fix: honor acp projector default account

src/auto-reply/reply/dispatch-acp.test.ts

@@ -1033,6 +1033,48 @@ describe("tryDispatchAcpReply", () => {
     expect(result?.queuedFinal).toBe(true);
   });
 
+  it("honors the configured default account for ACP projector chunking when AccountId is omitted", async () => {
+    setReadyAcpResolution();
+    const cfg = createAcpTestConfig({
+      channels: {
+        discord: {
+          defaultAccount: "work",
+          accounts: {
+            work: {
+              textChunkLimit: 5,
+            },
+          },
+        },
+      },
+    });
+    managerMocks.runTurn.mockImplementation(
+      async ({ onEvent }: { onEvent: (event: unknown) => Promise<void> }) => {
+        await onEvent({ type: "text_delta", text: "abcdef", tag: "agent_message_chunk" });
+        await onEvent({ type: "done" });
+      },
+    );
+
+    const { dispatcher } = createDispatcher();
+    await runDispatch({
+      bodyForAgent: "reply",
+      cfg,
+      dispatcher,
+      ctxOverrides: {
+        Provider: "discord",
+        Surface: "discord",
+      },
+    });
+
+    expect(dispatcher.sendBlockReply).toHaveBeenNthCalledWith(
+      1,
+      expect.objectContaining({ text: "abcde" }),
+    );
+    expect(dispatcher.sendBlockReply).toHaveBeenNthCalledWith(
+      2,
+      expect.objectContaining({ text: "f" }),
+    );
+  });
+
   it("does not add text fallback when final TTS already delivered audio", async () => {
     setReadyAcpResolution();
     ttsMocks.resolveTtsConfig.mockReturnValue({ mode: "final" });

src/auto-reply/reply/dispatch-acp.ts

@@ -200,6 +200,28 @@ function hasBoundConversationForSession(params: {
   });
 }
 
+function resolveDispatchAccountId(params: {
+  cfg: OpenClawConfig;
+  channelRaw: string | undefined;
+  accountIdRaw: string | undefined;
+}): string | undefined {
+  const channel = String(params.channelRaw ?? "")
+    .trim()
+    .toLowerCase();
+  if (!channel) {
+    return params.accountIdRaw?.trim() || undefined;
+  }
+  const explicit = params.accountIdRaw?.trim();
+  if (explicit) {
+    return explicit;
+  }
+  const channels = params.cfg.channels as Record<string, { defaultAccount?: unknown } | undefined>;
+  const configuredDefaultAccountId = channels?.[channel]?.defaultAccount;
+  return typeof configuredDefaultAccountId === "string" && configuredDefaultAccountId.trim()
+    ? configuredDefaultAccountId.trim()
+    : undefined;
+}
+
 export type AcpDispatchAttemptResult = {
   queuedFinal: boolean;
   counts: Record<ReplyDispatchKind, number>;
@@ -394,12 +416,17 @@ export async function tryDispatchAcpReply(params: {
           resolveAgentIdFromSessionKey(canonicalSessionKey)
         ).trim()
       : resolveAgentIdFromSessionKey(canonicalSessionKey);
+  const effectiveDispatchAccountId = resolveDispatchAccountId({
+    cfg: params.cfg,
+    channelRaw: params.ctx.OriginatingChannel ?? params.ctx.Surface ?? params.ctx.Provider,
+    accountIdRaw: params.ctx.AccountId,
+  });
   const projector = createAcpReplyProjector({
     cfg: params.cfg,
     shouldSendToolSummaries: params.shouldSendToolSummaries,
     deliver: delivery.deliver,
     provider: params.ctx.Surface ?? params.ctx.Provider,
-    accountId: params.ctx.AccountId,
+    accountId: effectiveDispatchAccountId,
   });
 
   const acpDispatchStartedAt = Date.now();