By: Tom Sydney Kerckhove <syd@cs-syd.eu>
mutationCheck: drop the inline 'config' attrset, keep only 'configFile' The 'config' attrset was an awkward halfway house: callers built a Nix-shaped value that we then rendered to YAML via builtins.toJSON. With 'configFile', the YAML is the source of truth, hand-maintained in the consuming repo as a sibling file. Move sydtest's own in-repo checks to this style via ./nix/mutation.yaml.
| Time to Start | Worker time | Duration | Time to finish | |
| Config | 0s | 3s | 3s | 3s |
| Eval | 3s | 32s | 32s | 35s |
| Build | 6s | 43s | 20s | 27s |
| Test | - | - | - | - |
| Deploy | - | - | - | - |
| Suite | 0s | 1m19s | 35s | 35s |