diff --git a/web/hwlab-cloud-web/src/components/workbench/CodeAgentStatusSummary.vue b/web/hwlab-cloud-web/src/components/workbench/CodeAgentStatusSummary.vue
index ea6a95a2..ff6fa65e 100644
--- a/web/hwlab-cloud-web/src/components/workbench/CodeAgentStatusSummary.vue
+++ b/web/hwlab-cloud-web/src/components/workbench/CodeAgentStatusSummary.vue
@@ -7,39 +7,58 @@ import { firstNonEmptyString } from "@/utils";
 const props = defineProps<{ message: ChatMessage }>();
 
 const trace = computed(() => props.message.runnerTrace ?? null);
-const agentRun = computed(() => asAgentRun(trace.value?.agentRun));
-const error = computed(() => props.message.error ?? null);
+const traceRecord = computed(() => recordValue(trace.value));
+const agentRun = computed(() => asAgentRun(traceRecord.value?.agentRun ?? (props.message as Record<string, unknown>).agentRun));
+const error = computed(() => normalizeSummaryError(props.message.error ?? traceRecord.value?.error));
 const eventCount = computed(() => trace.value?.eventCount ?? trace.value?.events?.length ?? 0);
 
+const errorTitle = computed(() => firstNonEmptyString(error.value?.code, error.value?.category, "失败原因"));
+const errorMessage = computed(() => firstNonEmptyString(error.value?.message, error.value?.userMessage, error.value?.reason));
+
 const rows = computed(() => [
-  { key: "messageStatus", label: "消息状态", value: props.message.status },
-  { key: "traceStatus", label: "Trace 状态", value: firstNonEmptyString(trace.value?.status, trace.value?.traceStatus) },
-  { key: "traceId", label: "Trace", value: props.message.traceId ?? trace.value?.traceId },
-  { key: "conversationId", label: "Conversation", value: props.message.conversationId },
-  { key: "sessionId", label: "Session", value: props.message.sessionId ?? trace.value?.sessionId },
-  { key: "threadId", label: "Thread", value: props.message.threadId ?? trace.value?.threadId },
-  { key: "runnerKind", label: "Runner", value: trace.value?.runnerKind ?? agentRun.value?.adapter },
-  { key: "sessionMode", label: "Session Mode", value: trace.value?.sessionMode ?? agentRun.value?.backendProfile },
-  { key: "waitingFor", label: "Waiting For", value: trace.value?.waitingFor },
-  { key: "lastEvent", label: "Last Event", value: trace.value?.lastEventLabel },
-  { key: "eventCount", label: "Events", value: String(eventCount.value) },
-  { key: "eventsCompacted", label: "Compacted", value: trace.value?.eventsCompacted === true ? "true" : "false" },
-  { key: "fullTraceLoaded", label: "Full Trace", value: trace.value?.fullTraceLoaded === true ? "loaded" : "unverified" },
-  { key: "runId", label: "AgentRun", value: agentRun.value?.runId },
-  { key: "commandId", label: "Command", value: agentRun.value?.commandId },
-  { key: "attemptId", label: "Attempt", value: agentRun.value?.attemptId },
-  { key: "runnerId", label: "Runner ID", value: agentRun.value?.runnerId },
-  { key: "jobName", label: "Job", value: agentRun.value?.jobName },
-  { key: "namespace", label: "Namespace", value: agentRun.value?.namespace },
-  { key: "terminalStatus", label: "Terminal", value: agentRun.value?.terminalStatus },
-  { key: "errorCode", label: "Error Code", value: error.value?.code },
-  { key: "errorCategory", label: "Error Category", value: error.value?.category },
-  { key: "providerStatus", label: "Provider Status", value: error.value?.providerStatus == null ? null : String(error.value.providerStatus) }
-].map((row) => ({ ...row, value: row.value == null || row.value === "" ? "未观测" : String(row.value) })));
+  summaryRow("messageStatus", "消息状态", props.message.status),
+  summaryRow("traceStatus", "Trace 状态", firstNonEmptyString(trace.value?.status, trace.value?.traceStatus)),
+  summaryRow("traceId", "Trace", props.message.traceId ?? trace.value?.traceId),
+  summaryRow("conversationId", "Conversation", props.message.conversationId),
+  summaryRow("sessionId", "Session", props.message.sessionId ?? trace.value?.sessionId),
+  summaryRow("threadId", "Thread", props.message.threadId ?? trace.value?.threadId),
+  summaryRow("runnerKind", "Runner", trace.value?.runnerKind ?? agentRun.value?.adapter),
+  summaryRow("sessionMode", "Session Mode", trace.value?.sessionMode ?? agentRun.value?.backendProfile),
+  summaryRow("waitingFor", "Waiting For", trace.value?.waitingFor),
+  summaryRow("lastEvent", "Last Event", trace.value?.lastEventLabel),
+  summaryRow("eventCount", "Events", eventCount.value > 0 ? eventCount.value : null),
+  summaryRow("eventsCompacted", "Compacted", trace.value?.eventsCompacted === true ? "true" : null),
+  summaryRow("fullTraceLoaded", "Full Trace", trace.value?.fullTraceLoaded === true ? "loaded" : null),
+  summaryRow("runId", "AgentRun", agentRun.value?.runId),
+  summaryRow("commandId", "Command", agentRun.value?.commandId),
+  summaryRow("attemptId", "Attempt", agentRun.value?.attemptId),
+  summaryRow("runnerId", "Runner ID", agentRun.value?.runnerId),
+  summaryRow("jobName", "Job", agentRun.value?.jobName),
+  summaryRow("namespace", "Namespace", agentRun.value?.namespace),
+  summaryRow("terminalStatus", "Terminal", agentRun.value?.terminalStatus),
+  summaryRow("errorCode", "Error Code", error.value?.code),
+  summaryRow("errorCategory", "Error Category", error.value?.category),
+  summaryRow("providerStatus", "Provider Status", error.value?.providerStatus)
+].filter((row): row is { key: string; label: string; value: string } => Boolean(row)));
 
 function asAgentRun(value: unknown): AgentRunProvenance | null {
   return value && typeof value === "object" ? value as AgentRunProvenance : null;
 }
+
+function recordValue(value: unknown): Record<string, unknown> | null {
+  return value && typeof value === "object" ? value as Record<string, unknown> : null;
+}
+
+function summaryRow(key: string, label: string, value: unknown): { key: string; label: string; value: string } | null {
+  const text = value == null ? "" : String(value).trim();
+  return text ? { key, label, value: text } : null;
+}
+
+function normalizeSummaryError(value: unknown): Record<string, unknown> | null {
+  if (!value) return null;
+  if (typeof value === "string") return value.trim() ? { message: value.trim() } : null;
+  return value && typeof value === "object" ? value as Record<string, unknown> : null;
+}
 </script>
 
 <template>
@@ -48,7 +67,11 @@ function asAgentRun(value: unknown): AgentRunProvenance | null {
       <span>Code Agent 状态摘要</span>
       <StatusBadge :status="message.status" />
     </summary>
-    <dl>
+    <div v-if="error" class="code-agent-error-summary">
+      <strong>{{ errorTitle }}</strong>
+      <p v-if="errorMessage">{{ errorMessage }}</p>
+    </div>
+    <dl v-if="rows.length > 0">
       <div v-for="row in rows" :key="row.key" class="code-agent-status-row" :data-status-row="row.key">
         <dt>{{ row.label }}</dt>
         <dd>{{ row.value }}</dd>
diff --git a/web/hwlab-cloud-web/src/composables/useTraceSubscription.ts b/web/hwlab-cloud-web/src/composables/useTraceSubscription.ts
index 7f4b9853..43075a1c 100644
--- a/web/hwlab-cloud-web/src/composables/useTraceSubscription.ts
+++ b/web/hwlab-cloud-web/src/composables/useTraceSubscription.ts
@@ -16,6 +16,7 @@ export interface TraceSnapshot {
   terminalEvidence?: unknown;
   finalResponse?: unknown;
   traceSummary?: unknown;
+  error?: AgentChatResultResponse["error"];
   lastEventLabel?: string;
   waitingFor?: string;
   eventSource?: string;
@@ -62,6 +63,7 @@ export function snapshotToRunnerTrace(snapshot: TraceSnapshot): NonNullable<Chat
     finalResponse: snapshot.finalResponse,
     traceSummary: snapshot.traceSummary,
     agentRun: snapshot.agentRun,
+    error: snapshot.error,
     eventSource: snapshot.eventSource ?? "trace-api",
     runnerKind: snapshot.agentRun?.adapter,
     sessionMode: snapshot.agentRun?.backendProfile,
@@ -108,30 +110,41 @@ function traceEventIdentity(event: TraceEvent): string | null {
 
 export function mergeTraceResults(terminal: AgentChatResultResponse, trace: TraceSnapshot | null): AgentChatResultResponse {
   if (!trace) return terminal;
+  const mergedTrace: TraceSnapshot = {
+    ...trace,
+    sessionId: trace.sessionId ?? terminal.sessionId,
+    threadId: trace.threadId ?? terminal.threadId,
+    agentRun: trace.agentRun ?? terminal.agentRun,
+    terminalEvidence: trace.terminalEvidence ?? terminal.terminalEvidence,
+    finalResponse: trace.finalResponse ?? terminal.finalResponse,
+    traceSummary: trace.traceSummary ?? terminal.traceSummary,
+    error: trace.error ?? terminal.error
+  };
   const events = Array.isArray(trace.events) ? trace.events : [];
   const assistantText = bestAssistantTextCandidate([
-    finalResponseText(trace.finalResponse),
+    finalResponseText(mergedTrace.finalResponse),
     terminalAssistantTextFromTraceEvents(events),
     firstNonEmptyResultText(terminal),
     assistantTextFromTraceEvents(events)
   ]);
   return {
     ...terminal,
-    traceId: trace.traceId ?? terminal.traceId,
-    sessionId: trace.sessionId ?? terminal.sessionId,
-    threadId: trace.threadId ?? terminal.threadId,
-    agentRun: trace.agentRun ?? terminal.agentRun,
+    traceId: mergedTrace.traceId ?? terminal.traceId,
+    sessionId: mergedTrace.sessionId ?? terminal.sessionId,
+    threadId: mergedTrace.threadId ?? terminal.threadId,
+    agentRun: mergedTrace.agentRun ?? terminal.agentRun,
+    error: mergedTrace.error ?? terminal.error,
     assistantText: assistantText ?? terminal.assistantText,
-    runnerTrace: snapshotToRunnerTrace(trace),
+    runnerTrace: snapshotToRunnerTrace(mergedTrace),
     traceEvents: terminal.traceEvents ?? events,
     events,
-    eventCount: trace.eventCount ?? events.length,
-    traceStatus: trace.traceStatus ?? terminal.traceStatus,
-    retention: trace.retention ?? terminal.retention,
-    terminalEvidence: trace.terminalEvidence ?? terminal.terminalEvidence,
-    finalResponse: trace.finalResponse ?? terminal.finalResponse,
-    traceSummary: trace.traceSummary ?? terminal.traceSummary,
-    lastEventLabel: trace.lastEventLabel ?? terminal.lastEventLabel ?? events.at(-1)?.label
+    eventCount: mergedTrace.eventCount ?? events.length,
+    traceStatus: mergedTrace.traceStatus ?? terminal.traceStatus,
+    retention: mergedTrace.retention ?? terminal.retention,
+    terminalEvidence: mergedTrace.terminalEvidence ?? terminal.terminalEvidence,
+    finalResponse: mergedTrace.finalResponse ?? terminal.finalResponse,
+    traceSummary: mergedTrace.traceSummary ?? terminal.traceSummary,
+    lastEventLabel: mergedTrace.lastEventLabel ?? terminal.lastEventLabel ?? events.at(-1)?.label
   };
 }
 
@@ -227,6 +240,7 @@ function resultToTraceSnapshot(traceId: string, result: AgentChatResultResponse)
     terminalEvidence: result.terminalEvidence,
     finalResponse: result.finalResponse,
     traceSummary: result.traceSummary,
+    error: result.error,
     lastEventLabel: result.lastEventLabel ?? lastEvent?.label ?? lastEvent?.type,
     eventSource: "trace-api",
     updatedAt: new Date().toISOString()
diff --git a/web/hwlab-cloud-web/src/stores/workbench.ts b/web/hwlab-cloud-web/src/stores/workbench.ts
index 664c814d..d8865bf1 100644
--- a/web/hwlab-cloud-web/src/stores/workbench.ts
+++ b/web/hwlab-cloud-web/src/stores/workbench.ts
@@ -2,7 +2,7 @@ import { computed, ref } from "vue";
 import { defineStore } from "pinia";
 import { api } from "@/api";
 import { mergeRunnerTrace, snapshotToRunnerTrace, subscribeToTrace, type TraceSnapshot } from "@/composables/useTraceSubscription";
-import type { AgentChatResponse, AgentChatResultResponse, ApiResult, ChatMessage, ConversationRecord, LiveSurface, ProviderProfile, WorkspaceRecord } from "@/types";
+import type { AgentChatResponse, AgentChatResultResponse, AgentRunProvenance, ApiResult, ChatMessage, ConversationRecord, LiveSurface, ProviderProfile, TraceEvent, WorkspaceRecord } from "@/types";
 import { DEFAULT_WORKBENCH_PROJECT_ID, firstNonEmptyString, nextProtocolId, rememberWorkbenchProjectId, resolveInitialWorkbenchProjectId, workspaceProjectId } from "@/utils";
 import { RECENT_DRAFTS_STORAGE_KEY, activeTraceIdFromWorkspace, defaultProviderProfileOptions, normalizeRecentDrafts, providerProfileOptionsFromPayload, recordRecentDraft, resolveComposerState, sortSessionTabs, workspaceWithClearedActiveTrace, type DraftEntry, type ProviderProfileOption } from "./workbench-session";
 
@@ -55,6 +55,7 @@ export const useWorkbenchStore = defineStore("workbench", () => {
     rememberWorkbenchProjectId(workspaceProjectId(workspace.value, projectId.value));
     conversations.value = conversationsResult.ok ? conversationsResult.data?.conversations ?? [] : [];
     messages.value = messagesFromWorkspace(workspace.value);
+    void hydrateTerminalMessageDiagnostics();
     await refreshProviderOptions();
     const activeTraceId = activeTraceIdFromWorkspace(workspace.value);
     if (activeTraceId) void validateAndReattachTrace(activeTraceId);
@@ -103,6 +104,7 @@ export const useWorkbenchStore = defineStore("workbench", () => {
     if (response.ok) {
       workspace.value = response.data?.workspace ?? current;
       messages.value = messagesFromWorkspace(workspace.value);
+      void hydrateTerminalMessageDiagnostics();
       currentRequest.value = null;
     } else {
       workspace.value = previousWorkspace;
@@ -288,14 +290,37 @@ export const useWorkbenchStore = defineStore("workbench", () => {
     const text = firstNonEmptyString(result.assistantText, finalResponseText(result.finalResponse), typeof result.reply === "string" ? result.reply : result.reply?.content, result.text, result.summary) ?? "Code Agent 已完成，但没有返回可展示的 final response。";
     messages.value = messages.value.map((message) => {
       if (message.traceId !== traceId || message.role !== "agent") return message;
-      const runnerTrace = result.runnerTrace ? mergeRunnerTrace(message.runnerTrace, result.runnerTrace) : message.runnerTrace ?? null;
-      return { ...message, status: result.status === "completed" ? "completed" : statusFromResult(result.status), text, runnerTrace, updatedAt: new Date().toISOString() };
+      const runnerTrace = mergeTerminalResultTrace(message.runnerTrace, result);
+      const error = normalizeAgentError(result.error ?? runnerTrace?.error ?? message.error);
+      const agentRun = agentRunFromResult(result, runnerTrace) ?? agentRunFromMessage(message);
+      return { ...message, status: result.status === "completed" ? "completed" : statusFromResult(result.status), text, runnerTrace, error: error ?? message.error ?? null, agentRun: agentRun ?? undefined, updatedAt: new Date().toISOString() };
     });
     chatPending.value = false;
     currentRequest.value = null;
     void clearActiveTrace(traceId, "trace-terminal");
   }
 
+  async function hydrateTerminalMessageDiagnostics(): Promise<void> {
+    const targets = messages.value.filter(messageNeedsTerminalDiagnostics).slice(-6);
+    await Promise.all(targets.map(async (message) => {
+      const traceId = firstNonEmptyString(message.traceId, message.runnerTrace?.traceId);
+      if (!traceId) return;
+      const result = await api.agent.getAgentChatResult(`/v1/agent/chat/result/${encodeURIComponent(traceId)}?projectId=${encodeURIComponent(activeProjectId.value)}`, 8000, () => activityRef.value);
+      if (!result.ok || !result.data) return;
+      applyTerminalResultDiagnostics(traceId, result.data);
+    }));
+  }
+
+  function applyTerminalResultDiagnostics(traceId: string, result: AgentChatResultResponse): void {
+    messages.value = messages.value.map((message) => {
+      if (message.traceId !== traceId || message.role !== "agent") return message;
+      const runnerTrace = mergeTerminalResultTrace(message.runnerTrace, result);
+      const error = normalizeAgentError(result.error ?? runnerTrace?.error ?? message.error);
+      const agentRun = agentRunFromResult(result, runnerTrace) ?? agentRunFromMessage(message);
+      return { ...message, runnerTrace, error: error ?? message.error ?? null, agentRun: agentRun ?? undefined, updatedAt: new Date().toISOString() };
+    });
+  }
+
   function failTrace(traceId: string, message: string): void {
     markMessage(traceId, { status: "failed", text: message });
     chatPending.value = false;
@@ -364,7 +389,120 @@ function messagesFromWorkspace(workspace: WorkspaceRecord | null): ChatMessage[]
 
 function normalizeChatMessage(message: ChatMessage): ChatMessage {
   const text = firstNonEmptyString(message.text, messageText((message as Record<string, unknown>).content), messageText((message as Record<string, unknown>).message), finalResponseText((message as Record<string, unknown>).finalResponse)) ?? "";
-  return { ...message, text, id: message.id ?? nextProtocolId("msg"), title: message.title ?? (message.role === "user" ? "用户" : "Code Agent"), createdAt: message.createdAt ?? new Date().toISOString(), status: message.status ?? "source" };
+  const runnerTrace = normalizeMessageRunnerTrace(message);
+  const error = normalizeAgentError(message.error ?? runnerTrace?.error);
+  const agentRun = agentRunFromMessage(message) ?? asAgentRun(runnerTrace?.agentRun);
+  return { ...message, text, id: message.id ?? nextProtocolId("msg"), title: message.title ?? (message.role === "user" ? "用户" : "Code Agent"), createdAt: message.createdAt ?? new Date().toISOString(), status: message.status ?? "source", runnerTrace, error: error ?? message.error ?? null, agentRun: agentRun ?? undefined };
+}
+
+function mergeTerminalResultTrace(previous: ChatMessage["runnerTrace"], result: AgentChatResultResponse): NonNullable<ChatMessage["runnerTrace"]> {
+  const resultTrace = recordValue(result.runnerTrace);
+  const events = firstArray(result.events, result.traceEvents, resultTrace?.events, previous?.events);
+  const agentRun = asAgentRun(result.agentRun ?? resultTrace?.agentRun ?? previous?.agentRun);
+  return mergeRunnerTrace(previous, {
+    ...resultTrace,
+    traceId: firstNonEmptyString(result.traceId, resultTrace?.traceId, previous?.traceId) ?? undefined,
+    status: firstNonEmptyString(result.traceStatus, resultTrace?.status, result.status, previous?.status) ?? undefined,
+    sessionId: firstNonEmptyString(result.sessionId, resultTrace?.sessionId, previous?.sessionId) ?? undefined,
+    threadId: firstNonEmptyString(result.threadId, resultTrace?.threadId, previous?.threadId) ?? undefined,
+    events,
+    eventCount: firstFiniteNumber(result.eventCount, resultTrace?.eventCount, previous?.eventCount, events.length),
+    eventsCompacted: firstBoolean(resultTrace?.eventsCompacted, previous?.eventsCompacted),
+    traceStatus: firstNonEmptyString(result.traceStatus, resultTrace?.traceStatus, previous?.traceStatus) ?? undefined,
+    retention: result.retention ?? resultTrace?.retention ?? previous?.retention,
+    terminalEvidence: result.terminalEvidence ?? resultTrace?.terminalEvidence ?? previous?.terminalEvidence,
+    finalResponse: result.finalResponse ?? resultTrace?.finalResponse ?? previous?.finalResponse,
+    traceSummary: result.traceSummary ?? resultTrace?.traceSummary ?? previous?.traceSummary,
+    agentRun: agentRun ?? undefined,
+    error: normalizeAgentError(result.error ?? resultTrace?.error ?? previous?.error) ?? undefined,
+    runnerKind: firstNonEmptyString(agentRun?.adapter, resultTrace?.runnerKind, previous?.runnerKind) ?? undefined,
+    sessionMode: firstNonEmptyString(agentRun?.backendProfile, resultTrace?.sessionMode, previous?.sessionMode) ?? undefined,
+    lastEventLabel: firstNonEmptyString(result.lastEventLabel, resultTrace?.lastEventLabel, previous?.lastEventLabel, events.at(-1)?.label, events.at(-1)?.type) ?? undefined,
+    updatedAt: new Date().toISOString()
+  } as NonNullable<ChatMessage["runnerTrace"]>);
+}
+
+function normalizeMessageRunnerTrace(message: ChatMessage): ChatMessage["runnerTrace"] {
+  const trace = recordValue(message.runnerTrace);
+  const agentRun = agentRunFromMessage(message);
+  const error = normalizeAgentError(message.error ?? trace?.error);
+  if (!trace && !agentRun && !error) return message.runnerTrace ?? null;
+  return {
+    ...(trace ?? {}),
+    traceId: message.traceId ?? trace?.traceId,
+    sessionId: message.sessionId ?? trace?.sessionId,
+    threadId: message.threadId ?? trace?.threadId,
+    agentRun: agentRun ?? trace?.agentRun,
+    error: error ?? trace?.error,
+    runnerKind: agentRun?.adapter ?? trace?.runnerKind,
+    sessionMode: agentRun?.backendProfile ?? trace?.sessionMode
+  } as ChatMessage["runnerTrace"];
+}
+
+function messageNeedsTerminalDiagnostics(message: ChatMessage): boolean {
+  if (message.role !== "agent") return false;
+  if (!isTerminalMessageStatus(message.status)) return false;
+  const traceId = firstNonEmptyString(message.traceId, message.runnerTrace?.traceId);
+  if (!traceId) return false;
+  const agentRun = agentRunFromMessage(message);
+  const error = normalizeAgentError(message.error ?? message.runnerTrace?.error);
+  return !agentRun || (message.status !== "completed" && !error);
+}
+
+function agentRunFromResult(result: AgentChatResultResponse, runnerTrace: ChatMessage["runnerTrace"]): AgentRunProvenance | null {
+  return asAgentRun(result.agentRun ?? runnerTrace?.agentRun);
+}
+
+function agentRunFromMessage(message: ChatMessage): AgentRunProvenance | null {
+  return asAgentRun((message as Record<string, unknown>).agentRun ?? message.runnerTrace?.agentRun);
+}
+
+function asAgentRun(value: unknown): AgentRunProvenance | null {
+  return value && typeof value === "object" ? value as AgentRunProvenance : null;
+}
+
+function normalizeAgentError(value: unknown): ChatMessage["error"] | null {
+  if (!value) return null;
+  if (typeof value === "string") return value.trim() ? { message: value.trim() } : null;
+  if (value && typeof value === "object") {
+    const record = value as Record<string, unknown>;
+    const message = firstNonEmptyString(record.message, record.userMessage, record.reason, record.detail, record.error);
+    const code = firstNonEmptyString(record.code, record.failureKind, record.name);
+    const category = firstNonEmptyString(record.category, record.layer, record.type);
+    const providerStatus = typeof record.providerStatus === "number" ? record.providerStatus : Number.isFinite(Number(record.providerStatus)) ? Number(record.providerStatus) : undefined;
+    return { ...record, code: code ?? undefined, message: message ?? undefined, category: category ?? undefined, providerStatus };
+  }
+  return { message: String(value) };
+}
+
+function isTerminalMessageStatus(value: unknown): boolean {
+  return ["completed", "failed", "blocked", "timeout", "canceled", "cancelled", "stale", "thread-resume-failed"].includes(String(value ?? "").trim().toLowerCase().replace(/_/gu, "-"));
+}
+
+function recordValue(value: unknown): Record<string, unknown> | null {
+  return value && typeof value === "object" ? value as Record<string, unknown> : null;
+}
+
+function firstArray(...values: unknown[]): TraceEvent[] {
+  for (const value of values) {
+    if (Array.isArray(value)) return value as TraceEvent[];
+  }
+  return [];
+}
+
+function firstFiniteNumber(...values: unknown[]): number | undefined {
+  for (const value of values) {
+    const number = typeof value === "number" ? value : Number(value);
+    if (Number.isFinite(number)) return number;
+  }
+  return undefined;
+}
+
+function firstBoolean(...values: unknown[]): boolean | undefined {
+  for (const value of values) {
+    if (typeof value === "boolean") return value;
+  }
+  return undefined;
 }
 
 function finalResponseText(value: unknown): string | null {
diff --git a/web/hwlab-cloud-web/src/styles/workbench.css b/web/hwlab-cloud-web/src/styles/workbench.css
index 4e65ce7d..236745f7 100644
--- a/web/hwlab-cloud-web/src/styles/workbench.css
+++ b/web/hwlab-cloud-web/src/styles/workbench.css
@@ -1230,6 +1230,28 @@
   border-top: 1px solid #d8e1eb;
 }
 
+.code-agent-error-summary {
+  display: grid;
+  gap: 4px;
+  border-top: 1px solid #d8e1eb;
+  background: #fff7ed;
+  padding: 9px 10px;
+  color: #7c2d12;
+}
+
+.code-agent-error-summary strong {
+  font-size: 12px;
+  font-weight: 800;
+}
+
+.code-agent-error-summary p {
+  margin: 0;
+  overflow-wrap: anywhere;
+  color: #7f1d1d;
+  font-size: 12px;
+  line-height: 1.45;
+}
+
 .code-agent-status-row {
   display: grid;
   grid-template-columns: minmax(110px, 0.8fr) minmax(0, 1.2fr);