By: Michael Lynch <git@mtlynch.io>
Update design doc to document how comment thread files look
| Time to Start | Worker time | Duration | Time to finish | |
| Config | 0s | 1s | 1s | 1s |
| Eval | 1s | 34s | 34s | 35s |
| Build | 3s | 2m38s | 56s | 59s |
| Test | - | - | - | - |
| Deploy | - | - | - | - |
| Suite | 0s | 3m13s | 59s | 59s |