* Regression tests for a body the PDU's own data_coding cannot carry
* Refuse a body the PDU's own data_coding cannot carry, in the codec both send paths build through
* Record the codec's body refusal, and drop two todo entries it and the interop run close
* Regression tests for the aliased body TLV and the data_coding short_message settles
* Find the body TLV by tag id, leave data_coding to the field that will be read, and correct the record
* Record the two architecture findings this change does not close
* Regression tests for a duplicated body tag and a short_message the wire never carries
* Resolve every body TLV against the field that will be read, and move TLV writing to its table
* Regression tests for a body only the TLV carries and an empty short_message
* Let only octets the command writes settle the alphabet, and stop shadowing the TLV table
lilleman