diff --git a/scripts/web-live-dom-probe.mjs b/scripts/web-live-dom-probe.mjs
index d9239d5f..1de6a7fa 100644
--- a/scripts/web-live-dom-probe.mjs
+++ b/scripts/web-live-dom-probe.mjs
@@ -111,9 +111,10 @@ export async function runProbe(args) {
     await waitForMessageCards(page, args, actions);
     await page.screenshot({ path: screenshotPath, fullPage: true });
     const dom = await collectDomEvidence(page);
+    const promptValidation = validatePromptFinalResponse(dom, args);
     result = {
       ok: true,
-      status: dom.requiredSelectors.workspace && dom.requiredSelectors.commandInput && dom.requiredSelectors.conversationList ? "pass" : "blocked",
+      status: dom.requiredSelectors.workspace && dom.requiredSelectors.commandInput && dom.requiredSelectors.conversationList && promptValidation.ok ? "pass" : "blocked",
       command: "web-live-dom-probe run",
       generatedAt: new Date().toISOString(),
       startedAt,
@@ -123,6 +124,7 @@ export async function runProbe(args) {
       browser: browser.hwlabLaunchPlan ?? null,
       actions,
       dom,
+      promptValidation,
       artifacts: { reportPath, screenshotPath },
       safety: {
         repoOwnedLauncher: true,
@@ -155,6 +157,32 @@ export async function runProbe(args) {
   return result;
 }
 
+function validatePromptFinalResponse(dom, args) {
+  if (!args.message) return { ok: true, applicable: false, reason: "no-prompt-submitted" };
+  const messages = Array.isArray(dom.messages) ? dom.messages : [];
+  const latestAgent = [...messages].reverse().find((message) => message.role === "agent");
+  const finalResponse = latestAgent?.finalResponse ?? null;
+  const markdown = finalResponse?.markdown ?? null;
+  const failures = [];
+  if (!latestAgent) failures.push("agent-message-missing");
+  if (latestAgent?.status !== "completed") failures.push("agent-not-completed");
+  if (finalResponse?.present !== true) failures.push("final-response-missing");
+  if (!finalResponse || Number(finalResponse.textChars ?? 0) <= 0) failures.push("final-response-empty");
+  if (Number(markdown?.headings ?? 0) <= 0) failures.push("markdown-heading-missing");
+  if (Number(markdown?.lists ?? 0) <= 0 || Number(markdown?.listItems ?? 0) <= 0) failures.push("markdown-list-missing");
+  if (Number(markdown?.codeBlocks ?? 0) <= 0) failures.push("markdown-code-block-missing");
+  return {
+    ok: failures.length === 0,
+    applicable: true,
+    failures,
+    finalResponse: finalResponse ? {
+      textChars: finalResponse.textChars ?? null,
+      textPreview: finalResponse.textPreview ?? null,
+      markdown: finalResponse.markdown ?? null
+    } : null
+  };
+}
+
 async function startProbe(args) {
   await mkdir(stateRoot, { recursive: true });
   const jobId = args.jobId || `web-live-dom-probe-${Date.now()}-${process.pid}`;
diff --git a/web/hwlab-cloud-web/src/state/runner-trace.test.ts b/web/hwlab-cloud-web/src/state/runner-trace.test.ts
index 4843337f..7611f26c 100644
--- a/web/hwlab-cloud-web/src/state/runner-trace.test.ts
+++ b/web/hwlab-cloud-web/src/state/runner-trace.test.ts
@@ -72,6 +72,28 @@ test("mergeTraceResults uses final assistant authority instead of later progress
   assert.doesNotMatch(merged.assistantText ?? "", / --- ## hwpod-spec 机制说明 ###/u);
 });
 
+test("mergeTraceResults prefers terminal result markdown over non-final flattened trace snapshots", () => {
+  const resultMarkdown = "ISSUE959_MARKDOWN_OK\n\n## hwpod-spec 机制说明\n\n- 第一条\n- 第二条\n\n```bash\nhwpod inspect --dry-run\n```";
+  const flattenedTrace = "I'll read context first.ISSUE959_MARKDOWN_OK ## hwpod-spec 机制说明 - 第一条 - 第二条 ```bash hwpod inspect --dry-run ```";
+  const terminal: AgentChatResultResponse = {
+    status: "completed",
+    traceId: "trc_issue959_real_payload",
+    reply: { role: "assistant", content: resultMarkdown }
+  };
+  const events: TraceEvent[] = [
+    { seq: 31, label: "agentrun:assistant:message", type: "assistant", status: "running", message: flattenedTrace },
+    { seq: 36, label: "agentrun:assistant:message", type: "assistant", status: "running", message: flattenedTrace },
+    { seq: 42, label: "agentrun:result:completed", type: "result", status: "completed", terminal: true, message: "AgentRun result is ready for HWLAB short-connection polling." }
+  ];
+  const trace: TraceSnapshot = { traceId: "trc_issue959_real_payload", status: "completed", events, eventCount: events.length, lastEventLabel: "agentrun:result:completed" };
+
+  const merged = mergeTraceResults(terminal, trace);
+
+  assert.equal(merged.assistantText, resultMarkdown);
+  assert.match(merged.assistantText ?? "", /ISSUE959_MARKDOWN_OK\n\n## hwpod-spec/u);
+  assert.doesNotMatch(merged.assistantText ?? "", /^I'll read context first/u);
+});
+
 test("mergeTraceResults prefers persisted finalResponse text for expired or compact natural traces", () => {
   const finalMarkdown = "**结论**\n\n- 自然结束和刷新后都应该显示这一段。\n- Markdown 换行必须保留。";
   const terminal: AgentChatResultResponse = {
diff --git a/web/hwlab-cloud-web/src/state/runner-trace.ts b/web/hwlab-cloud-web/src/state/runner-trace.ts
index e45f1e2e..ea5e5d4b 100644
--- a/web/hwlab-cloud-web/src/state/runner-trace.ts
+++ b/web/hwlab-cloud-web/src/state/runner-trace.ts
@@ -97,7 +97,10 @@ export function mergeTraceResults(terminal: AgentChatResultResponse, trace: Trac
   const terminalRunnerEvents = Array.isArray(terminalRunnerTrace?.events) ? terminalRunnerTrace.events : [];
   const events = longestTraceEvents(traceEvents, terminalEvents, terminalRunnerEvents);
   const mergedTrace = { ...trace, events, eventCount: trace.eventCount ?? events.length };
-  const assistantText = finalResponseText(trace.finalResponse) ?? assistantTextFromTraceEvents(events) ?? firstNonEmptyResultText(terminal);
+  const assistantText = finalResponseText(trace.finalResponse)
+    ?? terminalAssistantTextFromTraceEvents(events)
+    ?? firstNonEmptyResultText(terminal)
+    ?? assistantTextFromTraceEvents(events);
   return {
     ...terminal,
     traceId: trace.traceId ?? terminal.traceId,