By: Michael Lynch <git@mtlynch.io>
Move media path mapping into writers Make MediaWriter responsible for mapping filenames to backend-relative paths so callers no longer pass a separate PathFor function alongside the writer. This keeps S3 subfolder handling encapsulated in the S3 writer and lets upload/import processing use Writer.PathFor consistently.
| Time to Start | Worker time | Duration | Time to finish | |
| Config | 2s | 9s | 9s | 11s |
| Eval | 9s | 25s | 25s | 35s |
| Build | 15s | 6m08s | 1m25s | 1m40s |
| Suite | 2s | 6m43s | 1m38s | 1m40s |