diff --git a/extensions/feishu/src/reply-dispatcher.test.ts b/extensions/feishu/src/reply-dispatcher.test.ts
index a4a58d7759d..190bc007a4a 100644
--- a/extensions/feishu/src/reply-dispatcher.test.ts
+++ b/extensions/feishu/src/reply-dispatcher.test.ts
@@ -364,6 +364,27 @@ describe("createFeishuReplyDispatcher streaming behavior", () => {
     expect(sendMessageFeishuMock).not.toHaveBeenCalled();
     expect(sendMarkdownCardFeishuMock).not.toHaveBeenCalled();
   });
+
+  it("skips final text already closed by idle streaming", async () => {
+    const { result, options } = createDispatcherHarness({
+      runtime: createRuntimeLogger(),
+    });
+
+    await options.onReplyStart?.();
+    result.replyOptions.onPartialReply?.({ text: "```md\nidle streamed reply\n```" });
+    await options.onIdle?.();
+    await options.deliver({ text: "```md\nidle streamed reply\n```" }, { kind: "final" });
+
+    expect(streamingInstances).toHaveLength(1);
+    expect(streamingInstances[0].close).toHaveBeenCalledTimes(1);
+    expect(streamingInstances[0].close).toHaveBeenCalledWith("```md\nidle streamed reply\n```", {
+      note: "Agent: agent",
+    });
+    expect(sendMessageFeishuMock).not.toHaveBeenCalled();
+    expect(sendMarkdownCardFeishuMock).not.toHaveBeenCalled();
+    expect(sendStructuredCardFeishuMock).not.toHaveBeenCalled();
+  });
+
   it("suppresses duplicate final text while still sending media", async () => {
     const options = setupNonStreamingAutoDispatcher();
     await options.deliver({ text: "plain final" }, { kind: "final" });
diff --git a/extensions/feishu/src/reply-dispatcher.ts b/extensions/feishu/src/reply-dispatcher.ts
index fc2e18eb07a..b4fa4f909d9 100644
--- a/extensions/feishu/src/reply-dispatcher.ts
+++ b/extensions/feishu/src/reply-dispatcher.ts
@@ -311,6 +311,12 @@ export function createFeishuReplyDispatcher(params: CreateFeishuReplyDispatcherP
       }
       const finalNote = resolveCardNote(agentId, identity, prefixContext.prefixContext);
       await streaming.close(text, { note: finalNote });
+      // Track the raw streamed text so the duplicate-final check in deliver()
+      // can skip the redundant text delivery that arrives after onIdle closes
+      // the streaming card.
+      if (streamText) {
+        deliveredFinalTexts.add(streamText);
+      }
     }
     streaming = null;
     streamingStartPromise = null;