- Offer tools for manual editing of bytes, decoding of zstd compressed level files
- Logging into appdata/temp
- Drag and drop
- Manual byte editing
- Suggestion-based editing (e.g. "I think this is the achievement flag")
- Launch Factorio button (select save file automatically)

FLOW

- Open app
- Either drag and drop
- Or press 'Open File'
- Or select from list