fix: unify inbound sender labels

src/auto-reply/reply/inbound-sender-meta.test.ts

@@ -41,4 +41,11 @@ describe("formatInboundBodyWithSenderMeta", () => {
       "[X] hi\n[from: Alice (A1)]",
     );
   });
+
+  it("does not append when the body already includes a sender prefix", () => {
+    const ctx: MsgContext = { ChatType: "group", SenderName: "Alice", SenderId: "A1" };
+    expect(formatInboundBodyWithSenderMeta({ ctx, body: "Alice (A1): hi" })).toBe(
+      "Alice (A1): hi",
+    );
+  });
 });