Fix: Add ComfyUI API compatibility shims for Blend and SDXL encoders

[Alaric07]

This update adds compatibility patches for the latest ComfyUI API changes that caused breakage in the SeargeSDXL workflow.

Summary

ComfyUI recently refactored internal APIs for both post-processing nodes and SDXL text encoders, which led to the following runtime errors:

'Blend' object has no attribute 'blend_images'

'SeargeStageClipConditioning' object has no attribute 'encode_base'

index 1 is out of bounds for dimension 0 with size 1

This patch introduces lightweight shims to restore functionality while remaining backward-compatible.

Changes

Added a Blend compatibility shim to dynamically attach a blend_images() method when missing.

Falls back gracefully to blend(), execute(), or a manual torch-based blend.

Added SDXL encoder compatibility shims for encode_base() and encode_ref() ensuring proper operation with the new ComfyUI text-encoder API (mid-2025+).

Preserved legacy tuple [0] returns to maintain workflow compatibility with older node logic.

Tested Environment

OS: Fedora Linux 43 (Wayland)

Desktop: KDE Plasma 6.5.1 / Frameworks 6.19.0 / Qt 6.10.0

Kernel: 6.17.7-300.fc43.x86_64

CPU: Intel® Core™ Ultra 7-265KF (20 threads)

GPU: NVIDIA GeForce RTX 4090 (ASUS)

RAM: 64 GiB

Verification

Tested successfully with:

ComfyUI master (Nov 2025 build)

JuggernautXL SDXL model (with baked-in VAE)

SeargeSDXL full workflow, including refiner and upscale paths

Notes

This patch is backward-compatible and intended as a temporary fix until upstream adjustments are merged into SeargeSDXL.

Acknowledgment

Submitted by Eric Weiss (Alaric07) — tested on Fedora 43 Workstation.

[Alaric07]

Hi everyone,
I noticed that recent builds of ComfyUI caused errors in the SeargeSDXL workflow (specifically in the CLIPTextEncodeSDXL .encode() method and the Blend.blend_images() method).
This PR adds lightweight compatibility shims so existing pipelines continue to function while upstream updates are still in progress.
I tested this locally on Fedora 43 with an RTX 4090 and JuggernautXL (baked-in VAE) and the workflow now runs end-to-end without error.
Looking forward to your review — happy to make any tweaks if useful.
Thanks for maintaining this great pack!
— Eric Weiss (Alaric07)