feat: session busy indicator — daemon tracks mid-turn state (agent_start/settled), busy field on session rows + live broadcast; pulsing pip in sidebar and cards (265 web tests, daemon 95.4%)

web/src/App.test.tsx

@@ -29,6 +29,7 @@ const sessions: SessionListItem[] = [
 		repo: "g/a",
 		startedAt: 10,
 		online: true,
+				busy: false,
 		lastEventAt: null,
 	},
 	{
@@ -41,6 +42,7 @@ const sessions: SessionListItem[] = [
 		repo: "g/b",
 		startedAt: 20,
 		online: true,
+				busy: false,
 		lastEventAt: null,
 	},
 	// bare session: exercises null-name/null-repo fallbacks
@@ -54,10 +56,23 @@ const sessions: SessionListItem[] = [
 		repo: null,
 		startedAt: 30,
 		online: true,
+				busy: false,
 		lastEventAt: null,
 	},
 ];
 
+function seedApiWith(list: unknown): void {
+	mockFetchJson((url) => {
+		if (url.endsWith("/stats"))
+			return { turns: 0, inputTokens: 0, outputTokens: 0, totalCost: 0, sessionsCount: 0, onlineCount: 0 };
+		if (url.includes("/api/sessions"))
+			return url.includes("/events") ? [] : list;
+		if (url.includes("/api/gitlab/status"))
+			return { connected: false, baseUrl: "https://gl" };
+		return [];
+	});
+}
+
 function seedApi(): void {
 	mockFetchJson((url) => {
 		if (url.endsWith("/stats"))
@@ -290,3 +305,21 @@ describe("conn banner + sidebar sections", () => {
 		expect(screen.queryByText(/reconnecting/i)).toBeNull();
 	});
 });
+
+describe("busy pip", () => {
+	it("sidebar shows activity pip only for online+busy sessions", async () => {
+		seedApiWith([
+			{ id: "b1", name: "working", online: true, busy: true, startedAt: 1, lastEventAt: 2 },
+			{ id: "b2", name: "idle", online: true, busy: false, startedAt: 1, lastEventAt: 2 },
+			{ id: "b3", name: "offlinebusy", online: false, busy: true, startedAt: 1, lastEventAt: 2 },
+		]);
+		seedSettings();
+		renderApp("/");
+		await waitFor(() => expect(FakeWebSocket.instances.length).toBe(1));
+		act(() => FakeWebSocket.last().serverOpen());
+		const sidebar = screen.getByLabelText("Sessions");
+		const pips = sidebar.querySelectorAll(".busy-pip");
+		expect(pips).toHaveLength(1);
+		expect(pips[0]?.closest("a")?.getAttribute("href")).toBe("/s/b1");
+	});
+});

web/src/App.tsx

@@ -78,6 +78,9 @@ function SidebarSection({
 						style={{ display: "inline-block" }}
 					/>
 					<span className="link-label">{s.name ?? s.repo ?? s.id}</span>
+					{s.online && s.busy && (
+						<span className="busy-pip" aria-label="agent working" title="agent working" />
+					)}
 				</NavLink>
 			))}
 		</>

web/src/ChatView.test.tsx

@@ -33,6 +33,7 @@ const sessions: SessionListItem[] = [
 		repo: null,
 		startedAt: 0,
 		online: true,
+				busy: false,
 		lastEventAt: 1,
 	},
 ];

web/src/SessionsView.test.tsx

@@ -22,6 +22,7 @@ function session(p: Partial<SessionListItem>): SessionListItem {
 		repo: null,
 		startedAt: 100,
 		online: true,
+				busy: false,
 		lastEventAt: null,
 		...p,
 	};
@@ -107,6 +108,7 @@ describe("SessionsView", () => {
 					cwd: "/fallback",
 					startedAt: 100,
 					online: true,
+				busy: false,
 				}),
 			],
 		});
@@ -496,3 +498,17 @@ describe("SessionsView delete session", () => {
 		expect(screen.getByLabelText("Delete session dead")).toBeInTheDocument();
 	});
 });
+
+describe("busy indicator on cards", () => {
+	it("card shows pip when online+busy, none otherwise", () => {
+		renderView({
+			sessions: [
+				session({ id: "w", name: "working", busy: true }),
+				session({ id: "i", name: "idle", busy: false }),
+				session({ id: "o", name: "off", busy: true, online: false }),
+			],
+		});
+		const pips = document.querySelectorAll(".busy-pip");
+		expect(pips).toHaveLength(1);
+	});
+});

web/src/SessionsView.tsx

@@ -42,9 +42,16 @@ function SessionCard({
 				title={s.online ? "online" : "offline"}
 			/>
 			<span className="card-body">
-				<span className="card-title" style={{ display: "block" }}>
-					{s.name ?? s.repo ?? s.cwd}
-				</span>
+			<span className="card-title" style={{ display: "block" }}>
+				{s.name ?? s.repo ?? s.cwd}
+				{s.online && s.busy && (
+					<span
+						className="busy-pip"
+						aria-label="agent working"
+						title="agent working"
+					/>
+				)}
+			</span>
 				<span className="card-meta" style={{ display: "flex" }}>
 					{s.repo !== null && <span>{s.repo}</span>}
 					<span>{s.model}</span>

web/src/SpawnView.test.tsx

@@ -264,6 +264,7 @@ describe("SpawnView spawn+poll", () => {
 								repo: "g/proj",
 								startedAt: 1,
 								online: true,
+				busy: false,
 								lastEventAt: 1,
 							},
 						]

web/src/index.css

@@ -1429,3 +1429,20 @@ mark.hit {
 		padding: 11px 13px;
 	}
 }
+
+/* ---------- busy activity pip ---------- */
+
+.busy-pip {
+  display: inline-block;
+  width: 8px;
+  height: 8px;
+  margin-left: 7px;
+  border-radius: 50%;
+  background: var(--accent);
+  animation: busy-pulse 1.1s ease-in-out infinite;
+  vertical-align: middle;
+}
+@keyframes busy-pulse {
+  0%, 100% { transform: scale(0.55); opacity: 0.45; box-shadow: 0 0 0 0 rgba(108, 140, 255, 0.5); }
+  50% { transform: scale(1); opacity: 1; box-shadow: 0 0 0 5px rgba(108, 140, 255, 0); }
+}

web/src/protocol.ts

@@ -64,6 +64,7 @@ export interface SessionInfo {
 /** Session list row (REST `GET /api/sessions` + WS `session_list`). */
 export interface SessionListItem extends SessionInfo {
 	online: boolean;
+	busy: boolean;
 	lastEventAt: number | null;
 }
 

web/src/store.test.tsx

@@ -117,6 +117,7 @@ describe("useSessions", () => {
 				id: "s1",
 				name: "one",
 				online: true,
+				busy: false,
 			},
 		] as SessionListItem[];
 		const fetchMock = mockFetchJson((url) => {
@@ -417,6 +418,7 @@ describe("useSessions", () => {
 				id: "s9",
 				name: "x",
 				online: true,
+				busy: false,
 			} as SessionListItem,
 		];
 		await act(async () => {