fix(routing): preserve explicit cron account and bound message defaults

Co-authored-by: lbo728 <72309817+lbo728@users.noreply.github.com>
Co-authored-by: stakeswky <64798754+stakeswky@users.noreply.github.com>

src/infra/outbound/message-action-runner.test.ts

@@ -1021,4 +1021,32 @@ describe("runMessageAction accountId defaults", () => {
     expect(ctx.accountId).toBe("ops");
     expect(ctx.params.accountId).toBe("ops");
   });
+
+  it("falls back to the agent's bound account when accountId is omitted", async () => {
+    await runMessageAction({
+      cfg: {
+        bindings: [{ agentId: "agent-b", match: { channel: "discord", accountId: "account-b" } }],
+      } as OpenClawConfig,
+      action: "send",
+      params: {
+        channel: "discord",
+        target: "channel:123",
+        message: "hi",
+      },
+      agentId: "agent-b",
+    });
+
+    expect(handleAction).toHaveBeenCalled();
+    const ctx = (handleAction.mock.calls as unknown as Array<[unknown]>)[0]?.[0] as
+      | {
+          accountId?: string | null;
+          params: Record<string, unknown>;
+        }
+      | undefined;
+    if (!ctx) {
+      throw new Error("expected action context");
+    }
+    expect(ctx.accountId).toBe("account-b");
+    expect(ctx.params.accountId).toBe("account-b");
+  });
 });