fix(feishu): preserve sender-scoped ACP rebinding

extensions/feishu/src/bot.ts

@@ -1262,6 +1262,9 @@ export async function handleFeishuMessage(params: {
       configuredBinding = configuredRoute.configuredBinding;
       route = configuredRoute.route;
 
+      // Bound Feishu conversations intentionally require an exact live conversation-id match.
+      // Sender-scoped topic sessions therefore bind on `chat:topic:root:sender:user`, while
+      // configured ACP bindings may still inherit the shared `chat:topic:root` topic session.
       const threadBinding = getSessionBindingService().resolveByConversation({
         channel: "feishu",
         accountId: account.accountId,

src/acp/persistent-bindings.resolve.ts

@@ -247,6 +247,9 @@ export function resolveConfiguredAcpBindingSpecBySessionKey(params: {
         channel: "feishu",
         accountId: parsedSessionKey.accountId,
         conversationId: targetParsed.canonicalConversationId,
+        // Session-key recovery deliberately collapses sender-scoped topic bindings onto the
+        // canonical topic conversation id so `group_topic` and `group_topic_sender` reuse
+        // the same configured ACP session identity.
         parentConversationId:
           targetParsed.scope === "group_topic" || targetParsed.scope === "group_topic_sender"
             ? targetParsed.chatId

src/auto-reply/reply/commands-acp/context.test.ts

@@ -174,6 +174,29 @@ describe("commands-acp context", () => {
     );
   });
 
+  it("preserves sender-scoped Feishu topic ids after ACP route takeover via ParentSessionKey", () => {
+    const params = buildCommandTestParams("/acp status", baseCfg, {
+      Provider: "feishu",
+      Surface: "feishu",
+      OriginatingChannel: "feishu",
+      OriginatingTo: "chat:oc_group_chat",
+      MessageThreadId: "om_topic_root",
+      SenderId: "ou_topic_user",
+      AccountId: "work",
+      ParentSessionKey:
+        "agent:main:feishu:group:oc_group_chat:topic:om_topic_root:sender:ou_topic_user",
+    });
+    params.sessionKey = "agent:codex:acp:binding:feishu:work:abc123";
+
+    expect(resolveAcpCommandBindingContext(params)).toEqual({
+      channel: "feishu",
+      accountId: "work",
+      threadId: "om_topic_root",
+      conversationId: "oc_group_chat:topic:om_topic_root:sender:ou_topic_user",
+      parentConversationId: "oc_group_chat",
+    });
+  });
+
   it("resolves Feishu DM conversation ids from user targets", () => {
     const params = buildCommandTestParams("/acp status", baseCfg, {
       Provider: "feishu",

src/auto-reply/reply/commands-acp/context.ts

@@ -45,15 +45,16 @@ function resolveFeishuSenderScopedConversationId(params: {
   threadId?: string;
   senderId?: string;
   sessionKey?: string;
+  parentSessionKey?: string;
 }): string | undefined {
   const parentConversationId = normalizeConversationText(params.parentConversationId);
   const threadId = normalizeConversationText(params.threadId);
   const senderId = normalizeConversationText(params.senderId);
-  const scopedRest = parseAgentSessionKey(params.sessionKey)?.rest?.trim().toLowerCase() ?? "";
   const expectedScopePrefix = `feishu:group:${parentConversationId?.toLowerCase()}:topic:${threadId?.toLowerCase()}:sender:`;
-  const isSenderScopedSession = Boolean(
-    scopedRest && expectedScopePrefix && scopedRest.startsWith(expectedScopePrefix),
-  );
+  const isSenderScopedSession = [params.sessionKey, params.parentSessionKey].some((candidate) => {
+    const scopedRest = parseAgentSessionKey(candidate)?.rest?.trim().toLowerCase() ?? "";
+    return Boolean(scopedRest && expectedScopePrefix && scopedRest.startsWith(expectedScopePrefix));
+  });
   if (!parentConversationId || !threadId || !senderId || !isSenderScopedSession) {
     return undefined;
   }
@@ -123,6 +124,7 @@ export function resolveAcpCommandConversationId(params: HandleCommandsParams): s
         threadId,
         senderId: params.command.senderId ?? params.ctx.SenderId,
         sessionKey: params.sessionKey,
+        parentSessionKey: params.ctx.ParentSessionKey,
       });
       return (
         senderScopedConversationId ??

src/config/zod-schema.agents.ts

@@ -90,7 +90,7 @@ const AcpBindingSchema = z
     }
     if (
       channel === "feishu" &&
-      !/^(ou_[^:]+|on_[^:]+|[^:]+:topic:[^:]+(?::sender:[^:]+)?)$/.test(peerId)
+      !/^(ou_[^:]+|on_[^:]+|oc_[^:]+:topic:[^:]+(?::sender:[^:]+)?)$/.test(peerId)
     ) {
       ctx.addIssue({
         code: z.ZodIssueCode.custom,