bug: DELETEing the current run only marks it as not current without deleting it

[SyntaxColoring]

Overview

DELETEing a run over HTTP seems to only actually delete it if it isn't the current run. If it is the current run, the DELETE merely marks it as not current, without actually deleting it.

Steps to reproduce

1. POST a run over HTTP with POST /runs {"data": {}}.
2. GET the run with GET /runs/{id} and see that it's "current": true.
3. DELETE the run with DELETE /runs/{id}. You'll get an empty {} response back with an HTTP 200 code.
4. GET the run again. It will still be there, but now it will be "current": false.
   • Expected: This should be a 404 error.
5. DELETE the run a second time. You'll get the same empty {} response with an HTTP 200 code.
6. GET the run again. Now it will be a 404 error, as expected.