Operations handling VAE / Text Encoders

Nobody has claimed this yet.

### Edit- Most of these sub issues have been solved. Outstanding issues are at the top

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I'm making this as a broad topic for the functions related to "VAE" and "Text Encoders".

According to Illyasviel, **these are now one and the same in Forge.**

If anyone makes comments for related issues, I'll add to the OP.

I've attempted to do these things myself, but they were over my head (except the last item).

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### Sending PNGInfo to txt2img / img2img

`Module 1, Module 2, Module 3, etc` - these settings should automatically populate the **VAE/Text Encoders** multi-select menu.

Or, in Extra Parameters field that can appear below the main sliders

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### XYZ Parameters

Currently, only "VAE" can be used via XYZ.

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### ✅ Checkpoint Preferences

Original Issue
Currently no way to set default Text Encoders for checkpoints.

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### ✅ API `override_settings`

Original Issue
Ideally, a `list` of modules (VAEs and Text Encoders) should be able to be provided in the `override_settings` dict.


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### ✅ Get all VAE / Text Encoders via API

**Already done and merged** - https://github.com/lllyasviel/stable-diffusion-webui-forge/pull/1463

Screenshot


Review the outstanding sections at the top of the issue, especially PNGInfo population of the VAE/Text Encoders menu and XYZ support beyond VAE. Treat checkpoint preferences, API override_settings, and listing all modules as completed or already merged, and verify completion against the requested UI behavior.

Written by the indexing model from the issue text.