newer-team race).
+    if (!mountedRef.current || selectedIdRef.current !== teamId) return;
+    setView(nextView);
+    viewRef.current = nextView;
+    setMessages(nextMessages);
+    log('fetchDetail: done found=%o messages=%d', nextView != null, nextMessages.length);
+  }, []);
+
+  // Deselect a team: clears the detail synchronously from the event handler
+  // (not an effect) so going "back to list" never flashes a stale board.
+  const deselect = useCallback(() => {
+    setSelectedId(null);
+    setView(null);
+    viewRef.current = null;
+    setMessages([]);
+  }, []);
+
+  // Mount fetch of the team list (mirrors IntelligenceAgentWorkTab's 0ms
+  // setTimeout so the first paint shows the loading state).
+  useEffect(() => {
+    mountedRef.current = true;
+    const handle = window.setTimeout(() => void fetchTeams(), 0);
+    return () => {
+      window.clearTimeout(handle);
+      mountedRef.current = false;
+    };
+  }, [fetchTeams]);
+
+  // Load + poll the selected team's detail while it is active. Keyed on
+  // `selectedId` only — the closed-team check reads `viewRef` so the interval
+  // isn't torn down and rebuilt on every poll response.
+  useEffect(() => {
+    if (!selectedId) return;
+    void fetchDetail(selectedId).catch(err => {
+      if (mountedRef.current) setError(err instanceof Error ? err.message : String(err));
+    });
+    const interval = window.setInterval(() => {
+      // Stop polling once the team is closed; the board won't change further.
+      if (viewRef.current?.team.status === 'closed') return;
+      void fetchDetail(selectedId).catch(() => {
+        /* transient poll failure — keep the last good view */
+      });
+    }, POLL_INTERVAL_MS);
+    return () => window.clearInterval(interval);
+  }, [selectedId, fetchDetail]);
+
+  const refresh = useCallback(async () => {
+    // Clear any prior error before retrying. Without this a successful retry
+    // after a `fetchDetail` failure would refresh `view`/`messages` but leave
+    // `error` set, so the error-branch render short-circuits and the user is
+    // stuck on the banner forever. `fetchTeams` self-clears; `fetchDetail`
+    // deliberately doesn't (so silent polls don't wipe a visible error), so the
+    // clear belongs here on the explicit user-driven retry.
+    setError(null);
+    setRefreshing(true);
+    try {
+      if (selectedId) await fetchDetail(selectedId);
+      else await fetchTeams();
+    } catch (err) {
+      if (mountedRef.current) setError(err instanceof Error ? err.message : String(err));
+    } finally {
+      if (mountedRef.current) setRefreshing(false);
+    }
+  }, [selectedId, fetchDetail, fetchTeams]);
+
+  if (loading) {
+    return (
+      <div className="flex items-center justify-center py-10 text-stone-400 dark:text-neutral-500">
+        <div className="mr-2 h-4 w-4 animate-spin rounded-full border-2 border-ocean-500 border-t-transparent" />
+        <span className="text-sm">{t('intelligence.teams.loading')}</span>
+      </div>
+    );
+  }
+
+  if (error) {
+    return (
+      <div className="space-y-3">
+        <div className="rounded-xl border border-coral-200 bg-coral-50 px-4 py-3 text-sm text-coral-700 dark:border-coral-500/30 dark:bg-coral-500/10 dark:text-coral-300">
+          {t('intelligence.teams.failedToLoad')}: {error}
+        </div>
+        <RefreshButton refreshing={refreshing} onClick={() => void refresh()} t={t} />
+      </div>
+    );
+  }
+
+  if (teams.length === 0) {
+    return (
+      <div className="space-y-4">
+        <p className="text-xs text-stone-400 dark:text-neutral-500">
+          {t('intelligence.teams.subtitle')}
+        </p>
+        <div className="flex flex-col items-center gap-2 rounded-xl border border-dashed border-stone-200 py-12 text-center dark:border-neutral-800">
+          <LuUsers className="h-6 w-6 text-stone-300 dark:text-neutral-600" />
+          <p className="text-sm text-stone-500 dark:text-neutral-400">
+            {t('intelligence.teams.empty')}
+          </p>
+          <p className="max-w-sm text-xs text-stone-400 dark:text-neutral-500">
+            {t('intelligence.teams.emptyHint')}
+          </p>
+        </div>
+      </div>
+    );
+  }
+
+  // Detail view — selected team's board + activity rail.
+  if (selectedId && view) {
+    return (
+      <div className="space-y-3">
+        <div className="flex items-center justify-between gap-2">
+          {teams.length > 1 ? (
+            <button
+              type="button"
+              onClick={deselect}
+              className="inline-flex items-center gap-1 rounded-md border border-stone-200 px-2 py-1 text-[11px] font-medium text-stone-600 hover:bg-stone-50 dark:border-neutral-800 dark:text-neutral-300 dark:hover:bg-neutral-800">
+              <LuArrowLeft className="h-3 w-3" />
+              {t('intelligence.teams.backToList')}
+            </button>
+          ) : (
+            <span />
+          )}
+          <RefreshButton refreshing={refreshing} onClick={() => void refresh()} t={t} />
+        </div>
+
+        <TeamHeader team={view.team} members={view.members} taskCount={view.tasks.length} />
+
+        <div className="grid grid-cols-1 gap-3 xl:grid-cols-[1fr_300px]">
+          <TeamTaskBoard tasks={view.tasks} members={view.members} />
+          <TeamActivityRail messages={messages} members={view.members} />
+        </div>
+      </div>
+    );
+  }
+
+  // List view — pick a team.
+  return (
+    <div className="space-y-3">
+      <div className="flex items-center justify-between gap-2">
+        <p className="text-xs text-stone-400 dark:text-neutral-500">
+          {t('intelligence.teams.subtitle')}
+        </p>
+        <RefreshButton refreshing={refreshing} onClick={() => void refresh()} t={t} />
+      </div>
+      <ul className="divide-y divide-stone-100 overflow-hidden rounded-xl border border-stone-200 bg-white dark:divide-neutral-800 dark:border-neutral-800 dark:bg-neutral-900">
+        {teams.map(team => (
+          <li key={team.id}>
+            <button
+              type="button"
+              onClick={() => setSelectedId(team.id)}
+              className="flex w-full items-center justify-between gap-3 p-3 text-left hover:bg-stone-50 dark:hover:bg-neutral-800/60">
+              <div className="min-w-0">
+                <p className="truncate text-sm font-medium text-stone-800 dark:text-neutral-100">
+                  {team.summary?.trim() || team.leadAgentId}
+                </p>
+                <p className="truncate text-[11px] text-stone-500 dark:text-neutral-400">
+                  {t('intelligence.teams.header.lead')}{' '}
+                  <span className="font-mono">{team.leadAgentId}</span>
+                </p>
+              </div>
+              <span
+                className={`flex-none rounded-md px-1.5 py-0.5 text-[10px] ${
+                  team.status === 'active'
+                    ? 'bg-sage-50 text-sage-700 dark:bg-sage-500/10 dark:text-sage-300'
+                    : 'bg-stone-100 text-stone-500 dark:bg-neutral-800 dark:text-neutral-400'
+                }`}>
+                {team.status === 'active'
+                  ? t('intelligence.teams.status.active')
+                  : t('intelligence.teams.status.closed')}
+              </span>
+            </button>
+          </li>
+        ))}
+      </ul>
+    </div>
+  );
+}
+
+function RefreshButton({
+  refreshing,
+  onClick,
+  t,
+}: {
+  refreshing: boolean;
+  onClick: () => void;
+  t: (key: string) => string;
+}) {
+  return (
+    <button
+      type="button"
+      disabled={refreshing}
+      onClick={onClick}
+      className="inline-flex items-center gap-1 rounded-md border border-stone-200 px-2 py-1 text-[11px] font-medium text-stone-600 hover:bg-stone-50 disabled:opacity-40 dark:border-neutral-800 dark:text-neutral-300 dark:hover:bg-neutral-800">
+      <LuRefreshCw className={`h-3 w-3 ${refreshing ? 'animate-spin' : ''}`} />
+      {t('intelligence.teams.refresh')}
+    </button>
+  );
+}
diff --git a/app/src/components/intelligence/TeamActivityRail.test.tsx b/app/src/components/intelligence/TeamActivityRail.test.tsx
new file mode 100644
index 000000000..3bbb995ea
--- /dev/null
+++ b/app/src/components/intelligence/TeamActivityRail.test.tsx
@@ -0,0 +1,53 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, it, vi } from 'vitest';
+
+import type { AgentTeamMember, TeamMessage } from '../../services/api/agentTeamApi';
+import { TeamActivityRail } from './TeamActivityRail';
+
+vi.mock('../../lib/i18n/I18nContext', () => ({ useT: () => ({ t: (k: string) => k }) }));
+
+function member(id: string, name: string): AgentTeamMember {
+  return {
+    id,
+    teamId: 'team-1',
+    name,
+    memberStatus: 'active',
+    createdAt: '2026-01-01T00:00:00Z',
+    updatedAt: '2026-01-01T00:00:00Z',
+  };
+}
+
+function message(seq: number, from: string, to: string | null, content: string): TeamMessage {
+  return {
+    runId: 'team-1',
+    sequence: seq,
+    eventType: 'team_message',
+    payload: { from, to, content, visibility: 'team' },
+    timestamp: '2026-01-01T00:00:00Z',
+  };
+}
+
+const members = [member('m1', 'planner'), member('m2', 'builder')];
+
+describe('TeamActivityRail', () => {
+  it('shows the empty state when there are no messages', () => {
+    render(<TeamActivityRail messages={[]} members={members} />);
+    expect(screen.getByText('intelligence.teams.activity.empty')).toBeInTheDocument();
+  });
+
+  it('renders sender name and message content', () => {
+    render(
+      <TeamActivityRail messages={[message(1, 'm1', 'm2', 'split the build')]} members={members} />
+    );
+    expect(screen.getByText('planner')).toBeInTheDocument();
+    expect(screen.getByText('split the build')).toBeInTheDocument();
+    expect(screen.getByText('builder', { exact: false })).toBeInTheDocument();
+  });
+
+  it('labels a broadcast (null recipient) as the team', () => {
+    render(<TeamActivityRail messages={[message(1, 'm1', null, 'hi all')]} members={members} />);
+    expect(
+      screen.getByText('intelligence.teams.activity.toTeam', { exact: false })
+    ).toBeInTheDocument();
+  });
+});
diff --git a/app/src/components/intelligence/TeamActivityRail.tsx b/app/src/components/intelligence/TeamActivityRail.tsx
new file mode 100644
index 000000000..a0f8b54a1
--- /dev/null
+++ b/app/src/components/intelligence/TeamActivityRail.tsx
@@ -0,0 +1,77 @@
+/**
+ * TeamActivityRail — the live teammate-message timeline for an agent team
+ * (#3374 PR2).
+ *
+ * This is the surface's differentiator: a board of owned tasks is commodity,
+ * but seeing the agents *talk to each other while they work* is the thing that
+ * makes multi-agent coordination legible. Each entry is a `team_message` run
+ * event resolved to `from → to` (member names, with the member's deterministic
+ * colour) plus the message body. A `null` recipient means the message was sent
+ * to the whole team.
+ *
+ * The rail renders inside a grid cell that collapses *under* the board on
+ * narrow widths (handled by the parent tab's responsive grid), so it is always
+ * visible on a wide Intelligence pane and stacks gracefully when cramped.
+ */
+import { useT } from '../../lib/i18n/I18nContext';
+import type { AgentTeamMember, TeamMessage } from '../../services/api/agentTeamApi';
+import { memberColor } from './memberColors';
+
+interface TeamActivityRailProps {
+  messages: TeamMessage[];
+  members: AgentTeamMember[];
+}
+
+export function TeamActivityRail({ messages, members }: TeamActivityRailProps) {
+  const { t } = useT();
+  const memberById = new Map(members.map(m => [m.id, m]));
+
+  const nameFor = (id: string | null): string => {
+    if (!id) return t('intelligence.teams.activity.toTeam');
+    return memberById.get(id)?.name ?? id;
+  };
+
+  return (
+    <aside className="rounded-lg border border-stone-200 bg-white p-3 dark:border-neutral-800 dark:bg-neutral-900">
+      <div className="mb-2 flex items-center justify-between">
+        <h3 className="text-[11px] font-semibold uppercase tracking-wide text-stone-500 dark:text-neutral-400">
+          {t('intelligence.teams.activity.title')}
+        </h3>
+        <span className="text-[10px] text-stone-400 dark:text-neutral-500">{messages.length}</span>
+      </div>
+
+      {messages.length === 0 ? (
+        <p className="py-6 text-center text-[11px] text-stone-400 dark:text-neutral-500">
+          {t('intelligence.teams.activity.empty')}
+        </p>
+      ) : (
+        <div className="space-y-3">
+          {messages.map(message => {
+            const fromMember = memberById.get(message.payload.from);
+            const fromName = fromMember?.name ?? message.payload.from;
+            const color = memberColor(message.payload.from);
+            return (
+              <div key={`${message.runId}-${message.sequence}`} className="flex gap-2">
+                <span
+                  className="mt-0.5 inline-flex h-5 w-5 flex-none items-center justify-center rounded-full text-[9px] font-semibold text-white"
+                  style={{ backgroundColor: color }}>
+                  {fromName.charAt(0).toUpperCase()}
+                </span>
+                <div className="min-w-0">
+                  <div className="text-[10px] text-stone-400 dark:text-neutral-500">
+                    <b className="text-stone-600 dark:text-neutral-300">{fromName}</b>
+                    {' → '}
+                    {nameFor(message.payload.to)}
+                  </div>
+                  <p className="break-words text-[11px] leading-snug text-stone-700 dark:text-neutral-200">
+                    {message.payload.content}
+                  </p>
+                </div>
+              </div>
+            );
+          })}
+        </div>
+      )}
+    </aside>
+  );
+}
diff --git a/app/src/components/intelligence/TeamHeader.tsx b/app/src/components/intelligence/TeamHeader.tsx
new file mode 100644
index 000000000..e435b9f7a
--- /dev/null
+++ b/app/src/components/intelligence/TeamHeader.tsx
@@ -0,0 +1,83 @@
+/**
+ * TeamHeader — the identity strip above a team's task board (#3374 PR2).
+ *
+ * Shows the team's summary (falling back to its lead agent id), the lead, a
+ * task/member count line, and a compact roster of member chips. Each chip
+ * carries the member's deterministic colour (so a member reads the same on the
+ * header, the board border and the activity rail) and a status dot
+ * (active / pending / idle / stopped). For the small teams this surface targets
+ * (≈2–5 members) a header strip is the right density — a full sidebar would be
+ * heavy furniture for three chips.
+ */
+import { useT } from '../../lib/i18n/I18nContext';
+import type {
+  AgentTeam,
+  AgentTeamMember,
+  AgentTeamMemberStatus,
+} from '../../services/api/agentTeamApi';
+import { memberColor } from './memberColors';
+
+/** Status dot colour per member lifecycle state. */
+const MEMBER_STATUS_DOT: Record<AgentTeamMemberStatus, string> = {
+  active: 'bg-sage-500',
+  pending: 'bg-amber-500',
+  idle: 'bg-stone-400 dark:bg-neutral-500',
+  stopped: 'bg-coral-500',
+};
+
+const MEMBER_STATUS_KEY: Record<AgentTeamMemberStatus, string> = {
+  active: 'intelligence.teams.member.active',
+  pending: 'intelligence.teams.member.pending',
+  idle: 'intelligence.teams.member.idle',
+  stopped: 'intelligence.teams.member.stopped',
+};
+
+interface TeamHeaderProps {
+  team: AgentTeam;
+  members: AgentTeamMember[];
+  taskCount: number;
+}
+
+export function TeamHeader({ team, members, taskCount }: TeamHeaderProps) {
+  const { t } = useT();
+  const title = team.summary?.trim() || team.leadAgentId;
+
+  return (
+    <div className="rounded-lg border border-stone-200 bg-white px-3 py-2.5 dark:border-neutral-800 dark:bg-neutral-900">
+      <div className="flex flex-wrap items-start justify-between gap-3">
+        <div className="min-w-0">
+          <div className="break-words text-sm font-semibold text-stone-800 dark:text-neutral-100">
+            {title}
+          </div>
+          <div className="mt-0.5 text-[11px] text-stone-500 dark:text-neutral-400">
+            {t('intelligence.teams.header.lead')}{' '}
+            <span className="font-mono text-ocean-600 dark:text-ocean-300">{team.leadAgentId}</span>
+            {' · '}
+            {t('intelligence.teams.header.taskCount').replace('{count}', String(taskCount))}
+            {' · '}
+            {t('intelligence.teams.header.memberCount').replace('{count}', String(members.length))}
+          </div>
+        </div>
+
+        <div className="flex flex-wrap items-center gap-1">
+          {members.map(member => (
+            <span
+              key={member.id}
+              title={`${member.agentId ?? member.name} · ${t(MEMBER_STATUS_KEY[member.memberStatus])}`}
+              className="inline-flex items-center gap-1 rounded-md border border-stone-200 bg-stone-50 px-1.5 py-0.5 text-[10px] text-stone-600 dark:border-neutral-700 dark:bg-neutral-800 dark:text-neutral-300">
+              <span
+                className="inline-flex h-3.5 w-3.5 flex-none items-center justify-center rounded-full text-[7px] font-semibold text-white"
+                style={{ backgroundColor: memberColor(member.id) }}>
+                {member.name.charAt(0).toUpperCase()}
+              </span>
+              <span className="max-w-[7rem] truncate">{member.name}</span>
+              <span
+                className={`h-1.5 w-1.5 flex-none rounded-full ${MEMBER_STATUS_DOT[member.memberStatus]}`}
+              />
+            </span>
+          ))}
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/app/src/components/intelligence/TeamTaskBoard.test.tsx b/app/src/components/intelligence/TeamTaskBoard.test.tsx
new file mode 100644
index 000000000..3b42b29a7
--- /dev/null
+++ b/app/src/components/intelligence/TeamTaskBoard.test.tsx
@@ -0,0 +1,124 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, it, vi } from 'vitest';
+
+import type { AgentTeamMember, AgentTeamTask } from '../../services/api/agentTeamApi';
+import { TeamTaskBoard, unmetDepCount } from './TeamTaskBoard';
+
+// i18n → echo the key so assertions can target stable strings.
+vi.mock('../../lib/i18n/I18nContext', () => ({ useT: () => ({ t: (k: string) => k }) }));
+
+function member(id: string, name: string): AgentTeamMember {
+  return {
+    id,
+    teamId: 'team-1',
+    name,
+    memberStatus: 'active',
+    createdAt: '2026-01-01T00:00:00Z',
+    updatedAt: '2026-01-01T00:00:00Z',
+  };
+}
+
+function task(overrides: Partial<AgentTeamTask>): AgentTeamTask {
+  return {
+    id: 'task-x',
+    teamId: 'team-1',
+    title: 'Untitled',
+    status: 'todo',
+    dependsOn: [],
+    gateStatus: 'pending',
+    evidence: [],
+    orderIndex: 0,
+    createdAt: '2026-01-01T00:00:00Z',
+    updatedAt: '2026-01-01T00:00:00Z',
+    ...overrides,
+  };
+}
+
+describe('unmetDepCount', () => {
+  it('counts deps whose task is not done', () => {
+    const byId = new Map<string, AgentTeamTask>([
+      ['a', task({ id: 'a', status: 'done' })],
+      ['b', task({ id: 'b', status: 'in_progress' })],
+    ]);
+    const t = task({ id: 't', dependsOn: ['a', 'b'] });
+    expect(unmetDepCount(t, byId)).toBe(1); // a done, b not
+  });
+
+  it('ignores unknown dep ids', () => {
+    const byId = new Map<string, AgentTeamTask>();
+    expect(unmetDepCount(task({ dependsOn: ['ghost'] }), byId)).toBe(0);
+  });
+});
+
+describe('TeamTaskBoard', () => {
+  const members = [member('m1', 'planner'), member('m2', 'builder')];
+
+  it('renders all five column labels', () => {
+    render(<TeamTaskBoard tasks={[]} members={members} />);
+    for (const key of [
+      'intelligence.teams.column.todo',
+      'intelligence.teams.column.ready',
+      'intelligence.teams.column.inProgress',
+      'intelligence.teams.column.blocked',
+      'intelligence.teams.column.done',
+    ]) {
+      expect(screen.getByText(key)).toBeInTheDocument();
+    }
+  });
+
+  it('shows the owner name and hides the claimed-by line when claimer is the owner', () => {
+    render(
+      <TeamTaskBoard
+        tasks={[task({ id: 't1', title: 'Owned', ownerMemberId: 'm1', claimedByMemberId: 'm1' })]}
+        members={members}
+      />
+    );
+    expect(screen.getByText('planner')).toBeInTheDocument();
+    expect(screen.queryByText('intelligence.teams.pickedUpBy')).not.toBeInTheDocument();
+  });
+
+  it('shows the claimed-by line when a non-owner picked the task up', () => {
+    render(
+      <TeamTaskBoard
+        tasks={[task({ id: 't1', ownerMemberId: 'm1', claimedByMemberId: 'm2' })]}
+        members={members}
+      />
+    );
+    expect(screen.getByText('intelligence.teams.pickedUpBy')).toBeInTheDocument();
+  });
+
+  it('marks an unowned task as unclaimed', () => {
+    render(<TeamTaskBoard tasks={[task({ id: 't1' })]} members={members} />);
+    expect(screen.getByText('intelligence.teams.unclaimed')).toBeInTheDocument();
+  });
+
+  it('renders a dependency lock with the unmet count', () => {
+    const tasks = [
+      task({ id: 'dep', status: 'in_progress' }),
+      task({ id: 't1', dependsOn: ['dep'] }),
+    ];
+    render(<TeamTaskBoard tasks={tasks} members={members} />);
+    // lock badge shows the unmet count "1"
+    expect(screen.getByTitle('intelligence.teams.depLockTitle')).toBeInTheDocument();
+  });
+
+  it('maps known gate states and falls back to the raw label for unknown', () => {
+    const { rerender } = render(
+      <TeamTaskBoard tasks={[task({ gateStatus: 'passed' })]} members={members} />
+    );
+    expect(screen.getByText('intelligence.teams.gate.passed')).toBeInTheDocument();
+
+    rerender(<TeamTaskBoard tasks={[task({ gateStatus: 'weird-state' })]} members={members} />);
+    expect(screen.getByText('intelligence.teams.gate.label')).toBeInTheDocument();
+  });
+
+  it('places a task in the column matching its status', () => {
+    render(
+      <TeamTaskBoard
+        tasks={[task({ id: 't1', title: 'Blocked one', status: 'blocked' })]}
+        members={members}
+      />
+    );
+    expect(screen.getByText('Blocked one')).toBeInTheDocument();
+  });
+});
diff --git a/app/src/components/intelligence/TeamTaskBoard.tsx b/app/src/components/intelligence/TeamTaskBoard.tsx
new file mode 100644
index 000000000..e0f24f871
--- /dev/null
+++ b/app/src/components/intelligence/TeamTaskBoard.tsx
@@ -0,0 +1,242 @@
+/**
+ * TeamTaskBoard — the five-column kanban for a single agent team's tasks
+ * (#3374 PR2).
+ *
+ * A sibling of the conversations `TaskKanbanBoard`, NOT a reuse of it: team
+ * tasks are `AgentTeamTask` (owner / claimed-by / dependency graph / quality
+ * gate) rather than the generic `TaskBoardCard`, so folding them into the
+ * shared component would leak team concepts into the conversations board and
+ * risk regressing it. This board deliberately speaks the same visual language —
+ * the same five-column shell, the same amber/coral column accents, the same
+ * house tokens — so it reads as the same product while owning the team-specific
+ * affordances:
+ *
+ *   - owner colour left-border + owner chip (deterministic per-member colour)
+ *   - "picked up by …" line when the claimer differs from the owner
+ *   - dependency lock badge showing the count of unmet (non-`done`) deps
+ *   - quality-gate badge (pending / passed / failed / unknown)
+ *
+ * Read-only: tasks are driven by agents over the `agent_team_*` RPCs. There is
+ * no drag-and-drop or status mutation here (that is the agents' job).
+ */
+import { LuCircleCheck, LuLock, LuShieldCheck } from 'react-icons/lu';
+
+import { useT } from '../../lib/i18n/I18nContext';
+import type {
+  AgentTeamMember,
+  AgentTeamTask,
+  AgentTeamTaskStatus,
+} from '../../services/api/agentTeamApi';
+import { memberColor, memberTint } from './memberColors';
+
+/** The five columns, in display order. Mirrors the team task lifecycle. */
+const COLUMN_DEFS: { status: AgentTeamTaskStatus; labelKey: string }[] = [
+  { status: 'todo', labelKey: 'intelligence.teams.column.todo' },
+  { status: 'ready', labelKey: 'intelligence.teams.column.ready' },
+  { status: 'in_progress', labelKey: 'intelligence.teams.column.inProgress' },
+  { status: 'blocked', labelKey: 'intelligence.teams.column.blocked' },
+  { status: 'done', labelKey: 'intelligence.teams.column.done' },
+];
+
+/** Per-column accent — mirrors the conversations board's amber/coral tints. */
+const COLUMN_ACCENT: Record<AgentTeamTaskStatus, string> = {
+  todo: '',
+  ready: '',
+  in_progress: '',
+  blocked:
+    'border-l-2 border-l-coral-400 bg-coral-50/60 dark:bg-coral-500/5 dark:border-l-coral-500/60',
+  done: '',
+};
+
+/** Known gate states → badge styling. Unknown strings fall back to neutral. */
+const GATE_STYLE: Record<string, string> = {
+  pending: 'bg-amber-50 text-amber-700 dark:bg-amber-500/10 dark:text-amber-300',
+  passed: 'bg-sage-50 text-sage-700 dark:bg-sage-500/10 dark:text-sage-300',
+  approved: 'bg-sage-50 text-sage-700 dark:bg-sage-500/10 dark:text-sage-300',
+  failed: 'bg-coral-50 text-coral-700 dark:bg-coral-500/10 dark:text-coral-300',
+  rejected: 'bg-coral-50 text-coral-700 dark:bg-coral-500/10 dark:text-coral-300',
+};
+
+const GATE_LABEL_KEY: Record<string, string> = {
+  pending: 'intelligence.teams.gate.pending',
+  passed: 'intelligence.teams.gate.passed',
+  approved: 'intelligence.teams.gate.passed',
+  failed: 'intelligence.teams.gate.failed',
+  rejected: 'intelligence.teams.gate.failed',
+};
+
+/**
+ * Count a task's unmet dependencies: dep ids that resolve to a known task whose
+ * status is not yet `done`. Unknown ids are ignored (the backend rejects them
+ * at assign time, so they shouldn't occur; guarding avoids a phantom lock).
+ */
+export function unmetDepCount(task: AgentTeamTask, byId: Map<string, AgentTeamTask>): number {
+  let unmet = 0;
+  for (const depId of task.dependsOn) {
+    const dep = byId.get(depId);
+    if (dep && dep.status !== 'done') unmet += 1;
+  }
+  return unmet;
+}
+
+interface TeamTaskBoardProps {
+  tasks: AgentTeamTask[];
+  members: AgentTeamMember[];
+}
+
+export function TeamTaskBoard({ tasks, members }: TeamTaskBoardProps) {
+  const { t } = useT();
+
+  const memberById = new Map(members.map(m => [m.id, m]));
+  const taskById = new Map(tasks.map(task => [task.id, task]));
+
+  const cardsByStatus = COLUMN_DEFS.reduce(
+    (acc, column) => {
+      acc[column.status] = [];
+      return acc;
+    },
+    {} as Record<AgentTeamTaskStatus, AgentTeamTask[]>
+  );
+  for (const task of [...tasks].sort((a, b) => a.orderIndex - b.orderIndex)) {
+    (cardsByStatus[task.status] ?? cardsByStatus.todo).push(task);
+  }
+
+  return (
+    <div className="grid grid-cols-1 gap-2 sm:grid-cols-3 lg:grid-cols-5">
+      {COLUMN_DEFS.map(column => {
+        const cards = cardsByStatus[column.status];
+        const accentClass = COLUMN_ACCENT[column.status];
+        return (
+          <section
+            key={column.status}
+            className={`min-w-0 rounded-lg bg-stone-50 p-2 dark:bg-neutral-800/60 ${accentClass}`}>
+            <div className="mb-2 flex items-center justify-between gap-2">
+              <h5 className="truncate text-[11px] font-medium text-stone-600 dark:text-neutral-300">
+                {t(column.labelKey)}
+              </h5>
+              <span className="text-[10px] text-stone-400 dark:text-neutral-500">
+                {cards.length}
+              </span>
+            </div>
+            <div className="space-y-2">
+              {cards.length === 0 ? (
+                <p className="py-2 text-center text-[10px] text-stone-400 dark:text-neutral-600">
+                  {t('intelligence.teams.emptyColumn')}
+                </p>
+              ) : (
+                cards.map(task => (
+                  <TeamTaskCard
+                    key={task.id}
+                    task={task}
+                    memberById={memberById}
+                    unmet={unmetDepCount(task, taskById)}
+                  />
+                ))
+              )}
+            </div>
+          </section>
+        );
+      })}
+    </div>
+  );
+}
+
+function TeamTaskCard({
+  task,
+  memberById,
+  unmet,
+}: {
+  task: AgentTeamTask;
+  memberById: Map<string, AgentTeamMember>;
+  unmet: number;
+}) {
+  const { t } = useT();
+  const owner = task.ownerMemberId ? memberById.get(task.ownerMemberId) : undefined;
+  const claimer = task.claimedByMemberId ? memberById.get(task.claimedByMemberId) : undefined;
+  // Only surface the claimer line when it adds information — i.e. someone other
+  // than the owner picked the task up.
+  const showClaimer = claimer && claimer.id !== task.ownerMemberId;
+
+  // The owner colour left-border is the at-a-glance "whose task is this" cue.
+  const borderStyle = owner ? { borderLeft: `3px solid ${memberColor(owner.id)}` } : undefined;
+
+  return (
+    <article
+      style={borderStyle}
+      className="rounded-lg border border-stone-200 bg-white px-2.5 py-2 shadow-sm dark:border-neutral-800 dark:bg-neutral-900">
+      <p className="break-words text-xs font-medium leading-snug text-stone-800 dark:text-neutral-100">
+        {task.title}
+      </p>
+
+      {showClaimer && (
+        <p className="mt-0.5 text-[10px] text-stone-500 dark:text-neutral-400">
+          {t('intelligence.teams.pickedUpBy').replace('{name}', claimer.name)}
+        </p>
+      )}
+
+      <div className="mt-1.5 flex flex-wrap items-center gap-1">
+        {owner ? (
+          <span
+            style={{ backgroundColor: memberTint(owner.id), color: memberColor(owner.id) }}
+            className="inline-flex max-w-full items-center gap-1 rounded px-1.5 py-0.5 text-[10px]">
+            <span
+              className="inline-flex h-3 w-3 flex-none items-center justify-center rounded-full text-[7px] font-semibold text-white"
+              style={{ backgroundColor: memberColor(owner.id) }}>
+              {owner.name.charAt(0).toUpperCase()}
+            </span>
+            <span className="truncate">{owner.name}</span>
+          </span>
+        ) : (
+          <span className="rounded bg-stone-100 px-1.5 py-0.5 text-[10px] italic text-stone-400 dark:bg-neutral-800 dark:text-neutral-500">
+            {t('intelligence.teams.unclaimed')}
+          </span>
+        )}
+
+        {unmet > 0 && (
+          <span
+            title={t('intelligence.teams.depLockTitle').replace('{count}', String(unmet))}
+            className="inline-flex items-center gap-1 rounded bg-stone-100 px-1.5 py-0.5 text-[10px] text-stone-600 dark:bg-neutral-800 dark:text-neutral-300">
+            <LuLock className="h-2.5 w-2.5" />
+            {unmet}
+          </span>
+        )}
+
+        <GateBadge gateStatus={task.gateStatus} gateReason={task.gateReason} />
+
+        {task.evidence.length > 0 && (
+          <span className="inline-flex items-center gap-1 rounded bg-sky-50 px-1.5 py-0.5 text-[10px] text-sky-700 dark:bg-sky-500/10 dark:text-sky-200">
+            <LuCircleCheck className="h-2.5 w-2.5" />
+            {task.evidence.length}
+          </span>
+        )}
+      </div>
+
+      {task.objective && (
+        <p className="mt-1 break-words text-[11px] leading-snug text-stone-500 dark:text-neutral-400">
+          {task.objective}
+        </p>
+      )}
+    </article>
+  );
+}
+
+function GateBadge({ gateStatus, gateReason }: { gateStatus: string; gateReason?: string | null }) {
+  const { t } = useT();
+  // Defensive mapping: an unseen gate string must render as a neutral chip
+  // showing its raw value, never crash or vanish.
+  const style =
+    GATE_STYLE[gateStatus] ??
+    'bg-stone-100 text-stone-600 dark:bg-neutral-800 dark:text-neutral-300';
+  const label = GATE_LABEL_KEY[gateStatus]
+    ? t(GATE_LABEL_KEY[gateStatus])
+    : t('intelligence.teams.gate.label').replace('{status}', gateStatus);
+
+  return (
+    <span
+      title={gateReason ?? undefined}
+      className={`inline-flex items-center gap-1 rounded px-1.5 py-0.5 text-[10px] ${style}`}>
+      <LuShieldCheck className="h-2.5 w-2.5" />
+      {label}
+    </span>
+  );
+}
diff --git a/app/src/components/intelligence/memberColors.test.ts b/app/src/components/intelligence/memberColors.test.ts
new file mode 100644
index 000000000..bdbb5e9a0
--- /dev/null
+++ b/app/src/components/intelligence/memberColors.test.ts
@@ -0,0 +1,38 @@
+import { describe, expect, it } from 'vitest';
+
+import { memberColor, memberTint } from './memberColors';
+
+const PALETTE = ['#4A83DD', '#34C759', '#E8A728', '#EF4444', '#0EA5E9', '#9B8AFB'];
+
+describe('memberColor', () => {
+  it('is deterministic for the same id', () => {
+    expect(memberColor('member-abc')).toBe(memberColor('member-abc'));
+  });
+
+  it('always returns a house-palette hue', () => {
+    for (const id of ['a', 'bb', 'team-member-1', 'm-42', 'zzz']) {
+      expect(PALETTE).toContain(memberColor(id));
+    }
+  });
+
+  it('falls back to the first hue for empty/undefined ids', () => {
+    expect(memberColor('')).toBe(PALETTE[0]);
+    expect(memberColor(null)).toBe(PALETTE[0]);
+    expect(memberColor(undefined)).toBe(PALETTE[0]);
+  });
+
+  it('spreads distinct ids across more than one hue', () => {
+    const colors = new Set(['m1', 'm2', 'm3', 'm4', 'm5', 'm6'].map(memberColor));
+    expect(colors.size).toBeGreaterThan(1);
+  });
+});
+
+describe('memberTint', () => {
+  it('appends the default alpha byte to the colour', () => {
+    expect(memberTint('m1')).toBe(`${memberColor('m1')}1f`);
+  });
+
+  it('honours a custom alpha suffix', () => {
+    expect(memberTint('m1', '33')).toBe(`${memberColor('m1')}33`);
+  });
+});
diff --git a/app/src/components/intelligence/memberColors.ts b/app/src/components/intelligence/memberColors.ts
new file mode 100644
index 000000000..e035e5edf
--- /dev/null
+++ b/app/src/components/intelligence/memberColors.ts
@@ -0,0 +1,57 @@
+/**
+ * Deterministic member → colour mapping for the agent-team surface (#3374).
+ *
+ * A team member should read as the *same* colour everywhere it appears — the
+ * owner left-border on a task card, the roster chip in the header, and the
+ * avatar in the activity rail. Tailwind can't express a per-member dynamic
+ * class (the class names aren't known at build time, so they'd be purged), so
+ * the colour is resolved to a house-palette hex here and applied via inline
+ * style at the call site — the same approach `memory-workspace.css` already
+ * uses for the ocean accent.
+ *
+ * The palette is drawn from the project's semantic tokens (ocean / sage / amber
+ * / coral / sky / lavender) so the board never introduces an off-brand hue.
+ * Assignment is stable per member id: the same id always maps to the same
+ * colour, and ids spread across the palette before repeating.
+ */
+
+/** House-palette hues used to distinguish team members. Order is the cycle. */
+const MEMBER_PALETTE = [
+  '#4A83DD', // ocean
+  '#34C759', // sage
+  '#E8A728', // amber
+  '#EF4444', // coral
+  '#0EA5E9', // sky (darkened for contrast on white)
+  '#9B8AFB', // lavender accent
+] as const;
+
+/** Stable, order-independent hash of a member id → palette bucket. */
+function hashId(id: string): number {
+  let hash = 0;
+  for (let i = 0; i < id.length; i += 1) {
+    // Classic 31-multiplier string hash; `| 0` keeps it in 32-bit int range.
+    hash = (hash * 31 + id.charCodeAt(i)) | 0;
+  }
+  return Math.abs(hash);
+}
+
+/**
+ * Resolve a member id to a stable house-palette hex colour.
+ *
+ * @param memberId The member's durable id. Empty/undefined → first palette hue.
+ */
+export function memberColor(memberId: string | null | undefined): string {
+  if (!memberId) return MEMBER_PALETTE[0];
+  return MEMBER_PALETTE[hashId(memberId) % MEMBER_PALETTE.length];
+}
+
+/**
+ * A translucent tint of a member's colour, for chip/badge backgrounds. Appends
+ * an alpha byte to the 6-digit hex (e.g. `#4A83DD` + `1f` → ~12% opacity).
+ *
+ * @param memberId The member's durable id.
+ * @param alphaHex Two-hex-digit alpha suffix. Defaults to `1f` (~12%).
+ */
+export function memberTint(memberId: string | null | undefined, alphaHex = '1f'): string {
+  return `${memberColor(memberId)}${alphaHex}`;
+}
diff --git a/app/src/lib/i18n/ar.ts b/app/src/lib/i18n/ar.ts
index 505813534..0984fcd30 100644
--- a/app/src/lib/i18n/ar.ts
+++ b/app/src/lib/i18n/ar.ts
@@ -390,6 +390,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': 'عمل الوكيل',
   'memory.tab.agentWorkDescription':
     'مركز قيادة لكل تشغيل وكيل في الخلفية — مُجمّع حسب ما يحتاج إلى مُدخلاتك، وما يعمل الآن، وما اكتمل.',
+  'memory.tab.teams': 'الفِرَق',
+  'memory.tab.teamsDescription':
+    'فِرَق وكلاء منسَّقة — مَن يملك كل مهمة، وما المحظور، وما الذي يقوله الزملاء لبعضهم البعض.',
   'memory.tab.agents': 'المكتبة',
   'memory.tab.agentsDescription':
     'تصفّح وشغّل الوكلاء المتاحين — لكل منهم أدواته وقدراته ومجال تركيزه.',
@@ -2893,6 +2896,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'عنصر فرعي لسير العمل',
   'intelligence.agentWork.openThread': 'فتح المحادثة',
   'intelligence.agentWork.openWorker': 'فتح العامل',
+  'intelligence.teams.subtitle': 'فِرَق وكلاء منسَّقة والمهام التي يتشاركونها.',
+  'intelligence.teams.loading': 'جارٍ تحميل الفِرَق…',
+  'intelligence.teams.failedToLoad': 'فشل تحميل الفِرَق',
+  'intelligence.teams.empty': 'لا توجد فِرَق وكلاء بعد',
+  'intelligence.teams.emptyHint':
+    'تظهر الفِرَق هنا عندما يُنشئ وكيل وكلاء فرعيين منسَّقين لمشاركة هدف مشترك.',
+  'intelligence.teams.refresh': 'تحديث',
+  'intelligence.teams.backToList': 'كل الفِرَق',
+  'intelligence.teams.status.active': 'نشط',
+  'intelligence.teams.status.closed': 'مغلق',
+  'intelligence.teams.header.lead': 'قائد',
+  'intelligence.teams.header.taskCount': '{count} مهمة',
+  'intelligence.teams.header.memberCount': '{count} عضو',
+  'intelligence.teams.member.active': 'نشط',
+  'intelligence.teams.member.pending': 'قيد الانتظار',
+  'intelligence.teams.member.idle': 'خامل',
+  'intelligence.teams.member.stopped': 'متوقف',
+  'intelligence.teams.column.todo': 'للتنفيذ',
+  'intelligence.teams.column.ready': 'جاهز',
+  'intelligence.teams.column.inProgress': 'قيد التنفيذ',
+  'intelligence.teams.column.blocked': 'محظور',
+  'intelligence.teams.column.done': 'مكتمل',
+  'intelligence.teams.emptyColumn': 'فارغ',
+  'intelligence.teams.unclaimed': 'غير مُسنَد',
+  'intelligence.teams.pickedUpBy': 'تولّاه {name}',
+  'intelligence.teams.depLockTitle': '{count} تبعيات غير مُستوفاة',
+  'intelligence.teams.gate.pending': 'البوابة قيد الانتظار',
+  'intelligence.teams.gate.passed': 'اجتاز البوابة',
+  'intelligence.teams.gate.failed': 'فشل في البوابة',
+  'intelligence.teams.gate.label': 'البوابة: {status}',
+  'intelligence.teams.activity.title': 'نشاط الفريق',
+  'intelligence.teams.activity.empty': 'لا توجد رسائل بعد',
+  'intelligence.teams.activity.toTeam': 'الفريق',
   'intelligence.refine.objectiveDefault': 'حوّل المهمة المصدر إلى مهمة وكيل جاهزة للتنفيذ: {title}',
   'intelligence.refine.sourceLine': 'المصدر: {url}',
   'intelligence.refine.sourceIntake': 'المصدر: استقبال مصدر المهام',
diff --git a/app/src/lib/i18n/bn.ts b/app/src/lib/i18n/bn.ts
index ca8f68952..33be093a8 100644
--- a/app/src/lib/i18n/bn.ts
+++ b/app/src/lib/i18n/bn.ts
@@ -396,6 +396,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': 'এজেন্ট কাজ',
   'memory.tab.agentWorkDescription':
     'প্রতিটি ব্যাকগ্রাউন্ড এজেন্ট রানের জন্য একটি কমান্ড সেন্টার — আপনার ইনপুট প্রয়োজন এমন, চলমান এবং সম্পন্ন অনুযায়ী গোষ্ঠীবদ্ধ।',
+  'memory.tab.teams': 'টিম',
+  'memory.tab.teamsDescription':
+    'সমন্বিত এজেন্ট টিম — কে প্রতিটি কাজের মালিক, কী আটকে আছে, এবং সতীর্থরা একে অপরকে কী বলছে।',
   'memory.tab.agents': 'লাইব্রেরি',
   'memory.tab.agentsDescription':
     'আপনার উপলব্ধ এজেন্টগুলি ব্রাউজ করুন এবং চালান — প্রতিটির নিজস্ব টুল, ক্ষমতা এবং ফোকাস এলাকা রয়েছে।',
@@ -2952,6 +2955,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'ওয়ার্কফ্লো চাইল্ড',
   'intelligence.agentWork.openThread': 'থ্রেড খুলুন',
   'intelligence.agentWork.openWorker': 'ওয়ার্কার খুলুন',
+  'intelligence.teams.subtitle': 'সমন্বিত এজেন্ট টিম এবং তারা যে কাজগুলো ভাগ করে নেয়।',
+  'intelligence.teams.loading': 'টিম লোড হচ্ছে…',
+  'intelligence.teams.failedToLoad': 'টিম লোড করতে ব্যর্থ হয়েছে',
+  'intelligence.teams.empty': 'এখনো কোনো এজেন্ট টিম নেই',
+  'intelligence.teams.emptyHint':
+    'যখন কোনো এজেন্ট একটি লক্ষ্য ভাগ করে নিতে সমন্বিত সাব-এজেন্ট তৈরি করে, তখন টিম এখানে দেখা যায়।',
+  'intelligence.teams.refresh': 'রিফ্রেশ',
+  'intelligence.teams.backToList': 'সব টিম',
+  'intelligence.teams.status.active': 'সক্রিয়',
+  'intelligence.teams.status.closed': 'বন্ধ',
+  'intelligence.teams.header.lead': 'লিড',
+  'intelligence.teams.header.taskCount': '{count} কাজ',
+  'intelligence.teams.header.memberCount': '{count} সদস্য',
+  'intelligence.teams.member.active': 'সক্রিয়',
+  'intelligence.teams.member.pending': 'মুলতুবি',
+  'intelligence.teams.member.idle': 'নিষ্ক্রিয়',
+  'intelligence.teams.member.stopped': 'থেমে গেছে',
+  'intelligence.teams.column.todo': 'করণীয়',
+  'intelligence.teams.column.ready': 'প্রস্তুত',
+  'intelligence.teams.column.inProgress': 'চলমান',
+  'intelligence.teams.column.blocked': 'ব্লকড',
+  'intelligence.teams.column.done': 'সম্পন্ন',
+  'intelligence.teams.emptyColumn': 'খালি',
+  'intelligence.teams.unclaimed': 'অদাবিকৃত',
+  'intelligence.teams.pickedUpBy': '{name} গ্রহণ করেছেন',
+  'intelligence.teams.depLockTitle': '{count}টি অপূর্ণ নির্ভরতা',
+  'intelligence.teams.gate.pending': 'গেট মুলতুবি',
+  'intelligence.teams.gate.passed': 'গেট উত্তীর্ণ',
+  'intelligence.teams.gate.failed': 'গেট ব্যর্থ',
+  'intelligence.teams.gate.label': 'গেট: {status}',
+  'intelligence.teams.activity.title': 'টিম কার্যকলাপ',
+  'intelligence.teams.activity.empty': 'এখনো কোনো বার্তা নেই',
+  'intelligence.teams.activity.toTeam': 'টিম',
   'intelligence.refine.objectiveDefault':
     'উৎস টাস্কটিকে বাস্তবায়নের জন্য প্রস্তুত একটি এজেন্ট টাস্কে রূপান্তর করুন: {title}',
   'intelligence.refine.sourceLine': 'উৎস: {url}',
diff --git a/app/src/lib/i18n/de.ts b/app/src/lib/i18n/de.ts
index c413038f3..f185f38b5 100644
--- a/app/src/lib/i18n/de.ts
+++ b/app/src/lib/i18n/de.ts
@@ -407,6 +407,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': 'Agentenarbeit',
   'memory.tab.agentWorkDescription':
     'Eine Kommandozentrale für jeden Hintergrund-Agentenlauf — gruppiert danach, was deine Eingabe braucht, was läuft und was abgeschlossen ist.',
+  'memory.tab.teams': 'Teams',
+  'memory.tab.teamsDescription':
+    'Koordinierte Agententeams — wer für welche Aufgabe zuständig ist, was blockiert ist und was sich die Teammitglieder gegenseitig mitteilen.',
   'memory.tab.agents': 'Bibliothek',
   'memory.tab.agentsDescription':
     'Verfügbare Agenten durchsuchen und starten — jeder mit eigenen Werkzeugen, Fähigkeiten und Schwerpunkten.',
@@ -3025,6 +3028,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'Workflow-Unterelement',
   'intelligence.agentWork.openThread': 'Thread öffnen',
   'intelligence.agentWork.openWorker': 'Worker öffnen',
+  'intelligence.teams.subtitle': 'Koordinierte Agententeams und die Aufgaben, die sie teilen.',
+  'intelligence.teams.loading': 'Teams werden geladen…',
+  'intelligence.teams.failedToLoad': 'Teams konnten nicht geladen werden',
+  'intelligence.teams.empty': 'Noch keine Agententeams',
+  'intelligence.teams.emptyHint':
+    'Teams erscheinen hier, wenn ein Agent koordinierte Unteragenten erzeugt, die ein gemeinsames Ziel verfolgen.',
+  'intelligence.teams.refresh': 'Aktualisieren',
+  'intelligence.teams.backToList': 'Alle Teams',
+  'intelligence.teams.status.active': 'Aktiv',
+  'intelligence.teams.status.closed': 'Geschlossen',
+  'intelligence.teams.header.lead': 'Leitung',
+  'intelligence.teams.header.taskCount': '{count} Aufgaben',
+  'intelligence.teams.header.memberCount': '{count} Mitglieder',
+  'intelligence.teams.member.active': 'Aktiv',
+  'intelligence.teams.member.pending': 'Ausstehend',
+  'intelligence.teams.member.idle': 'Inaktiv',
+  'intelligence.teams.member.stopped': 'Gestoppt',
+  'intelligence.teams.column.todo': 'Zu tun',
+  'intelligence.teams.column.ready': 'Bereit',
+  'intelligence.teams.column.inProgress': 'In Bearbeitung',
+  'intelligence.teams.column.blocked': 'Blockiert',
+  'intelligence.teams.column.done': 'Fertig',
+  'intelligence.teams.emptyColumn': 'Leer',
+  'intelligence.teams.unclaimed': 'Nicht zugewiesen',
+  'intelligence.teams.pickedUpBy': 'Übernommen von {name}',
+  'intelligence.teams.depLockTitle': '{count} nicht erfüllte Abhängigkeiten',
+  'intelligence.teams.gate.pending': 'Prüfung ausstehend',
+  'intelligence.teams.gate.passed': 'Prüfung bestanden',
+  'intelligence.teams.gate.failed': 'Prüfung fehlgeschlagen',
+  'intelligence.teams.gate.label': 'Prüfung: {status}',
+  'intelligence.teams.activity.title': 'Teamaktivität',
+  'intelligence.teams.activity.empty': 'Noch keine Nachrichten',
+  'intelligence.teams.activity.toTeam': 'Team',
   'intelligence.refine.objectiveDefault':
     'Verwandle die Quellaufgabe in eine umsetzungsbereite Agentenaufgabe: {title}',
   'intelligence.refine.sourceLine': 'Quelle: {url}',
diff --git a/app/src/lib/i18n/en.ts b/app/src/lib/i18n/en.ts
index c63556193..bd9020fe7 100644
--- a/app/src/lib/i18n/en.ts
+++ b/app/src/lib/i18n/en.ts
@@ -436,6 +436,9 @@ const en: TranslationMap = {
   'memory.tab.agentWork': 'Agent Work',
   'memory.tab.agentWorkDescription':
     'A command center for every background agent run — grouped by what needs your input, what is working, and what has finished.',
+  'memory.tab.teams': 'Teams',
+  'memory.tab.teamsDescription':
+    'Coordinated agent teams — who owns each task, what is blocked, and what the teammates are saying to each other.',
   'memory.tab.agents': 'Library',
   'memory.tab.agentsDescription':
     'Browse and run your available agents — each with its own tools, capabilities, and focus area.',
@@ -3491,6 +3494,39 @@ const en: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'Workflow child',
   'intelligence.agentWork.openThread': 'Open thread',
   'intelligence.agentWork.openWorker': 'Open worker',
+  'intelligence.teams.subtitle': 'Coordinated agent teams and the tasks they share.',
+  'intelligence.teams.loading': 'Loading teams…',
+  'intelligence.teams.failedToLoad': 'Failed to load teams',
+  'intelligence.teams.empty': 'No agent teams yet',
+  'intelligence.teams.emptyHint':
+    'Teams appear here when an agent spawns coordinated sub-agents to share a goal.',
+  'intelligence.teams.refresh': 'Refresh',
+  'intelligence.teams.backToList': 'All teams',
+  'intelligence.teams.status.active': 'Active',
+  'intelligence.teams.status.closed': 'Closed',
+  'intelligence.teams.header.lead': 'lead',
+  'intelligence.teams.header.taskCount': '{count} tasks',
+  'intelligence.teams.header.memberCount': '{count} members',
+  'intelligence.teams.member.active': 'Active',
+  'intelligence.teams.member.pending': 'Pending',
+  'intelligence.teams.member.idle': 'Idle',
+  'intelligence.teams.member.stopped': 'Stopped',
+  'intelligence.teams.column.todo': 'To do',
+  'intelligence.teams.column.ready': 'Ready',
+  'intelligence.teams.column.inProgress': 'In progress',
+  'intelligence.teams.column.blocked': 'Blocked',
+  'intelligence.teams.column.done': 'Done',
+  'intelligence.teams.emptyColumn': 'Empty',
+  'intelligence.teams.unclaimed': 'Unclaimed',
+  'intelligence.teams.pickedUpBy': 'Picked up by {name}',
+  'intelligence.teams.depLockTitle': '{count} unmet dependencies',
+  'intelligence.teams.gate.pending': 'Gate pending',
+  'intelligence.teams.gate.passed': 'Gate passed',
+  'intelligence.teams.gate.failed': 'Gate failed',
+  'intelligence.teams.gate.label': 'Gate: {status}',
+  'intelligence.teams.activity.title': 'Team activity',
+  'intelligence.teams.activity.empty': 'No messages yet',
+  'intelligence.teams.activity.toTeam': 'team',
   'intelligence.refine.objectiveDefault':
     'Turn the source task into an implementation-ready agent task: {title}',
   'intelligence.refine.sourceLine': 'Source: {url}',
diff --git a/app/src/lib/i18n/es.ts b/app/src/lib/i18n/es.ts
index f4d4ae699..3f7b176a1 100644
--- a/app/src/lib/i18n/es.ts
+++ b/app/src/lib/i18n/es.ts
@@ -408,6 +408,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': 'Trabajo del agente',
   'memory.tab.agentWorkDescription':
     'Un centro de mando para cada ejecución de agente en segundo plano, agrupado según lo que necesita tu intervención, lo que está en curso y lo que ha terminado.',
+  'memory.tab.teams': 'Equipos',
+  'memory.tab.teamsDescription':
+    'Equipos de agentes coordinados: quién se encarga de cada tarea, qué está bloqueado y qué se dicen los compañeros entre sí.',
   'memory.tab.agents': 'Biblioteca',
   'memory.tab.agentsDescription':
     'Explora y ejecuta los agentes disponibles — cada uno con sus propias herramientas, capacidades y área de enfoque.',
@@ -3010,6 +3013,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'Hijo de flujo de trabajo',
   'intelligence.agentWork.openThread': 'Abrir hilo',
   'intelligence.agentWork.openWorker': 'Abrir trabajador',
+  'intelligence.teams.subtitle': 'Equipos de agentes coordinados y las tareas que comparten.',
+  'intelligence.teams.loading': 'Cargando equipos…',
+  'intelligence.teams.failedToLoad': 'Error al cargar los equipos',
+  'intelligence.teams.empty': 'Aún no hay equipos de agentes',
+  'intelligence.teams.emptyHint':
+    'Los equipos aparecen aquí cuando un agente genera subagentes coordinados para compartir un objetivo.',
+  'intelligence.teams.refresh': 'Actualizar',
+  'intelligence.teams.backToList': 'Todos los equipos',
+  'intelligence.teams.status.active': 'Activo',
+  'intelligence.teams.status.closed': 'Cerrado',
+  'intelligence.teams.header.lead': 'líder',
+  'intelligence.teams.header.taskCount': '{count} tareas',
+  'intelligence.teams.header.memberCount': '{count} miembros',
+  'intelligence.teams.member.active': 'Activo',
+  'intelligence.teams.member.pending': 'Pendiente',
+  'intelligence.teams.member.idle': 'Inactivo',
+  'intelligence.teams.member.stopped': 'Detenido',
+  'intelligence.teams.column.todo': 'Pendiente',
+  'intelligence.teams.column.ready': 'Listo',
+  'intelligence.teams.column.inProgress': 'En progreso',
+  'intelligence.teams.column.blocked': 'Bloqueado',
+  'intelligence.teams.column.done': 'Completado',
+  'intelligence.teams.emptyColumn': 'Vacío',
+  'intelligence.teams.unclaimed': 'Sin asignar',
+  'intelligence.teams.pickedUpBy': 'Asumido por {name}',
+  'intelligence.teams.depLockTitle': '{count} dependencias sin cumplir',
+  'intelligence.teams.gate.pending': 'Control pendiente',
+  'intelligence.teams.gate.passed': 'Control superado',
+  'intelligence.teams.gate.failed': 'Control fallido',
+  'intelligence.teams.gate.label': 'Control: {status}',
+  'intelligence.teams.activity.title': 'Actividad del equipo',
+  'intelligence.teams.activity.empty': 'Aún no hay mensajes',
+  'intelligence.teams.activity.toTeam': 'equipo',
   'intelligence.refine.objectiveDefault':
     'Convierte la tarea de origen en una tarea de agente lista para implementar: {title}',
   'intelligence.refine.sourceLine': 'Origen: {url}',
diff --git a/app/src/lib/i18n/fr.ts b/app/src/lib/i18n/fr.ts
index 7ac0abee5..1eba2a393 100644
--- a/app/src/lib/i18n/fr.ts
+++ b/app/src/lib/i18n/fr.ts
@@ -408,6 +408,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': "Travail de l'agent",
   'memory.tab.agentWorkDescription':
     "Un centre de commande pour chaque exécution d'agent en arrière-plan, regroupée selon ce qui nécessite votre intervention, ce qui est en cours et ce qui est terminé.",
+  'memory.tab.teams': 'Équipes',
+  'memory.tab.teamsDescription':
+    "Équipes d'agents coordonnées — qui s'occupe de chaque tâche, ce qui est bloqué et ce que les coéquipiers se disent entre eux.",
   'memory.tab.agents': 'Bibliothèque',
   'memory.tab.agentsDescription':
     'Parcourez et exécutez vos agents disponibles — chacun avec ses propres outils, capacités et domaine de spécialisation.',
@@ -3025,6 +3028,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'Élément enfant de workflow',
   'intelligence.agentWork.openThread': 'Ouvrir le fil',
   'intelligence.agentWork.openWorker': 'Ouvrir le worker',
+  'intelligence.teams.subtitle': "Équipes d'agents coordonnées et les tâches qu'elles partagent.",
+  'intelligence.teams.loading': 'Chargement des équipes…',
+  'intelligence.teams.failedToLoad': 'Échec du chargement des équipes',
+  'intelligence.teams.empty': "Pas encore d'équipes d'agents",
+  'intelligence.teams.emptyHint':
+    "Les équipes apparaissent ici lorsqu'un agent génère des sous-agents coordonnés pour partager un objectif.",
+  'intelligence.teams.refresh': 'Actualiser',
+  'intelligence.teams.backToList': 'Toutes les équipes',
+  'intelligence.teams.status.active': 'Actif',
+  'intelligence.teams.status.closed': 'Fermé',
+  'intelligence.teams.header.lead': 'responsable',
+  'intelligence.teams.header.taskCount': '{count} tâches',
+  'intelligence.teams.header.memberCount': '{count} membres',
+  'intelligence.teams.member.active': 'Actif',
+  'intelligence.teams.member.pending': 'En attente',
+  'intelligence.teams.member.idle': 'Inactif',
+  'intelligence.teams.member.stopped': 'Arrêté',
+  'intelligence.teams.column.todo': 'À faire',
+  'intelligence.teams.column.ready': 'Prêt',
+  'intelligence.teams.column.inProgress': 'En cours',
+  'intelligence.teams.column.blocked': 'Bloqué',
+  'intelligence.teams.column.done': 'Terminé',
+  'intelligence.teams.emptyColumn': 'Vide',
+  'intelligence.teams.unclaimed': 'Non attribué',
+  'intelligence.teams.pickedUpBy': 'Pris en charge par {name}',
+  'intelligence.teams.depLockTitle': '{count} dépendances non satisfaites',
+  'intelligence.teams.gate.pending': 'Contrôle en attente',
+  'intelligence.teams.gate.passed': 'Contrôle réussi',
+  'intelligence.teams.gate.failed': 'Contrôle échoué',
+  'intelligence.teams.gate.label': 'Contrôle : {status}',
+  'intelligence.teams.activity.title': "Activité de l'équipe",
+  'intelligence.teams.activity.empty': "Aucun message pour l'instant",
+  'intelligence.teams.activity.toTeam': 'équipe',
   'intelligence.refine.sourceIntake': 'Source : réception des sources de tâches',
   'intelligence.refine.repositoryLine': 'Dépôt : {repo}',
   'intelligence.refine.externalTaskLine': 'Tâche externe : {externalId}',
diff --git a/app/src/lib/i18n/hi.ts b/app/src/lib/i18n/hi.ts
index 2dc92ee25..f2680e583 100644
--- a/app/src/lib/i18n/hi.ts
+++ b/app/src/lib/i18n/hi.ts
@@ -394,6 +394,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': 'एजेंट कार्य',
   'memory.tab.agentWorkDescription':
     'हर पृष्ठभूमि एजेंट रन के लिए एक कमांड सेंटर — इस आधार पर समूहित कि किसे आपकी जानकारी चाहिए, क्या चल रहा है और क्या पूरा हो चुका है।',
+  'memory.tab.teams': 'टीमें',
+  'memory.tab.teamsDescription':
+    'समन्वित एजेंट टीमें — हर कार्य का स्वामी कौन है, क्या अवरुद्ध है, और सहयोगी एक-दूसरे से क्या कह रहे हैं।',
   'memory.tab.agents': 'लाइब्रेरी',
   'memory.tab.agentsDescription':
     'अपने उपलब्ध एजेंट ब्राउज़ करें और चलाएं — प्रत्येक के पास अपने टूल, क्षमताएं और फोकस क्षेत्र हैं।',
@@ -2955,6 +2958,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'वर्कफ़्लो चाइल्ड',
   'intelligence.agentWork.openThread': 'थ्रेड खोलें',
   'intelligence.agentWork.openWorker': 'वर्कर खोलें',
+  'intelligence.teams.subtitle': 'समन्वित एजेंट टीमें और वे कार्य जो वे साझा करती हैं।',
+  'intelligence.teams.loading': 'टीमें लोड हो रही हैं…',
+  'intelligence.teams.failedToLoad': 'टीमें लोड करने में विफल',
+  'intelligence.teams.empty': 'अभी तक कोई एजेंट टीम नहीं',
+  'intelligence.teams.emptyHint':
+    'जब कोई एजेंट किसी लक्ष्य को साझा करने के लिए समन्वित सब-एजेंट बनाता है, तब टीमें यहाँ दिखाई देती हैं।',
+  'intelligence.teams.refresh': 'रिफ्रेश करें',
+  'intelligence.teams.backToList': 'सभी टीमें',
+  'intelligence.teams.status.active': 'सक्रिय',
+  'intelligence.teams.status.closed': 'बंद',
+  'intelligence.teams.header.lead': 'लीड',
+  'intelligence.teams.header.taskCount': '{count} कार्य',
+  'intelligence.teams.header.memberCount': '{count} सदस्य',
+  'intelligence.teams.member.active': 'सक्रिय',
+  'intelligence.teams.member.pending': 'लंबित',
+  'intelligence.teams.member.idle': 'निष्क्रिय',
+  'intelligence.teams.member.stopped': 'रुका हुआ',
+  'intelligence.teams.column.todo': 'करना है',
+  'intelligence.teams.column.ready': 'तैयार',
+  'intelligence.teams.column.inProgress': 'प्रगति पर',
+  'intelligence.teams.column.blocked': 'अवरुद्ध',
+  'intelligence.teams.column.done': 'पूर्ण',
+  'intelligence.teams.emptyColumn': 'खाली',
+  'intelligence.teams.unclaimed': 'अनिर्दिष्ट',
+  'intelligence.teams.pickedUpBy': '{name} ने लिया',
+  'intelligence.teams.depLockTitle': '{count} अधूरी निर्भरताएँ',
+  'intelligence.teams.gate.pending': 'गेट लंबित',
+  'intelligence.teams.gate.passed': 'गेट पास',
+  'intelligence.teams.gate.failed': 'गेट विफल',
+  'intelligence.teams.gate.label': 'गेट: {status}',
+  'intelligence.teams.activity.title': 'टीम गतिविधि',
+  'intelligence.teams.activity.empty': 'अभी कोई संदेश नहीं',
+  'intelligence.teams.activity.toTeam': 'टीम',
   'intelligence.refine.objectiveDefault':
     'स्रोत कार्य को कार्यान्वयन के लिए तैयार एजेंट कार्य में बदलें: {title}',
   'intelligence.refine.sourceLine': 'स्रोत: {url}',
diff --git a/app/src/lib/i18n/id.ts b/app/src/lib/i18n/id.ts
index 13dba411a..933098a95 100644
--- a/app/src/lib/i18n/id.ts
+++ b/app/src/lib/i18n/id.ts
@@ -398,6 +398,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': 'Kerja agen',
   'memory.tab.agentWorkDescription':
     'Pusat kendali untuk setiap proses agen latar belakang — dikelompokkan berdasarkan apa yang butuh masukan Anda, apa yang sedang berjalan, dan apa yang sudah selesai.',
+  'memory.tab.teams': 'Tim',
+  'memory.tab.teamsDescription':
+    'Tim agen yang terkoordinasi — siapa yang menangani setiap tugas, apa yang terhambat, dan apa yang dibicarakan rekan satu tim satu sama lain.',
   'memory.tab.agents': 'Perpustakaan',
   'memory.tab.agentsDescription':
     'Telusuri dan jalankan agen yang tersedia — masing-masing dengan alat, kemampuan, dan area fokusnya sendiri.',
@@ -2960,6 +2963,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'Anak alur kerja',
   'intelligence.agentWork.openThread': 'Buka utas',
   'intelligence.agentWork.openWorker': 'Buka pekerja',
+  'intelligence.teams.subtitle': 'Tim agen yang terkoordinasi dan tugas yang mereka bagikan.',
+  'intelligence.teams.loading': 'Memuat tim…',
+  'intelligence.teams.failedToLoad': 'Gagal memuat tim',
+  'intelligence.teams.empty': 'Belum ada tim agen',
+  'intelligence.teams.emptyHint':
+    'Tim muncul di sini ketika sebuah agen membuat sub-agen terkoordinasi untuk berbagi satu tujuan.',
+  'intelligence.teams.refresh': 'Segarkan',
+  'intelligence.teams.backToList': 'Semua tim',
+  'intelligence.teams.status.active': 'Aktif',
+  'intelligence.teams.status.closed': 'Ditutup',
+  'intelligence.teams.header.lead': 'pemimpin',
+  'intelligence.teams.header.taskCount': '{count} tugas',
+  'intelligence.teams.header.memberCount': '{count} anggota',
+  'intelligence.teams.member.active': 'Aktif',
+  'intelligence.teams.member.pending': 'Tertunda',
+  'intelligence.teams.member.idle': 'Diam',
+  'intelligence.teams.member.stopped': 'Dihentikan',
+  'intelligence.teams.column.todo': 'Akan dikerjakan',
+  'intelligence.teams.column.ready': 'Siap',
+  'intelligence.teams.column.inProgress': 'Sedang berjalan',
+  'intelligence.teams.column.blocked': 'Terhambat',
+  'intelligence.teams.column.done': 'Selesai',
+  'intelligence.teams.emptyColumn': 'Kosong',
+  'intelligence.teams.unclaimed': 'Belum diambil',
+  'intelligence.teams.pickedUpBy': 'Diambil oleh {name}',
+  'intelligence.teams.depLockTitle': '{count} dependensi belum terpenuhi',
+  'intelligence.teams.gate.pending': 'Gerbang tertunda',
+  'intelligence.teams.gate.passed': 'Gerbang lolos',
+  'intelligence.teams.gate.failed': 'Gerbang gagal',
+  'intelligence.teams.gate.label': 'Gerbang: {status}',
+  'intelligence.teams.activity.title': 'Aktivitas tim',
+  'intelligence.teams.activity.empty': 'Belum ada pesan',
+  'intelligence.teams.activity.toTeam': 'tim',
   'intelligence.refine.objectiveDefault':
     'Ubah tugas sumber menjadi tugas agen yang siap diimplementasikan: {title}',
   'intelligence.refine.sourceLine': 'Sumber: {url}',
diff --git a/app/src/lib/i18n/it.ts b/app/src/lib/i18n/it.ts
index 65d1e66f7..505e30495 100644
--- a/app/src/lib/i18n/it.ts
+++ b/app/src/lib/i18n/it.ts
@@ -404,6 +404,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': "Lavoro dell'agente",
   'memory.tab.agentWorkDescription':
     'Un centro di comando per ogni esecuzione di agente in background, raggruppata in base a ciò che richiede il tuo intervento, ciò che è in corso e ciò che è terminato.',
+  'memory.tab.teams': 'Team',
+  'memory.tab.teamsDescription':
+    'Team di agenti coordinati — chi è responsabile di ogni attività, cosa è bloccato e cosa si dicono i compagni di team tra loro.',
   'memory.tab.agents': 'Libreria',
   'memory.tab.agentsDescription':
     'Sfoglia e avvia gli agenti disponibili — ognuno con i propri strumenti, capacità e area di specializzazione.',
@@ -3003,6 +3006,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'Figlio del flusso di lavoro',
   'intelligence.agentWork.openThread': 'Apri thread',
   'intelligence.agentWork.openWorker': 'Apri worker',
+  'intelligence.teams.subtitle': 'Team di agenti coordinati e le attività che condividono.',
+  'intelligence.teams.loading': 'Caricamento dei team…',
+  'intelligence.teams.failedToLoad': 'Impossibile caricare i team',
+  'intelligence.teams.empty': 'Ancora nessun team di agenti',
+  'intelligence.teams.emptyHint':
+    'I team compaiono qui quando un agente genera sotto-agenti coordinati per condividere un obiettivo.',
+  'intelligence.teams.refresh': 'Aggiorna',
+  'intelligence.teams.backToList': 'Tutti i team',
+  'intelligence.teams.status.active': 'Attivo',
+  'intelligence.teams.status.closed': 'Chiuso',
+  'intelligence.teams.header.lead': 'responsabile',
+  'intelligence.teams.header.taskCount': '{count} attività',
+  'intelligence.teams.header.memberCount': '{count} membri',
+  'intelligence.teams.member.active': 'Attivo',
+  'intelligence.teams.member.pending': 'In attesa',
+  'intelligence.teams.member.idle': 'Inattivo',
+  'intelligence.teams.member.stopped': 'Interrotto',
+  'intelligence.teams.column.todo': 'Da fare',
+  'intelligence.teams.column.ready': 'Pronto',
+  'intelligence.teams.column.inProgress': 'In corso',
+  'intelligence.teams.column.blocked': 'Bloccato',
+  'intelligence.teams.column.done': 'Fatto',
+  'intelligence.teams.emptyColumn': 'Vuoto',
+  'intelligence.teams.unclaimed': 'Non assegnato',
+  'intelligence.teams.pickedUpBy': 'Preso in carico da {name}',
+  'intelligence.teams.depLockTitle': '{count} dipendenze non soddisfatte',
+  'intelligence.teams.gate.pending': 'Controllo in attesa',
+  'intelligence.teams.gate.passed': 'Controllo superato',
+  'intelligence.teams.gate.failed': 'Controllo fallito',
+  'intelligence.teams.gate.label': 'Controllo: {status}',
+  'intelligence.teams.activity.title': 'Attività del team',
+  'intelligence.teams.activity.empty': 'Nessun messaggio',
+  'intelligence.teams.activity.toTeam': 'team',
   'intelligence.refine.objectiveDefault':
     "Trasforma l'attività di origine in un'attività dell'agente pronta per l'implementazione: {title}",
   'intelligence.refine.sourceLine': 'Origine: {url}',
diff --git a/app/src/lib/i18n/ko.ts b/app/src/lib/i18n/ko.ts
index 45317eb5c..0dcec2d23 100644
--- a/app/src/lib/i18n/ko.ts
+++ b/app/src/lib/i18n/ko.ts
@@ -395,6 +395,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': '에이전트 작업',
   'memory.tab.agentWorkDescription':
     '모든 백그라운드 에이전트 실행을 위한 명령 센터 — 입력이 필요한 것, 진행 중인 것, 완료된 것별로 그룹화됩니다.',
+  'memory.tab.teams': '팀',
+  'memory.tab.teamsDescription':
+    '조율된 에이전트 팀 — 각 작업을 누가 담당하는지, 무엇이 차단되어 있는지, 그리고 팀원들이 서로 무슨 이야기를 나누는지.',
   'memory.tab.agents': '라이브러리',
   'memory.tab.agentsDescription':
     '사용 가능한 에이전트를 탐색하고 실행하세요 — 각 에이전트는 고유한 도구, 기능 및 전문 분야를 갖추고 있습니다.',
@@ -2930,6 +2933,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': '워크플로 하위 항목',
   'intelligence.agentWork.openThread': '스레드 열기',
   'intelligence.agentWork.openWorker': '워커 열기',
+  'intelligence.teams.subtitle': '조율된 에이전트 팀과 그들이 공유하는 작업.',
+  'intelligence.teams.loading': '팀 로딩 중…',
+  'intelligence.teams.failedToLoad': '팀을 불러오지 못했습니다',
+  'intelligence.teams.empty': '아직 에이전트 팀이 없습니다',
+  'intelligence.teams.emptyHint':
+    '에이전트가 하나의 목표를 공유하기 위해 조율된 하위 에이전트를 생성하면 팀이 여기에 표시됩니다.',
+  'intelligence.teams.refresh': '새로고침',
+  'intelligence.teams.backToList': '모든 팀',
+  'intelligence.teams.status.active': '활성',
+  'intelligence.teams.status.closed': '종료됨',
+  'intelligence.teams.header.lead': '리드',
+  'intelligence.teams.header.taskCount': '작업 {count}개',
+  'intelligence.teams.header.memberCount': '구성원 {count}명',
+  'intelligence.teams.member.active': '활성',
+  'intelligence.teams.member.pending': '대기 중',
+  'intelligence.teams.member.idle': '유휴',
+  'intelligence.teams.member.stopped': '중지됨',
+  'intelligence.teams.column.todo': '할 일',
+  'intelligence.teams.column.ready': '준비됨',
+  'intelligence.teams.column.inProgress': '진행 중',
+  'intelligence.teams.column.blocked': '차단됨',
+  'intelligence.teams.column.done': '완료',
+  'intelligence.teams.emptyColumn': '비어 있음',
+  'intelligence.teams.unclaimed': '미할당',
+  'intelligence.teams.pickedUpBy': '{name}님이 맡음',
+  'intelligence.teams.depLockTitle': '충족되지 않은 종속성 {count}개',
+  'intelligence.teams.gate.pending': '게이트 대기 중',
+  'intelligence.teams.gate.passed': '게이트 통과',
+  'intelligence.teams.gate.failed': '게이트 실패',
+  'intelligence.teams.gate.label': '게이트: {status}',
+  'intelligence.teams.activity.title': '팀 활동',
+  'intelligence.teams.activity.empty': '아직 메시지가 없습니다',
+  'intelligence.teams.activity.toTeam': '팀',
   'intelligence.refine.objectiveDefault':
     '소스 작업을 구현 준비가 된 에이전트 작업으로 전환하세요: {title}',
   'intelligence.refine.sourceLine': '소스: {url}',
diff --git a/app/src/lib/i18n/pl.ts b/app/src/lib/i18n/pl.ts
index 9a5ea5a8b..be180eb20 100644
--- a/app/src/lib/i18n/pl.ts
+++ b/app/src/lib/i18n/pl.ts
@@ -401,6 +401,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': 'Praca agenta',
   'memory.tab.agentWorkDescription':
     'Centrum dowodzenia dla każdego przebiegu agenta w tle — pogrupowane według tego, co wymaga Twojej reakcji, co działa i co zostało ukończone.',
+  'memory.tab.teams': 'Zespoły',
+  'memory.tab.teamsDescription':
+    'Skoordynowane zespoły agentów — kto odpowiada za każde zadanie, co jest zablokowane i co członkowie zespołu mówią sobie nawzajem.',
   'memory.tab.agents': 'Biblioteka',
   'memory.tab.agentsDescription':
     'Przeglądaj i uruchamiaj dostępnych agentów — każdy z własnymi narzędziami, możliwościami i obszarem specjalizacji.',
@@ -2992,6 +2995,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'Element podrzędny przepływu',
   'intelligence.agentWork.openThread': 'Otwórz wątek',
   'intelligence.agentWork.openWorker': 'Otwórz proces',
+  'intelligence.teams.subtitle': 'Skoordynowane zespoły agentów i zadania, które dzielą.',
+  'intelligence.teams.loading': 'Ładowanie zespołów…',
+  'intelligence.teams.failedToLoad': 'Nie udało się załadować zespołów',
+  'intelligence.teams.empty': 'Brak zespołów agentów',
+  'intelligence.teams.emptyHint':
+    'Zespoły pojawiają się tutaj, gdy agent tworzy skoordynowane podagenty, aby dzielić wspólny cel.',
+  'intelligence.teams.refresh': 'Odśwież',
+  'intelligence.teams.backToList': 'Wszystkie zespoły',
+  'intelligence.teams.status.active': 'Aktywny',
+  'intelligence.teams.status.closed': 'Zamknięty',
+  'intelligence.teams.header.lead': 'lider',
+  'intelligence.teams.header.taskCount': '{count} zadań',
+  'intelligence.teams.header.memberCount': '{count} członków',
+  'intelligence.teams.member.active': 'Aktywny',
+  'intelligence.teams.member.pending': 'Oczekujący',
+  'intelligence.teams.member.idle': 'Bezczynny',
+  'intelligence.teams.member.stopped': 'Zatrzymany',
+  'intelligence.teams.column.todo': 'Do zrobienia',
+  'intelligence.teams.column.ready': 'Gotowe',
+  'intelligence.teams.column.inProgress': 'W toku',
+  'intelligence.teams.column.blocked': 'Zablokowane',
+  'intelligence.teams.column.done': 'Zrobione',
+  'intelligence.teams.emptyColumn': 'Puste',
+  'intelligence.teams.unclaimed': 'Nieprzypisane',
+  'intelligence.teams.pickedUpBy': 'Przejęte przez {name}',
+  'intelligence.teams.depLockTitle': '{count} niespełnionych zależności',
+  'intelligence.teams.gate.pending': 'Bramka oczekuje',
+  'intelligence.teams.gate.passed': 'Bramka zaliczona',
+  'intelligence.teams.gate.failed': 'Bramka niezaliczona',
+  'intelligence.teams.gate.label': 'Bramka: {status}',
+  'intelligence.teams.activity.title': 'Aktywność zespołu',
+  'intelligence.teams.activity.empty': 'Brak wiadomości',
+  'intelligence.teams.activity.toTeam': 'zespół',
   'intelligence.refine.objectiveDefault':
     'Przekształć zadanie źródłowe w gotowe do wdrożenia zadanie agenta: {title}',
   'intelligence.refine.sourceLine': 'Źródło: {url}',
diff --git a/app/src/lib/i18n/pt.ts b/app/src/lib/i18n/pt.ts
index 3d01393bd..8bf34e9a3 100644
--- a/app/src/lib/i18n/pt.ts
+++ b/app/src/lib/i18n/pt.ts
@@ -408,6 +408,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': 'Trabalho do agente',
   'memory.tab.agentWorkDescription':
     'Um centro de comando para cada execução de agente em segundo plano, agrupada conforme o que precisa da sua intervenção, o que está em andamento e o que foi concluído.',
+  'memory.tab.teams': 'Equipes',
+  'memory.tab.teamsDescription':
+    'Equipes de agentes coordenadas — quem é responsável por cada tarefa, o que está bloqueado e o que os colegas de equipe estão dizendo uns aos outros.',
   'memory.tab.agents': 'Biblioteca',
   'memory.tab.agentsDescription':
     'Navegue e execute os agentes disponíveis — cada um com suas próprias ferramentas, capacidades e área de foco.',
@@ -3007,6 +3010,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'Filho de fluxo de trabalho',
   'intelligence.agentWork.openThread': 'Abrir tópico',
   'intelligence.agentWork.openWorker': 'Abrir trabalhador',
+  'intelligence.teams.subtitle': 'Equipes de agentes coordenadas e as tarefas que compartilham.',
+  'intelligence.teams.loading': 'Carregando equipes…',
+  'intelligence.teams.failedToLoad': 'Falha ao carregar equipes',
+  'intelligence.teams.empty': 'Ainda não há equipes de agentes',
+  'intelligence.teams.emptyHint':
+    'As equipes aparecem aqui quando um agente gera subagentes coordenados para compartilhar um objetivo.',
+  'intelligence.teams.refresh': 'Atualizar',
+  'intelligence.teams.backToList': 'Todas as equipes',
+  'intelligence.teams.status.active': 'Ativo',
+  'intelligence.teams.status.closed': 'Fechado',
+  'intelligence.teams.header.lead': 'líder',
+  'intelligence.teams.header.taskCount': '{count} tarefas',
+  'intelligence.teams.header.memberCount': '{count} membros',
+  'intelligence.teams.member.active': 'Ativo',
+  'intelligence.teams.member.pending': 'Pendente',
+  'intelligence.teams.member.idle': 'Ocioso',
+  'intelligence.teams.member.stopped': 'Parado',
+  'intelligence.teams.column.todo': 'A fazer',
+  'intelligence.teams.column.ready': 'Pronto',
+  'intelligence.teams.column.inProgress': 'Em andamento',
+  'intelligence.teams.column.blocked': 'Bloqueado',
+  'intelligence.teams.column.done': 'Concluído',
+  'intelligence.teams.emptyColumn': 'Vazio',
+  'intelligence.teams.unclaimed': 'Não atribuído',
+  'intelligence.teams.pickedUpBy': 'Assumido por {name}',
+  'intelligence.teams.depLockTitle': '{count} dependências não atendidas',
+  'intelligence.teams.gate.pending': 'Verificação pendente',
+  'intelligence.teams.gate.passed': 'Verificação aprovada',
+  'intelligence.teams.gate.failed': 'Verificação reprovada',
+  'intelligence.teams.gate.label': 'Verificação: {status}',
+  'intelligence.teams.activity.title': 'Atividade da equipe',
+  'intelligence.teams.activity.empty': 'Nenhuma mensagem ainda',
+  'intelligence.teams.activity.toTeam': 'equipe',
   'intelligence.refine.objectiveDefault':
     'Transforme a tarefa de origem em uma tarefa de agente pronta para implementação: {title}',
   'intelligence.refine.sourceLine': 'Origem: {url}',
diff --git a/app/src/lib/i18n/ru.ts b/app/src/lib/i18n/ru.ts
index 0fec4603f..ed3f9894e 100644
--- a/app/src/lib/i18n/ru.ts
+++ b/app/src/lib/i18n/ru.ts
@@ -400,6 +400,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': 'Работа агента',
   'memory.tab.agentWorkDescription':
     'Центр управления для каждого фонового запуска агента — сгруппировано по тому, что требует вашего участия, что выполняется и что завершено.',
+  'memory.tab.teams': 'Команды',
+  'memory.tab.teamsDescription':
+    'Скоординированные команды агентов — кто отвечает за каждую задачу, что заблокировано и что участники говорят друг другу.',
   'memory.tab.agents': 'Библиотека',
   'memory.tab.agentsDescription':
     'Просматривайте и запускайте доступных агентов — у каждого свои инструменты, возможности и область специализации.',
@@ -2979,6 +2982,40 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': 'Дочерний элемент рабочего процесса',
   'intelligence.agentWork.openThread': 'Открыть тред',
   'intelligence.agentWork.openWorker': 'Открыть воркер',
+  'intelligence.teams.subtitle':
+    'Скоординированные команды агентов и задачи, которые они разделяют.',
+  'intelligence.teams.loading': 'Загрузка команд…',
+  'intelligence.teams.failedToLoad': 'Не удалось загрузить команды',
+  'intelligence.teams.empty': 'Пока нет команд агентов',
+  'intelligence.teams.emptyHint':
+    'Команды появляются здесь, когда агент создаёт скоординированных субагентов для совместного достижения цели.',
+  'intelligence.teams.refresh': 'Обновить',
+  'intelligence.teams.backToList': 'Все команды',
+  'intelligence.teams.status.active': 'Активна',
+  'intelligence.teams.status.closed': 'Закрыта',
+  'intelligence.teams.header.lead': 'ведущий',
+  'intelligence.teams.header.taskCount': '{count} задач',
+  'intelligence.teams.header.memberCount': '{count} участников',
+  'intelligence.teams.member.active': 'Активен',
+  'intelligence.teams.member.pending': 'Ожидает',
+  'intelligence.teams.member.idle': 'Простаивает',
+  'intelligence.teams.member.stopped': 'Остановлен',
+  'intelligence.teams.column.todo': 'К выполнению',
+  'intelligence.teams.column.ready': 'Готово к работе',
+  'intelligence.teams.column.inProgress': 'В работе',
+  'intelligence.teams.column.blocked': 'Заблокировано',
+  'intelligence.teams.column.done': 'Завершено',
+  'intelligence.teams.emptyColumn': 'Пусто',
+  'intelligence.teams.unclaimed': 'Не назначено',
+  'intelligence.teams.pickedUpBy': 'Взял в работу {name}',
+  'intelligence.teams.depLockTitle': '{count} невыполненных зависимостей',
+  'intelligence.teams.gate.pending': 'Проверка ожидается',
+  'intelligence.teams.gate.passed': 'Проверка пройдена',
+  'intelligence.teams.gate.failed': 'Проверка не пройдена',
+  'intelligence.teams.gate.label': 'Проверка: {status}',
+  'intelligence.teams.activity.title': 'Активность команды',
+  'intelligence.teams.activity.empty': 'Сообщений пока нет',
+  'intelligence.teams.activity.toTeam': 'команда',
   'intelligence.refine.objectiveDefault':
     'Превратите исходную задачу в готовую к реализации задачу агента: {title}',
   'intelligence.refine.sourceLine': 'Источник: {url}',
diff --git a/app/src/lib/i18n/zh-CN.ts b/app/src/lib/i18n/zh-CN.ts
index 4d8de78ba..e63a0d543 100644
--- a/app/src/lib/i18n/zh-CN.ts
+++ b/app/src/lib/i18n/zh-CN.ts
@@ -379,6 +379,9 @@ const messages: TranslationMap = {
   'memory.tab.agentWork': '智能体工作',
   'memory.tab.agentWorkDescription':
     '所有后台智能体运行的指挥中心——按需要你处理的、正在运行的和已完成的进行分组。',
+  'memory.tab.teams': '团队',
+  'memory.tab.teamsDescription':
+    '协同的智能体团队——谁负责每项任务、有什么被阻塞，以及队友之间在交流什么。',
   'memory.tab.agents': '资料库',
   'memory.tab.agentsDescription':
     '浏览并运行可用的智能体——每个智能体都有自己的工具、能力和专注领域。',
@@ -2812,6 +2815,39 @@ const messages: TranslationMap = {
   'intelligence.agentWork.kind.workflowChild': '工作流子项',
   'intelligence.agentWork.openThread': '打开会话',
   'intelligence.agentWork.openWorker': '打开工作线程',
+  'intelligence.teams.subtitle': '协同的智能体团队及其共享的任务。',
+  'intelligence.teams.loading': '正在加载团队…',
+  'intelligence.teams.failedToLoad': '加载团队失败',
+  'intelligence.teams.empty': '暂无智能体团队',
+  'intelligence.teams.emptyHint':
+    '当某个智能体生成协同的子智能体以共享同一目标时，团队会显示在这里。',
+  'intelligence.teams.refresh': '刷新',
+  'intelligence.teams.backToList': '所有团队',
+  'intelligence.teams.status.active': '活跃',
+  'intelligence.teams.status.closed': '已关闭',
+  'intelligence.teams.header.lead': '负责人',
+  'intelligence.teams.header.taskCount': '{count} 个任务',
+  'intelligence.teams.header.memberCount': '{count} 名成员',
+  'intelligence.teams.member.active': '活跃',
+  'intelligence.teams.member.pending': '待处理',
+  'intelligence.teams.member.idle': '空闲',
+  'intelligence.teams.member.stopped': '已停止',
+  'intelligence.teams.column.todo': '待办',
+  'intelligence.teams.column.ready': '就绪',
+  'intelligence.teams.column.inProgress': '进行中',
+  'intelligence.teams.column.blocked': '已阻塞',
+  'intelligence.teams.column.done': '已完成',
+  'intelligence.teams.emptyColumn': '空',
+  'intelligence.teams.unclaimed': '未认领',
+  'intelligence.teams.pickedUpBy': '由 {name} 接手',
+  'intelligence.teams.depLockTitle': '{count} 项未满足的依赖',
+  'intelligence.teams.gate.pending': '关卡待定',
+  'intelligence.teams.gate.passed': '关卡通过',
+  'intelligence.teams.gate.failed': '关卡失败',
+  'intelligence.teams.gate.label': '关卡：{status}',
+  'intelligence.teams.activity.title': '团队动态',
+  'intelligence.teams.activity.empty': '暂无消息',
+  'intelligence.teams.activity.toTeam': '团队',
   'intelligence.refine.objectiveDefault': '将来源任务转化为可立即实施的智能体任务：{title}',
   'intelligence.refine.sourceLine': '来源：{url}',
   'intelligence.refine.sourceIntake': '来源：任务来源接收',
diff --git a/app/src/pages/Intelligence.tsx b/app/src/pages/Intelligence.tsx
index cc734e050..f29a3d504 100644
--- a/app/src/pages/Intelligence.tsx
+++ b/app/src/pages/Intelligence.tsx
@@ -6,6 +6,7 @@ import IntelligenceAgentsTab from '../components/intelligence/IntelligenceAgents
 import IntelligenceAgentWorkTab from '../components/intelligence/IntelligenceAgentWorkTab';
 import IntelligenceSubconsciousTab from '../components/intelligence/IntelligenceSubconsciousTab';
 import IntelligenceTasksTab from '../components/intelligence/IntelligenceTasksTab';
+import IntelligenceTeamsTab from '../components/intelligence/IntelligenceTeamsTab';
 import MemorySection from '../components/intelligence/MemorySection';
 import ModelCouncilTab from '../components/intelligence/ModelCouncilTab';
 import { ToastContainer } from '../components/intelligence/Toast';
@@ -28,6 +29,7 @@ type IntelligenceTab =
   | 'subconscious'
   | 'tasks'
   | 'agent-work'
+  | 'teams'
   | 'agents'
   | 'workflows'
   | 'council';
@@ -37,6 +39,7 @@ const INTELLIGENCE_TABS: IntelligenceTab[] = [
   'subconscious',
   'tasks',
   'agent-work',
+  'teams',
   'agents',
   'workflows',
   'council',
@@ -146,6 +149,7 @@ export default function Intelligence() {
       label: t('memory.tab.agentWork'),
       description: t('memory.tab.agentWorkDescription'),
     },
+    { id: 'teams', label: t('memory.tab.teams'), description: t('memory.tab.teamsDescription') },
     { id: 'memory', label: t('memory.tab.memory') },
     { id: 'subconscious', label: t('memory.tab.subconscious') },
     {
@@ -235,6 +239,8 @@ export default function Intelligence() {
 
             {activeTab === 'agent-work' && <IntelligenceAgentWorkTab />}
 
+            {activeTab === 'teams' && <IntelligenceTeamsTab />}
+
             {activeTab === 'agents' && <IntelligenceAgentsTab />}
 
             {activeTab === 'workflows' && <WorkflowsTab />}
diff --git a/app/src/services/api/agentTeamApi.test.ts b/app/src/services/api/agentTeamApi.test.ts
new file mode 100644
index 000000000..88dcaac90
--- /dev/null
+++ b/app/src/services/api/agentTeamApi.test.ts
@@ -0,0 +1,125 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+import { callCoreRpc } from '../coreRpcClient';
+import { agentTeamApi } from './agentTeamApi';
+
+vi.mock('../coreRpcClient', () => ({ callCoreRpc: vi.fn() }));
+
+const mockCall = vi.mocked(callCoreRpc);
+
+beforeEach(() => {
+  vi.clearAllMocks();
+});
+
+describe('agentTeamApi.list', () => {
+  it('unwraps the { teams, count } envelope to an array', async () => {
+    mockCall.mockResolvedValueOnce({ teams: [{ id: 't1' }, { id: 't2' }], count: 2 });
+    const teams = await agentTeamApi.list();
+    expect(teams).toHaveLength(2);
+    expect(teams[0].id).toBe('t1');
+    expect(mockCall).toHaveBeenCalledWith({ method: 'openhuman.agent_team_list', params: {} });
+  });
+
+  it('returns [] when the envelope omits teams', async () => {
+    mockCall.mockResolvedValueOnce({ count: 0 });
+    expect(await agentTeamApi.list()).toEqual([]);
+  });
+
+  it('forwards filters as params', async () => {
+    mockCall.mockResolvedValueOnce({ teams: [], count: 0 });
+    await agentTeamApi.list({ parentThreadId: 'thread-1', status: 'active', limit: 10 });
+    expect(mockCall).toHaveBeenCalledWith({
+      method: 'openhuman.agent_team_list',
+      params: { parentThreadId: 'thread-1', status: 'active', limit: 10 },
+    });
+  });
+
+  it('rejects a non-positive limit without calling core', async () => {
+    await expect(agentTeamApi.list({ limit: 0 })).rejects.toThrow('positive integer');
+    await expect(agentTeamApi.list({ limit: 1.5 })).rejects.toThrow('positive integer');
+    expect(mockCall).not.toHaveBeenCalled();
+  });
+});
+
+describe('agentTeamApi.get', () => {
+  it('unwraps { team } to the TeamView', async () => {
+    const view = { team: { id: 't1' }, members: [], tasks: [] };
+    mockCall.mockResolvedValueOnce({ team: view });
+    const result = await agentTeamApi.get('t1');
+    expect(result).toBe(view);
+    expect(mockCall).toHaveBeenCalledWith({
+      method: 'openhuman.agent_team_get',
+      params: { teamId: 't1' },
+    });
+  });
+
+  it('returns null when the team is unknown ({ team: null })', async () => {
+    mockCall.mockResolvedValueOnce({ team: null });
+    expect(await agentTeamApi.get('missing')).toBeNull();
+  });
+
+  it('throws when teamId is empty, without calling core', async () => {
+    await expect(agentTeamApi.get('')).rejects.toThrow('teamId is required');
+    expect(mockCall).not.toHaveBeenCalled();
+  });
+});
+
+describe('agentTeamApi.listMessages', () => {
+  it('unwraps { messages } and narrows each run-event payload', async () => {
+    mockCall.mockResolvedValueOnce({
+      messages: [
+        {
+          runId: 'team-1',
+          sequence: 1,
+          eventType: 'team_message',
+          payload: { from: 'm1', to: 'm2', content: 'hi', visibility: 'team' },
+          timestamp: '2026-01-01T00:00:00Z',
+        },
+      ],
+    });
+    const messages = await agentTeamApi.listMessages('team-1');
+    expect(messages).toHaveLength(1);
+    expect(messages[0].payload).toEqual({
+      from: 'm1',
+      to: 'm2',
+      content: 'hi',
+      visibility: 'team',
+    });
+  });
+
+  it('defends against a malformed payload (missing fields → safe defaults)', async () => {
+    mockCall.mockResolvedValueOnce({
+      messages: [
+        {
+          runId: 'team-1',
+          sequence: 2,
+          eventType: 'team_message',
+          payload: { from: 'm1' },
+          timestamp: '2026-01-01T00:00:00Z',
+        },
+      ],
+    });
+    const [msg] = await agentTeamApi.listMessages('team-1');
+    expect(msg.payload).toEqual({ from: 'm1', to: null, content: '', visibility: 'team' });
+  });
+
+  it('returns [] when the envelope omits messages', async () => {
+    mockCall.mockResolvedValueOnce({});
+    expect(await agentTeamApi.listMessages('team-1')).toEqual([]);
+  });
+
+  it('forwards an explicit limit, omits it otherwise', async () => {
+    mockCall.mockResolvedValueOnce({ messages: [] });
+    await agentTeamApi.listMessages('team-1', 50);
+    expect(mockCall).toHaveBeenCalledWith({
+      method: 'openhuman.agent_team_list_messages',
+      params: { teamId: 'team-1', limit: 50 },
+    });
+    mockCall.mockResolvedValueOnce({ messages: [] });
+    await agentTeamApi.listMessages('team-1');
+    expect(mockCall).toHaveBeenLastCalledWith({
+      method: 'openhuman.agent_team_list_messages',
+      params: { teamId: 'team-1' },
+    });
+  });
+});
diff --git a/app/src/services/api/agentTeamApi.ts b/app/src/services/api/agentTeamApi.ts
new file mode 100644
index 000000000..6fe8aa94b
--- /dev/null
+++ b/app/src/services/api/agentTeamApi.ts
@@ -0,0 +1,197 @@
+/**
+ * Frontend client for the durable agent-team coordination surface (#3374).
+ *
+ * Wraps the read paths of the `openhuman.agent_team_*` controller family that
+ * landed with the durable team ledger (PR1, #3546): `agent_team_list`,
+ * `agent_team_get`, and `agent_team_list_messages`. PR2 is a READ-ONLY surface
+ * — creating teams, assigning/claiming tasks and posting messages is the
+ * agents' job (and a later PR), so only the three read methods live here.
+ *
+ * The Rust controllers serialize their row types with
+ * `#[serde(rename_all = "camelCase")]`, so the wire payload is already camelCase
+ * and no snake/camel transform is needed. What this client DOES own is
+ * normalizing the controllers' inconsistent response envelopes — `get` returns
+ * `{ team }`, `list` returns `{ teams, count }`, `list_messages` returns
+ * `{ messages }` — into the clean shapes the UI consumes. Quarantining that
+ * here means components never see the wrapper objects, and if the backend later
+ * normalizes its envelopes only this file changes.
+ */
+import debug from 'debug';
+
+import { callCoreRpc } from '../coreRpcClient';
+
+const log = debug('agentTeamApi');
+
+/** Lifecycle of a team. Mirrors Rust `AgentTeamStatus`. */
+export type AgentTeamStatus = 'active' | 'closed';
+
+/** Lifecycle of a single member. Mirrors Rust `AgentTeamMemberStatus`. */
+export type AgentTeamMemberStatus = 'pending' | 'active' | 'idle' | 'stopped';
+
+/** Lifecycle of a coordination task. Mirrors Rust `AgentTeamTaskStatus`. */
+export type AgentTeamTaskStatus = 'todo' | 'ready' | 'in_progress' | 'blocked' | 'done';
+
+/** A team header row. Mirrors Rust `AgentTeam`. */
+export interface AgentTeam {
+  id: string;
+  parentThreadId?: string | null;
+  leadAgentId: string;
+  status: AgentTeamStatus;
+  summary?: string | null;
+  createdAt: string;
+  updatedAt: string;
+  closedAt?: string | null;
+}
+
+/** A member of a team. Mirrors Rust `AgentTeamMember`. */
+export interface AgentTeamMember {
+  id: string;
+  teamId: string;
+  name: string;
+  agentId?: string | null;
+  memberStatus: AgentTeamMemberStatus;
+  currentTaskId?: string | null;
+  workerThreadId?: string | null;
+  runId?: string | null;
+  createdAt: string;
+  updatedAt: string;
+}
+
+/** A coordination task within a team. Mirrors Rust `AgentTeamTask`. */
+export interface AgentTeamTask {
+  id: string;
+  teamId: string;
+  title: string;
+  objective?: string | null;
+  status: AgentTeamTaskStatus;
+  ownerMemberId?: string | null;
+  claimedByMemberId?: string | null;
+  claimToken?: string | null;
+  /** Task ids this task depends on. Unmet (non-`done`) deps block a claim. */
+  dependsOn: string[];
+  /** Free-form gate status. Known: `pending` / `passed` / `failed`; default `pending`. */
+  gateStatus: string;
+  gateReason?: string | null;
+  evidence: string[];
+  sourceRunId?: string | null;
+  orderIndex: number;
+  createdAt: string;
+  updatedAt: string;
+}
+
+/** A team plus its members and tasks. Mirrors Rust `TeamView` (the `get` shape). */
+export interface TeamView {
+  team: AgentTeam;
+  members: AgentTeamMember[];
+  tasks: AgentTeamTask[];
+}
+
+/** Parsed payload of a `team_message` run event. Mirrors the Rust `json!` body. */
+export interface TeamMessagePayload {
+  from: string;
+  to: string | null;
+  content: string;
+  visibility: string;
+}
+
+/** A teammate message. A `team_message` run event with its payload typed. */
+export interface TeamMessage {
+  runId: string;
+  sequence: number;
+  eventType: string;
+  payload: TeamMessagePayload;
+  timestamp: string;
+}
+
+/** Raw `RunEvent` wire shape before the payload is narrowed to a message. */
+interface RawRunEvent {
+  runId: string;
+  sequence: number;
+  eventType: string;
+  payload: unknown;
+  timestamp: string;
+}
+
+/** Optional filters for {@link agentTeamApi.list}. Mirrors `AgentTeamListRequest`. */
+export interface AgentTeamListParams {
+  parentThreadId?: string;
+  status?: AgentTeamStatus;
+  limit?: number;
+  offset?: number;
+}
+
+function assertPositiveInt(value: number | undefined, label: string): void {
+  if (value !== undefined && (!Number.isInteger(value) || value <= 0)) {
+    throw new Error(`agentTeamApi: ${label} must be a positive integer`);
+  }
+}
+
+/** Coerce a raw run-event payload into a typed message payload, defensively. */
+function readMessagePayload(payload: unknown): TeamMessagePayload {
+  const p = (payload ?? {}) as Record<string, unknown>;
+  return {
+    from: typeof p.from === 'string' ? p.from : '',
+    to: typeof p.to === 'string' ? p.to : null,
+    content: typeof p.content === 'string' ? p.content : '',
+    visibility: typeof p.visibility === 'string' ? p.visibility : 'team',
+  };
+}
+
+export const agentTeamApi = {
+  /**
+   * List team headers, newest first. Filters are optional; `parentThreadId`
+   * scopes to one conversation, `status` to active/closed.
+   *
+   * Unwraps the controller's `{ teams, count }` envelope down to `AgentTeam[]`.
+   */
+  list: async (params: AgentTeamListParams = {}): Promise<AgentTeam[]> => {
+    assertPositiveInt(params.limit, 'limit');
+    log('list params=%o', params);
+    const response = await callCoreRpc<{ teams?: AgentTeam[]; count?: number }>({
+      method: 'openhuman.agent_team_list',
+      params,
+    });
+    const teams = response.teams ?? [];
+    log('list received teams=%d count=%o', teams.length, response.count);
+    return teams;
+  },
+
+  /**
+   * Fetch one team plus its members and tasks. Returns `null` when the id is
+   * unknown (the controller answers `{ team: null }`).
+   */
+  get: async (teamId: string): Promise<TeamView | null> => {
+    if (!teamId) throw new Error('agentTeamApi.get: teamId is required');
+    log('get teamId=%s', teamId);
+    const response = await callCoreRpc<{ team: TeamView | null }>({
+      method: 'openhuman.agent_team_get',
+      params: { teamId },
+    });
+    log('get found=%o', response.team != null);
+    return response.team ?? null;
+  },
+
+  /**
+   * List a team's teammate messages in sequence order. Unwraps the
+   * `{ messages }` envelope and narrows each run-event payload to a typed
+   * {@link TeamMessagePayload}.
+   */
+  listMessages: async (teamId: string, limit?: number): Promise<TeamMessage[]> => {
+    if (!teamId) throw new Error('agentTeamApi.listMessages: teamId is required');
+    assertPositiveInt(limit, 'limit');
+    log('listMessages teamId=%s limit=%o', teamId, limit);
+    const response = await callCoreRpc<{ messages?: RawRunEvent[] }>({
+      method: 'openhuman.agent_team_list_messages',
+      params: limit === undefined ? { teamId } : { teamId, limit },
+    });
+    const messages = (response.messages ?? []).map(event => ({
+      runId: event.runId,
+      sequence: event.sequence,
+      eventType: event.eventType,
+      payload: readMessagePayload(event.payload),
+      timestamp: event.timestamp,
+    }));
+    log('listMessages received=%d', messages.length);
+    return messages;
+  },
+};