diff --git a/openframe-frontend-core/src/components/features/board/index.ts b/openframe-frontend-core/src/components/features/board/index.ts
index c3be134a7..6a85380a6 100644
--- a/openframe-frontend-core/src/components/features/board/index.ts
+++ b/openframe-frontend-core/src/components/features/board/index.ts
@@ -21,6 +21,8 @@ export type {
   BoardColumnDef,
   BoardPriority,
   BoardTicket,
+  BoardTicketActivity,
+  BoardTicketActivityKind,
   BoardTicketAssignee,
   BoardTicketPendingApproval,
 } from './types';
diff --git a/openframe-frontend-core/src/components/features/board/ticket-card.tsx b/openframe-frontend-core/src/components/features/board/ticket-card.tsx
index 3960e37fe..d0cf19fbc 100644
--- a/openframe-frontend-core/src/components/features/board/ticket-card.tsx
+++ b/openframe-frontend-core/src/components/features/board/ticket-card.tsx
@@ -21,7 +21,14 @@ import { cn } from '../../../utils/cn';
 import { formatTicketRelativeTime, formatTicketFullTimestamp } from '../../../utils/date-utils';
 import { holdMoveDragEffect } from '../../../utils/drag-effect';
 import { getReadableTextColor } from '../../../utils/ods-color-utils';
-import { LaptopIcon, Flag02Icon, MessagesIcon, UserCheckIcon } from '../../icons-v2-generated';
+import {
+  ClockIcon,
+  DotsLoaderIcon,
+  LaptopIcon,
+  Flag02Icon,
+  MessagesIcon,
+  UserCheckIcon,
+} from '../../icons-v2-generated';
 import { DeletedUserAvatar } from '../../ui/deleted-user-avatar';
 import { SquareAvatar } from '../../ui/square-avatar';
 import { Tag } from '../../ui/tag';
@@ -30,7 +37,7 @@ import { BoardTicketApproval } from './board-ticket-approval';
 import { useBoardLift, useDropAim } from './drop-aim';
 import { DROP_LINE_ATTRIBUTE } from './lane-geometry';
 import { useIsLanding } from './pending-move';
-import type { BoardPriority, BoardTicket } from './types';
+import type { BoardPriority, BoardTicket, BoardTicketActivityKind } from './types';
 import { TICKET_ID_ATTRIBUTE } from './use-lane-scroll-anchor';
 
 const PRIORITY_COLOR_CLASS: Record<BoardPriority, string> = {
@@ -50,6 +57,13 @@ export const DRAG_PREVIEW_OPACITY = 0.9;
 const MAX_VISIBLE_TAGS = 2;
 const MAX_VISIBLE_ASSIGNEES = 3;
 
+const ACTIVITY_DEFAULT_LABEL: Record<BoardTicketActivityKind, string> = {
+  'ai-working': 'AI assistant is working',
+  'user-typing': 'User typing',
+  'waiting-external': 'Waiting for client response',
+  stale: 'No activity',
+};
+
 /** Shared card shell (border / padding / bg). Same footprint for the draggable
  *  board card and the static {@link TicketCardView}. */
 const TICKET_CARD_SHELL =
@@ -158,6 +172,21 @@ export function TicketCardBody({ ticket, columnColor, renderAssignSlot, onApprov
           <span className="truncate">Escalated by User</span>
         </div>
       )}
+      {ticket.activity && (
+        <div
+          className={cn(
+            'flex items-center gap-[var(--spacing-system-xxs)] text-h6',
+            ticket.activity.kind === 'stale' ? 'text-ods-open-yellow' : 'text-ods-text-secondary',
+          )}
+        >
+          {ticket.activity.kind === 'stale' ? (
+            <ClockIcon className="size-4 shrink-0" />
+          ) : (
+            <DotsLoaderIcon className="size-4 shrink-0" />
+          )}
+          <span className="truncate">{ticket.activity.label ?? ACTIVITY_DEFAULT_LABEL[ticket.activity.kind]}</span>
+        </div>
+      )}
       {showNewMessage && (
         <Tag
           label="New Message"
diff --git a/openframe-frontend-core/src/components/features/board/types.ts b/openframe-frontend-core/src/components/features/board/types.ts
index add87df1e..fe9509e64 100644
--- a/openframe-frontend-core/src/components/features/board/types.ts
+++ b/openframe-frontend-core/src/components/features/board/types.ts
@@ -22,6 +22,24 @@ export interface BoardTicketAssignee {
   deleted?: boolean;
 }
 
+/**
+ * Live-activity footer indicator on a board card. Indicators are mutually
+ * exclusive by design — the consumer decides which single one a ticket shows
+ * (staleness has the lowest priority and must be suppressed when any other
+ * signal — new message, approval, escalation — is present).
+ */
+export type BoardTicketActivityKind = 'ai-working' | 'user-typing' | 'waiting-external' | 'stale';
+
+export interface BoardTicketActivity {
+  kind: BoardTicketActivityKind;
+  /**
+   * Overrides the built-in label for the kind. Required in practice for
+   * 'stale', whose label carries the computed duration ("No activity for
+   * 2 hours") that only the consumer can know — and tick over time.
+   */
+  label?: string;
+}
+
 export interface BoardTicket {
   id: string;
   title: string;
@@ -43,6 +61,8 @@ export interface BoardTicket {
    * technician should pick it up.
    */
   escalatedByUser?: boolean;
+  /** Single live-activity indicator rendered as the card's footer row. */
+  activity?: BoardTicketActivity;
 }
 
 export interface BoardColumnDef {
diff --git a/openframe-frontend-core/src/stories/TicketCard.stories.tsx b/openframe-frontend-core/src/stories/TicketCard.stories.tsx
index 6fee88943..5cffcbccb 100644
--- a/openframe-frontend-core/src/stories/TicketCard.stories.tsx
+++ b/openframe-frontend-core/src/stories/TicketCard.stories.tsx
@@ -1,6 +1,11 @@
 import type { Meta, StoryObj } from '@storybook/nextjs-vite';
 import type { PendingToolCallData } from '../components/chat/types';
-import { TicketCard, type TicketCardProps, type BoardTicket } from '../components/features/board';
+import {
+  TicketCard,
+  type TicketCardProps,
+  type BoardTicket,
+  type BoardTicketActivityKind,
+} from '../components/features/board';
 
 // =============================================================================
 // Harness — the card registers its own drag behaviour against the DOM and needs
@@ -149,6 +154,40 @@ export const EscalatedByUser: Story = {
   },
 };
 
+/**
+ * The `activity` footer row, one card per kind. The three live kinds (animated
+ * dots loader + grey text) fall back to their built-in labels; `stale` (clock +
+ * amber text) carries a consumer-computed duration label, since only the
+ * consumer knows the ticket's idle time — and keeps it ticking.
+ */
+export const ActivityIndicators: Story = {
+  render: () => {
+    const activities: { kind: BoardTicketActivityKind; label?: string }[] = [
+      { kind: 'ai-working' },
+      { kind: 'user-typing' },
+      { kind: 'waiting-external' },
+      { kind: 'stale', label: 'No activity for 2 hours' },
+    ];
+    return (
+      <div className="flex w-[320px] flex-col gap-[var(--spacing-system-sf)] rounded-lg bg-ods-card p-[var(--spacing-system-sf)]">
+        {activities.map(activity => (
+          <TicketCard
+            key={activity.kind}
+            columnId="ACTIVE"
+            ticket={{
+              ...BASE_TICKET,
+              id: `ticket-activity-${activity.kind}`,
+              priority: undefined,
+              tags: undefined,
+              activity,
+            }}
+          />
+        ))}
+      </div>
+    );
+  },
+};
+
 /**
  * Pending CLIENT approval — collapsed grey "Pending client approval" row with a
  * loader glyph. Expand it to reach the shared approve/reject affordance.