Upstream bug in `transformers` breaks use of `AutoModelForMaskGeneration` class to load SAM models
Simple fix - directly load the model with `SamModel` class instead.
See upstream issue https://github.com/huggingface/transformers/issues/38228
For example:
```py
my_field: Literal["foo", "bar"] | None = InputField(default=None)
```
Previously, this would cause a field parsing error and prevent the app from loading.
Two fixes:
- This type annotation and resultant schema are now parsed correctly
- Error handling added to template building logic to prevent the hang at startup when an error does occur
Major cleanup of RelatedModels.tsx for improved readability, structure, and maintainability.
Dried out repetitive logic
Consolidated model type sorting into reusable helpers
Added disallowed model type relationships to prevent broken connections (e.g. VAE ↔ LoRA)
- Aware this introduces a new constraint—open to feedback (see PR comment)
Some naming and types may still need refinement; happy to revisit
Adds full support for managing model-to-model relationships in the UI and backend.
Introduces RelatedModels subpanel for linking and unlinking models in model management.
- Adds REST API routes for adding, removing, and retrieving model relationships.
- New database migration: creates model_relationships table for bidirectional links.
- New service layer (model_relationships) for relationship management.
- Updated frontend: Related models float to top of LoRA/Main grouped model comboboxes for quick access.
- Added 'Show Only Related' toggle badge to MainModelPicker filter bar
**Amended commit to remove changes to ParamMainModelSelect.tsx and MainModelPicker.tsx to avoid conflict with upstream deletion/ rewrite**
