[FEATURE REQUEST] Meeting user expectations when editing uploaded specs and source file updates.

**What is your question?**
Insomnia Designer is great tool but I don't understand how I can use it to modify existing API definition .yaml? I can import a file using Create -> Import from -> File but after that no changes are synced to the original file.
My expected scenario is the following:
1. Run Insomnia Designer and open existing API definition file.
2. I modify API definition (debug, preview etc.)
3. All changes are saved to opened file

**What is the context?**
Insomnia Designer

The issue identifies Insomnia Designer's Create → Import from → File flow and imported .yaml API definitions, but no implementation files or tests. Start by tracing how imported files are represented and whether source paths are retained. Done means edits made in Designer are reliably saved back to the opened source file.

Written by the indexing model from the issue text.