I often have an editor buffer open for a long period of time, or I leave the terminal and come back and it's been open for a while.

Most editors display the name of the open file. Currently, if I do dstask edit 1, the name is mostly random:

/tmp/dstask.12345231.tmp

I think encoding a fixed-width portion of the ID and Summary could be useful. So the above, for ID 1 and a Summary "Email Bobby about birthday party" could be edited with a temp file like

/tmp/dstask.1_email_bobby_ab.12345231.tmp