diff --git a/tools/hwlab-cli/client.test.ts b/tools/hwlab-cli/client.test.ts
index 4eba9332..917dc865 100644
--- a/tools/hwlab-cli/client.test.ts
+++ b/tools/hwlab-cli/client.test.ts
@@ -1266,6 +1266,26 @@ test("hwlab-cli Web trace render keeps AgentRun middle assistant message", async
   assert.match(text, /助手最后一条消息/u);
 });
 
+test("hwlab-cli Web trace render keeps the full final-response body without truncating long agent summaries", async () => {
+  const longSummary = "下面是详细总结。".repeat(2000);
+  const result = await runHwlabCli(["client", "agent", "trace", "trc_final_long", "--base-url", "http://web.test", "--cookie", "hwlab_session=session-a", "--render", "web"], {
+    fetchImpl: async () => new Response(JSON.stringify({
+      status: "completed",
+      traceId: "trc_final_long",
+      events: [
+        { traceId: "trc_final_long", seq: 1, label: "request:accepted", status: "accepted", createdAt: "2026-06-01T13:00:00.000Z", promptSummary: "请给出详细总结" },
+        { traceId: "trc_final_long", seq: 2, label: "assistant:completed", type: "assistant_message", terminal: true, status: "completed", itemId: "assistant-final", createdAt: "2026-06-01T13:00:02.000Z", message: longSummary }
+      ]
+    }), { status: 200 })
+  });
+
+  assert.equal(result.exitCode, 0);
+  const terminalRow = (result.payload.body.rows as any[]).find((row) => row.terminal === true);
+  assert.ok(terminalRow, "expected a terminal row to be rendered for the final response");
+  assert.equal(terminalRow.body, longSummary);
+  assert.equal(terminalRow.body?.includes("..."), false);
+});
+
 test("hwlab-cli client agent trace auto logs in when protected trace has no local session", async () => {
   const cwd = await mkdtemp(path.join(os.tmpdir(), "hwlab-cli-client-auth-"));
   const calls: any[] = [];
diff --git a/tools/src/hwlab-cli-lib.ts b/tools/src/hwlab-cli-lib.ts
index e69c038b..ed233215 100644
--- a/tools/src/hwlab-cli-lib.ts
+++ b/tools/src/hwlab-cli-lib.ts
@@ -2325,7 +2325,10 @@ function compactTraceRenderRow(row: any) {
     tone: row?.tone ?? null,
     header: row?.header ?? null,
     bodyFormat: row?.bodyFormat ?? null,
-    body: row?.body ? preview(String(row.body), 1200) : undefined
+    terminal: row?.terminal === true ? true : undefined,
+    body: row?.body
+      ? (row?.terminal === true ? String(row.body) : preview(String(row.body), 1200))
+      : undefined
   });
 }
 
diff --git a/web/hwlab-cloud-web/app-trace.test.ts b/web/hwlab-cloud-web/app-trace.test.ts
index c0ccaf7b..65d354ab 100644
--- a/web/hwlab-cloud-web/app-trace.test.ts
+++ b/web/hwlab-cloud-web/app-trace.test.ts
@@ -407,3 +407,49 @@ function matchCount(text, pattern) {
   const flags = pattern.flags.includes("g") ? pattern.flags : `${pattern.flags}g`;
   return [...String(text ?? "").matchAll(new RegExp(pattern.source, flags))].length;
 }
+
+test("trace display rows keep full final-response text without truncating long agent summaries", () => {
+  const longSummary = "下面是详细总结。".repeat(2000);
+  const events = [
+    event(1, "request:accepted", { promptSummary: "请给出详细总结" }),
+    event(2, "assistant:completed", {
+      type: "assistant_message",
+      terminal: true,
+      status: "completed",
+      itemId: "assistant-final",
+      message: longSummary
+    })
+  ];
+  const rows = traceDisplayRows({ traceId: "trc_final_long", events }, events);
+  const terminalRow = rows.find((row) => row.terminal === true);
+  assert.ok(terminalRow, "expected a terminal row to be rendered for the final response");
+  assert.equal(terminalRow.tone, "ok");
+  assert.equal(terminalRow.body?.length, longSummary.length);
+  assert.equal(terminalRow.body?.includes("内容已截断"), false);
+});
+
+test("trace display rows still cap non-terminal streaming assistant text at the 2200 char limit", () => {
+  const streamingText = "streaming ".repeat(2000);
+  const events = [
+    event(1, "request:accepted", { promptSummary: "stream" }),
+    event(2, "assistant:item_completed", {
+      type: "assistant_message",
+      status: "completed",
+      itemId: "msg_streaming",
+      message: streamingText
+    }),
+    event(3, "assistant:completed", {
+      type: "assistant_message",
+      terminal: true,
+      status: "completed",
+      itemId: "assistant-final",
+      message: "done"
+    })
+  ];
+  const rows = traceDisplayRows({ traceId: "trc_streaming_long", events }, events);
+  const streamingRow = rows.find((row) => row.rowId === "event:2");
+  assert.ok(streamingRow, "expected a non-terminal streaming row to be rendered");
+  assert.equal(streamingRow.terminal, false);
+  assert.ok((streamingRow.body?.length ?? 0) <= 2200);
+  assert.match(streamingRow.body ?? "", /内容已截断/u);
+});
diff --git a/web/hwlab-cloud-web/app-trace.ts b/web/hwlab-cloud-web/app-trace.ts
index a956904a..83bff34f 100644
--- a/web/hwlab-cloud-web/app-trace.ts
+++ b/web/hwlab-cloud-web/app-trace.ts
@@ -743,7 +743,8 @@ function traceAssistantSummaryRow(trace, event, index = 0, textOverride = undefi
     header: terminal
       ? `${traceClock(event.createdAt)}  🤖 助手最后一条消息，轮次完成（总耗时 ${elapsed}）`
       : `${traceClock(event.createdAt)}  🤖 助手消息${index === 0 ? "（第一条）" : ""}`,
-    body: text ? compactTraceAssistantMarkdown(text, terminal ? 5000 : 2200) : null,
+    terminal: terminal === true,
+    body: text ? compactTraceAssistantMarkdown(text, terminal ? Number.POSITIVE_INFINITY : 2200) : null,
     bodyFormat: "markdown"
   };
 }