diff --git a/internal/cloud/code-agent-agentrun-adapter.ts b/internal/cloud/code-agent-agentrun-adapter.ts
index 7c958e53..b3fc5406 100644
--- a/internal/cloud/code-agent-agentrun-adapter.ts
+++ b/internal/cloud/code-agent-agentrun-adapter.ts
@@ -1447,6 +1447,14 @@ function agentRunResultToCodeAgentPayload({ base, result, traceStore, traceId, a
   const code = canceled ? "agentrun_canceled" : result?.failureKind ?? (terminalStatus === "blocked" ? "agentrun_blocked" : "agentrun_failed");
   const message = result?.failureMessage ?? result?.blocker?.message ?? (canceled ? "AgentRun command was canceled" : "AgentRun command failed");
   const attribution = agentRunFailureAttribution({ code, message, canceled });
+  const finalResponse = agentRunTerminalFailureFinalResponse({
+    base,
+    traceId,
+    now,
+    status: canceled ? "canceled" : "failed",
+    text: firstNonEmpty(message, attribution.summary, attribution.userMessage)
+  });
+  const traceSummary = agentRunTerminalFailureTraceSummary({ base, runnerTrace, finalResponse, traceId, terminalStatus: canceled ? "canceled" : terminalStatus || "failed" });
   if (appendResultEvent) {
     traceStore.append(traceId, {
       type: "result",
@@ -1477,6 +1485,8 @@ function agentRunResultToCodeAgentPayload({ base, result, traceStore, traceId, a
     toolCalls: agentRunToolCalls(result, canceled ? "canceled" : "failed"),
     skills: { status: "delegated", provider: ADAPTER_ID, count: 0, items: [], valuesPrinted: false },
     providerTrace,
+    finalResponse,
+    traceSummary,
     error: {
       code,
       layer: "agentrun",
@@ -1520,6 +1530,47 @@ function agentRunCompletedFinalResponse({ base, result, traceId, now }) {
   };
 }
 
+function agentRunTerminalFailureFinalResponse({ base, traceId, now, status, text }) {
+  const textValue = String(text ?? "").trim();
+  return {
+    text: textValue || "AgentRun command failed.",
+    textChars: (textValue || "AgentRun command failed.").length,
+    role: "assistant",
+    status,
+    traceId,
+    messageId: base.messageId ?? base.reply?.messageId ?? `msg_${traceId.slice(4)}`,
+    createdAt: base.reply?.createdAt ?? base.createdAt ?? now,
+    updatedAt: now,
+    valuesPrinted: false
+  };
+}
+
+function agentRunTerminalFailureTraceSummary({ base, runnerTrace, finalResponse, traceId, terminalStatus }) {
+  const events = Array.isArray(runnerTrace?.events) ? runnerTrace.events : [];
+  const lastSeq = Math.max(0, ...events.map((event) => Number(event?.seq ?? 0)).filter(Number.isFinite));
+  return {
+    traceId,
+    source: "agentrun-command-result",
+    sourceEventCount: Number(runnerTrace?.eventCount ?? events.length ?? 0),
+    terminalStatus,
+    finalAssistantRow: {
+      role: finalResponse.role,
+      status: finalResponse.status,
+      textChars: finalResponse.textChars,
+      textPreview: finalResponse.text.slice(0, 240),
+      messageId: finalResponse.messageId,
+      valuesPrinted: false
+    },
+    agentRun: {
+      runId: base.agentRun?.runId ?? null,
+      commandId: base.agentRun?.commandId ?? null,
+      lastSeq,
+      valuesPrinted: false
+    },
+    valuesPrinted: false
+  };
+}
+
 function agentRunCompletedTraceSummary({ base, runnerTrace, finalResponse, traceId }) {
   const events = Array.isArray(runnerTrace?.events) ? runnerTrace.events : [];
   const lastSeq = Math.max(0, ...events.map((event) => Number(event?.seq ?? 0)).filter(Number.isFinite));
diff --git a/internal/cloud/server-agent-chat.test.ts b/internal/cloud/server-agent-chat.test.ts
index 9dac02ee..3fb158a2 100644
--- a/internal/cloud/server-agent-chat.test.ts
+++ b/internal/cloud/server-agent-chat.test.ts
@@ -1071,6 +1071,10 @@ test("cloud api AgentRun adapter exposes invalid tool-call attribution in result
     assert.match(payload.error.userMessage, /无效 tool-call arguments JSON/u);
     assert.match(payload.error.userMessage, /AgentRun\/provider/u);
     assert.match(payload.error.userMessage, /不是 HWPOD/u);
+    assert.equal(payload.finalResponse.status, "failed");
+    assert.match(payload.finalResponse.text, /invalid function arguments json string/u);
+    assert.equal(payload.traceSummary.terminalStatus, "failed");
+    assert.match(payload.traceSummary.finalAssistantRow.textPreview, /invalid function arguments json string/u);
     assert.equal(payload.blocker.category, "provider_invalid_tool_call");
     assert.match(payload.blocker.summary, /invalid function arguments json string/u);
     assert.equal(payload.session.status, "failed");
diff --git a/web/hwlab-cloud-web/src/stores/workbench.ts b/web/hwlab-cloud-web/src/stores/workbench.ts
index db4f3b1b..53b79abf 100644
--- a/web/hwlab-cloud-web/src/stores/workbench.ts
+++ b/web/hwlab-cloud-web/src/stores/workbench.ts
@@ -295,10 +295,11 @@ export const useWorkbenchStore = defineStore("workbench", () => {
       if (message.traceId !== traceId || message.role !== "agent") return message;
       const runnerTrace = mergeTerminalResultTrace(message.runnerTrace, result as AgentChatResultResponse);
       const error = normalizeAgentError((result as AgentChatResultResponse).error ?? runnerTrace?.error ?? message.error);
+      const errorText = agentErrorDisplayText(error);
       const agentRun = agentRunFromResult(result as AgentChatResultResponse, runnerTrace) ?? agentRunFromMessage(message);
       const replyText = agentReplyText((result as AgentChatResultResponse).reply);
       const text = terminal
-        ? firstNonEmptyString((result as AgentChatResultResponse).assistantText, finalResponseText((result as AgentChatResultResponse).finalResponse), replyText, (result as AgentChatResultResponse).text, (result as AgentChatResultResponse).summary, message.text, "Code Agent 已完成，但没有返回可展示的 final response。") ?? message.text
+        ? firstNonEmptyString((result as AgentChatResultResponse).assistantText, finalResponseText((result as AgentChatResultResponse).finalResponse), replyText, errorText, (result as AgentChatResultResponse).text, (result as AgentChatResultResponse).summary, message.text, "Code Agent 已完成，但没有返回可展示的 final response。") ?? message.text
         : message.text;
       return { ...message, status, text, runnerTrace, error: error ?? message.error ?? null, agentRun: agentRun ?? undefined, updatedAt: new Date().toISOString() };
     });
@@ -448,8 +449,9 @@ export const useWorkbenchStore = defineStore("workbench", () => {
       const explicitStatus = normalizedStatusText(result.status);
       const status = explicitStatus ? statusFromResult(result.status) : message.status;
       const terminal = result.terminal === true || isTerminalMessageStatus(status);
-      const text = terminal ? firstNonEmptyString(result.assistantText, finalResponseText(result.finalResponse), agentReplyText(result.reply), result.text, result.summary, message.text) ?? message.text : message.text;
       const error = normalizeAgentError(result.error ?? runnerTrace?.error ?? message.error);
+      const errorText = agentErrorDisplayText(error);
+      const text = terminal ? firstNonEmptyString(result.assistantText, finalResponseText(result.finalResponse), agentReplyText(result.reply), errorText, result.text, result.summary, message.text) ?? message.text : message.text;
       const agentRun = agentRunFromResult(result, runnerTrace) ?? agentRunFromMessage(message);
       return { ...message, status, text, runnerTrace, error: error ?? message.error ?? null, agentRun: agentRun ?? undefined, updatedAt: new Date().toISOString() };
     });
@@ -525,7 +527,7 @@ export const useWorkbenchStore = defineStore("workbench", () => {
   }
 
   function completeTrace(traceId: string, result: AgentChatResultResponse): void {
-    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。";
+    const text = firstNonEmptyString(result.assistantText, finalResponseText(result.finalResponse), typeof result.reply === "string" ? result.reply : result.reply?.content, agentErrorDisplayText(result.error), result.text, result.summary) ?? "Code Agent 已完成，但没有返回可展示的 final response。";
     const terminalStatus = result.status === "completed" ? "completed" : statusFromResult(result.status);
     messages.value = messages.value.map((message) => {
       if (message.traceId !== traceId || message.role !== "agent") return message;
@@ -732,11 +734,16 @@ function selectedConversationFromWorkspace(workspace: WorkspaceRecord | null): C
 }
 
 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)) ?? "";
   const runnerTrace = normalizeMessageRunnerTrace(message);
   const error = normalizeAgentError(message.error ?? runnerTrace?.error);
   const agentRun = agentRunFromMessage(message) ?? asAgentRun(runnerTrace?.agentRun);
   const status = normalizeChatMessageStatus(message.status);
+  const baseText = firstNonEmptyString(message.text, messageText((message as Record<string, unknown>).content), messageText((message as Record<string, unknown>).message));
+  const finalText = firstNonEmptyString(finalResponseText((message as Record<string, unknown>).finalResponse), finalResponseText(runnerTrace?.finalResponse));
+  const errorText = agentErrorDisplayText(error);
+  const text = message.role === "agent" && isTerminalMessageStatus(status)
+    ? firstNonEmptyString(finalText, errorText, baseText) ?? ""
+    : firstNonEmptyString(baseText, finalText, errorText) ?? "";
   return { ...message, text, id: message.id ?? nextProtocolId("msg"), title: normalizeWorkbenchMessageTitle(message.role, message.title), createdAt: message.createdAt ?? new Date().toISOString(), status, runnerTrace, error: error ?? message.error ?? null, agentRun: agentRun ?? undefined };
 }
 
@@ -847,6 +854,12 @@ function normalizeAgentError(value: unknown): ChatMessage["error"] | null {
   return { message: String(value) };
 }
 
+function agentErrorDisplayText(value: unknown): string | null {
+  const error = normalizeAgentError(value);
+  if (!error) return null;
+  return firstNonEmptyString(error.message, typeof error.userMessage === "string" ? error.userMessage : null, error.code ? `Code Agent 请求失败：${error.code}` : null);
+}
+
 function isTerminalMessageStatus(value: unknown): boolean {
   return ["completed", "failed", "blocked", "timeout", "canceled", "cancelled", "stale", "thread-resume-failed"].includes(String(value ?? "").trim().toLowerCase().replace(/_/gu, "-"));
 }