Improve active run timing and turn limits

frontend/app/components/assistant-ui/thread-list.tsx

@@ -426,7 +426,12 @@ export function toReplayRepository(
 			role: message.role,
 			parts,
 			...(message.role === "assistant"
-				? { metadata: { sessionId: session.session_id ?? fallbackSessionId } }
+				? {
+						metadata: {
+							sessionId: session.session_id ?? fallbackSessionId,
+							elapsedMs: normalizeElapsedMs(message.metadata?.elapsed_ms),
+						},
+					}
 				: {}),
 		} as UIMessage;
 		const threadMessage = {
@@ -442,7 +447,10 @@ export function toReplayRepository(
 							unstable_annotations: [],
 							unstable_data: [],
 							steps: [],
-							custom: { sessionId: session.session_id ?? fallbackSessionId },
+							custom: {
+								sessionId: session.session_id ?? fallbackSessionId,
+								elapsedMs: normalizeElapsedMs(message.metadata?.elapsed_ms),
+							},
 						},
 					}
 				: { metadata: { custom: {} } }),
@@ -536,8 +544,9 @@ function buildActiveRunParts(runStatus: ClawActiveRunStatus) {
 			? "当前会话已有任务在执行，本轮正在排队。"
 			: runStatus.current_stage || "后端正在执行这个会话。";
 	const reasoningText = eventLines.length ? eventLines.join("\n") : fallback;
+	const runStartedAtMs = normalizeRunTimestampMs(runStatus.started_at);
 	return [
-		{ type: "reasoning", text: reasoningText },
+		{ type: "reasoning", text: reasoningText, runStartedAtMs },
 		...buildRunToolParts(runStatus.events ?? []),
 	];
 }
@@ -694,6 +703,11 @@ function normalizeRunTimestampMs(value: unknown) {
 	return value < 10_000_000_000 ? Math.round(value * 1000) : Math.round(value);
 }
 
+function normalizeElapsedMs(value: unknown) {
+	if (typeof value !== "number" || !Number.isFinite(value)) return undefined;
+	return Math.max(0, Math.round(value));
+}
+
 function findLastAssistantContentIndex(messages: readonly ClawStoredMessage[]) {
 	for (let index = messages.length - 1; index >= 0; index -= 1) {
 		const message = messages[index];

frontend/app/components/assistant-ui/thread.tsx

@@ -1217,11 +1217,20 @@ const ActivityChainSummary: FC<{
 }> = ({ messageId, partIndex }) => {
 	const { openItem } = useActivityPanel();
 	const startedAtRef = useRef(Date.now());
-	const [elapsedMs, setElapsedMs] = useState(0);
-	const runStartedAtMs = useAuiState((s) => {
+	const metadataRunStartedAtMs = useAuiState((s) => {
 		const value = readMetadataValue(s.message.metadata, "runStartedAtMs");
 		return typeof value === "number" && Number.isFinite(value) ? value : null;
 	});
+	const contentRunStartedAtMs = useAuiState((s) =>
+		findNumberInActivityParts(s.message.content, "runStartedAtMs"),
+	);
+	const storedElapsedMs = useAuiState((s) => {
+		const value = readMetadataValue(s.message.metadata, "elapsedMs");
+		return typeof value === "number" && Number.isFinite(value)
+			? Math.max(0, Math.round(value))
+			: null;
+	});
+	const [elapsedMs, setElapsedMs] = useState(storedElapsedMs ?? 0);
 	const label = useAuiState((s) => {
 		const message = s.message;
 		const status =
@@ -1238,14 +1247,18 @@ const ActivityChainSummary: FC<{
 	});
 
 	useEffect(() => {
-		if (!active) return;
-		const startedAt = runStartedAtMs ?? startedAtRef.current;
+		if (!active) {
+			if (storedElapsedMs !== null) setElapsedMs(storedElapsedMs);
+			return;
+		}
+		const startedAt =
+			metadataRunStartedAtMs ?? contentRunStartedAtMs ?? startedAtRef.current;
 		setElapsedMs(Math.max(0, Date.now() - startedAt));
 		const timer = window.setInterval(() => {
 			setElapsedMs(Math.max(0, Date.now() - startedAt));
 		}, 1000);
 		return () => window.clearInterval(timer);
-	}, [active, runStartedAtMs]);
+	}, [active, metadataRunStartedAtMs, contentRunStartedAtMs, storedElapsedMs]);
 
 	return (
 		<button
@@ -1272,8 +1285,20 @@ type ActivitySummaryPart = {
 	result?: unknown;
 	args?: unknown;
 	toolName?: string;
+	runStartedAtMs?: unknown;
 };
 
+function findNumberInActivityParts(
+	content: readonly ActivitySummaryPart[],
+	key: keyof ActivitySummaryPart,
+) {
+	for (const part of content) {
+		const value = part[key];
+		if (typeof value === "number" && Number.isFinite(value)) return value;
+	}
+	return null;
+}
+
 function summarizeActivityChainLabel(
 	content: readonly ActivitySummaryPart[],
 	status: string | undefined,