Passkey write 성공 시 에코 응답 제거, result=0x0000으로 응답

- passkey write 응답 rpz: [tag 4B] [result 2B] [crc 2B]

src/command/handlers/cmd_info.c

@@ -172,7 +172,6 @@ int cmd_mpz(const uint8_t *data, uint8_t data_len)
         return 1;
     }
 
-
     // NVS 저장이 모두 성공한 뒤 RAM 값 확정
     char new_passkey[PASSKEY_BUF_SIZE];
     memset(new_passkey, 0, sizeof(new_passkey));
@@ -185,11 +184,10 @@ int cmd_mpz(const uint8_t *data, uint8_t data_len)
         return 1;
     }
 
-
     memset(m_static_passkey, 0, sizeof(m_static_passkey));
     memcpy(m_static_passkey, new_passkey, PASSKEY_LENGTH);
 
-    cmd_send_response_ascii("rpz:", m_static_passkey, PASSKEY_LENGTH);
+    cmd_send_response_u16("rpz:", 0x0000);
     return 1;
 }