From 1234cc4c3187c732c363321b7f1b24b47128eef9 Mon Sep 17 00:00:00 2001
From: Brian Mendonca <bmendonca3@gatech.edu>
Date: Mon, 2 Mar 2026 16:41:36 -0700
Subject: [PATCH] Feishu: reply to topic roots (#29968)

* Feishu: reply to topic roots

* Changelog: note Feishu topic-root reply targeting

---------

Co-authored-by: bmendonca3 <208517100+bmendonca3@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>
---
 CHANGELOG.md                      |  1 +
 extensions/feishu/src/bot.test.ts | 38 +++++++++++++++++++++++++++++++
 extensions/feishu/src/bot.ts      |  4 ++--
 3 files changed, 41 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3734343c..fb93b2f6f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,7 @@ Docs: https://docs.openclaw.ai
 ### Fixes
 
 - Feishu/topic session routing: use `thread_id` as topic session scope fallback when `root_id` is absent, keep first-turn topic keys stable across thread creation, and force thread replies when inbound events already carry topic/thread context. (#29788) Thanks @songyaolun.
+- Feishu/topic root replies: prefer `root_id` as outbound `replyTargetMessageId` when present, and parse millisecond `message_create_time` values correctly so topic replies anchor to the root message in grouped thread flows. (#29968) Thanks @bmendonca3.
 - Feishu/DM pairing reply target: send pairing challenge replies to `chat:<chat_id>` instead of `user:<sender_open_id>` so Lark/Feishu private chats with user-id-only sender payloads receive pairing messages reliably. (#31403) Thanks @stakeswky.
 - Feishu/Lark private DM routing: treat inbound `chat_type: "private"` as direct-message context for pairing/mention-forward/reaction synthetic handling so Lark private chats behave like Feishu p2p DMs. (#31400) Thanks @stakeswky.
 - Feishu/Sender lookup permissions: suppress user-facing grant prompts for stale non-existent scope errors (`contact:contact.base:readonly`) during best-effort sender-name resolution so inbound messages continue without repeated false permission notices. (#31761)
diff --git a/extensions/feishu/src/bot.test.ts b/extensions/feishu/src/bot.test.ts
index 3be5dbf8c..6a108777d 100644
--- a/extensions/feishu/src/bot.test.ts
+++ b/extensions/feishu/src/bot.test.ts
@@ -1458,6 +1458,44 @@ describe("handleFeishuMessage command authorization", () => {
     );
   });
 
+  it("replies to the topic root when handling a message inside an existing topic", async () => {
+    mockShouldComputeCommandAuthorized.mockReturnValue(false);
+
+    const cfg: ClawdbotConfig = {
+      channels: {
+        feishu: {
+          groups: {
+            "oc-group": {
+              requireMention: false,
+              replyInThread: "enabled",
+            },
+          },
+        },
+      },
+    } as ClawdbotConfig;
+
+    const event: FeishuMessageEvent = {
+      sender: { sender_id: { open_id: "ou-topic-user" } },
+      message: {
+        message_id: "om_child_message",
+        root_id: "om_root_topic",
+        chat_id: "oc-group",
+        chat_type: "group",
+        message_type: "text",
+        content: JSON.stringify({ text: "reply inside topic" }),
+      },
+    };
+
+    await dispatchMessage({ cfg, event });
+
+    expect(mockCreateFeishuReplyDispatcher).toHaveBeenCalledWith(
+      expect.objectContaining({
+        replyToMessageId: "om_root_topic",
+        rootId: "om_root_topic",
+      }),
+    );
+  });
+
   it("forces thread replies when inbound message contains thread_id", async () => {
     mockShouldComputeCommandAuthorized.mockReturnValue(false);
 
diff --git a/extensions/feishu/src/bot.ts b/extensions/feishu/src/bot.ts
index 3c8da4bc1..924a94213 100644
--- a/extensions/feishu/src/bot.ts
+++ b/extensions/feishu/src/bot.ts
@@ -1242,13 +1242,13 @@ export async function handleFeishuMessage(params: {
     const messageCreateTimeMs = event.message.create_time
       ? parseInt(event.message.create_time, 10)
       : undefined;
-
+    const replyTargetMessageId = ctx.rootId ?? ctx.messageId;
     const { dispatcher, replyOptions, markDispatchIdle } = createFeishuReplyDispatcher({
       cfg,
       agentId: route.agentId,
       runtime: runtime as RuntimeEnv,
       chatId: ctx.chatId,
-      replyToMessageId: ctx.messageId,
+      replyToMessageId: replyTargetMessageId,
       skipReplyToInMessages: !isGroup,
       replyInThread,
       rootId: ctx.rootId,