fix: stop main-session UI replies inheriting channel routes

src/gateway/server-methods/chat.directive-tags.test.ts

@@ -656,6 +656,49 @@ describe("chat directive tag stripping for non-streaming final payloads", () =>
     );
   });
 
+  it("chat.send does not inherit external delivery context for UI clients on main sessions when deliver is enabled", async () => {
+    createTranscriptFixture("openclaw-chat-send-main-ui-deliver-no-route-");
+    mockState.finalText = "ok";
+    mockState.sessionEntry = {
+      deliveryContext: {
+        channel: "telegram",
+        to: "telegram:200482621",
+        accountId: "default",
+      },
+      lastChannel: "telegram",
+      lastTo: "telegram:200482621",
+      lastAccountId: "default",
+    };
+    const respond = vi.fn();
+    const context = createChatContext();
+
+    await runNonStreamingChatSend({
+      context,
+      respond,
+      idempotencyKey: "idem-main-ui-deliver-no-route",
+      client: {
+        connect: {
+          client: {
+            mode: GATEWAY_CLIENT_MODES.UI,
+            id: "openclaw-tui",
+          },
+        },
+      } as unknown,
+      sessionKey: "agent:main:main",
+      deliver: true,
+      expectBroadcast: false,
+    });
+
+    expect(mockState.lastDispatchCtx).toEqual(
+      expect.objectContaining({
+        OriginatingChannel: "webchat",
+        OriginatingTo: undefined,
+        ExplicitDeliverRoute: false,
+        AccountId: undefined,
+      }),
+    );
+  });
+
   it("chat.send inherits external delivery context for CLI clients on configured main sessions", async () => {
     createTranscriptFixture("openclaw-chat-send-config-main-cli-routes-");
     mockState.mainSessionKey = "work";

src/gateway/server-methods/chat.ts

@@ -20,6 +20,7 @@ import {
 } from "../../utils/directive-tags.js";
 import {
   INTERNAL_MESSAGE_CHANNEL,
+  isGatewayCliClient,
   isWebchatClient,
   normalizeMessageChannel,
 } from "../../utils/message-channel.js";
@@ -181,21 +182,27 @@ function resolveChatSendOriginatingRoute(params: {
     typeof sessionScopeParts[1] === "string" &&
     sessionChannelHint === routeChannelCandidate;
   const isFromWebchatClient = isWebchatClient(params.client);
+  const isFromGatewayCliClient = isGatewayCliClient(params.client);
+  const hasClientMetadata =
+    (typeof params.client?.mode === "string" && params.client.mode.trim().length > 0) ||
+    (typeof params.client?.id === "string" && params.client.id.trim().length > 0);
   const configuredMainKey = (params.mainKey ?? "main").trim().toLowerCase();
   const isConfiguredMainSessionScope =
     normalizedSessionScopeHead.length > 0 && normalizedSessionScopeHead === configuredMainKey;
+  const canInheritConfiguredMainRoute =
+    isConfiguredMainSessionScope &&
+    params.hasConnectedClient &&
+    (isFromGatewayCliClient || !hasClientMetadata);
 
-  // Webchat/Control UI clients never inherit external delivery routes, even when
-  // accessing channel-scoped sessions. External routes are only for non-webchat
-  // clients where the session key explicitly encodes an external target.
-  // Preserve the old configured-main contract: any connected non-webchat client
-  // may inherit the last external route even when client metadata is absent.
+  // Webchat clients never inherit external delivery routes. Configured-main
+  // sessions are stricter than channel-scoped sessions: only CLI callers, or
+  // legacy callers with no client metadata, may inherit the last external route.
   const canInheritDeliverableRoute = Boolean(
     !isFromWebchatClient &&
     sessionChannelHint &&
     sessionChannelHint !== INTERNAL_MESSAGE_CHANNEL &&
     ((!isChannelAgnosticSessionScope && (isChannelScopedSession || hasLegacyChannelPeerShape)) ||
-      (isConfiguredMainSessionScope && params.hasConnectedClient)),
+      canInheritConfiguredMainRoute),
   );
   const hasDeliverableRoute =
     canInheritDeliverableRoute &&