Auto-repair missing model widget paths when opening workflows from another machine

### What problem are you experiencing?

When opening workflows from another machine, model widgets often show missing models even when the same basename exists under this user’s configured model paths. Can we add an automatic repair for missing models? I have a working proof-of-concept that is a big quality of life improvement, and think others would find this helpful.

### When does this problem occur?

when opening workflows from other users, so often

### How often do you encounter this problem?

Multiple times per day

### How much does this problem affect your workflow?

Causes moderate inconvenience

### Current workarounds

wrote a custom node that exposes an extension that can be toggled on and off, and it automatically finds the path to the model if in a different folder, or a different case than in the workflow.

### Ideas for solutions (Optional)

_No response_

### Additional context

_No response_

Start by reviewing the reported custom-node proof of concept and locating the frontend workflow-opening and model-widget handling mentioned by the issue. Confirm how missing paths and basename or case differences are represented; done means workflows opened from another machine automatically resolve matching configured models without requiring the custom node.

Written by the indexing model from the issue text.