v0.38.0

## What's Changed
* Improve qwen 2.1 KV cache location logic by @rattus128 in https://github.com/Comfy-Org/ComfyUI/pull/16429
* Compile Qwen Image 2.1 transformer blocks by @rattus128 in https://github.com/Comfy-Org/ComfyUI/pull/16430
* Allow model files to contain which attention should be used for each block. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16419
* JsonExtractString can now handle JSON with prefix and/or suffix. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16439
* Remove torchaudio dependency. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16457
* Cuda graphs + memory compiler on ace step 1.5 autoregressive model. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16461
* Blend H3 VAE tiles against composited neighbours by @kijai in https://github.com/Comfy-Org/ComfyUI/pull/16436
* Fast disk detection to all model loaders. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16425
* [Partner Nodes] feat(Tencent): add Hunyuan Image 3.5 text-to-image and edit nodes by @comfyui-wiki in https://github.com/Comfy-Org/ComfyUI/pull/16462
* Update workflow templates to v0.11.68 by @comfyui-wiki in https://github.com/Comfy-Org/ComfyUI/pull/16466
* TextGenerate: Add system_prompt input and separate thinking output (CORE-460) by @kijai in https://github.com/Comfy-Org/ComfyUI/pull/16442
* MiniMax-H3: Support Fun-Controlnet-Union 2.0 (CORE-462) by @kijai in https://github.com/Comfy-Org/ComfyUI/pull/16471
* Fix MiniMax-H3 VAE rms_rope crash on offloaded qk_norm_scale by @chelsealong in https://github.com/Comfy-Org/ComfyUI/pull/16485
* Port some optimizations to flux model family. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16488
* [Partner Nodes] feat(Quiver): add Arrow 2 models with reasoning effort widget by @bigcat88 in https://github.com/Comfy-Org/ComfyUI/pull/16478
* [Partner Nodes] feat(Anthropic): add Claude Opus 5.5 to the Claude node by @bigcat88 in https://github.com/Comfy-Org/ComfyUI/pull/16479
* [Partner Nodes] feat(Recraft): add Recraft V4.1 Flash to the V4 text-to-image node by @bigcat88 in https://github.com/Comfy-Org/ComfyUI/pull/16501
* Update workflow templates to v0.11.69 by @comfyui-wiki in https://github.com/Comfy-Org/ComfyUI/pull/16503
* Fix ImageUpscaleWithModel crashing on RGBA images by @chelsealong in https://github.com/Comfy-Org/ComfyUI/pull/16500
* Take the SQLite write lock up front for asset scan and output-registration writes by @synap5e in https://github.com/Comfy-Org/ComfyUI/pull/16480
* Move file reads out of the remaining asset write transactions by @synap5e in https://github.com/Comfy-Org/ComfyUI/pull/16486
* feat: ming-image support by @kijai in https://github.com/Comfy-Org/ComfyUI/pull/16482
* Fix saving/loading ming image model breaking detection. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16514
* Lower memory usage and .comfy_attention support for lumina family models. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16515
* [Partner Nodes] feat(OpenAI): add GPT-6 Sol and Luna models by @bigcat88 in https://github.com/Comfy-Org/ComfyUI/pull/16520
* [Partner Nodes] feat(ByteDance): add Seedream 5.0 Flash by @bigcat88 in https://github.com/Comfy-Org/ComfyUI/pull/16522
* fix(assets): harden the asset catalogue's failure paths by @synap5e in https://github.com/Comfy-Org/ComfyUI/pull/16393
* Add missing RDNA2 arches to list. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16537
* feat(npu): support async weight offload streams by @Big2Wheel in https://github.com/Comfy-Org/ComfyUI/pull/16057
* Small fix: skip unnecessary work. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16540
* Fix Qwen VL image preprocessing crash on 4-channel (RGBA) input by @chelsealong in https://github.com/Comfy-Org/ComfyUI/pull/16548
* [Partner Nodes] feat(ByteDance): add Seedance 2.5 Draft mode by @bigcat88 in https://github.com/Comfy-Org/ComfyUI/pull/16529
* Update workflow templates to v0.11.70 by @comfyui-wiki in https://github.com/Comfy-Org/ComfyUI/pull/16557
* Add HDR LogC3 and ACEScct to Convert Color Space node. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16541
* Fix HDR output issue with negative values in Convert Image Color Space. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16565
* Update sheetsage2 abc creation from upstream yue code. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16569
* perf(assets): replace pathlib prefix checks in the asset scan by @synap5e in https://github.com/Comfy-Org/ComfyUI/pull/16543
* Mention some ComfyUI optimization details in README. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16576
* Support tiny VAE for Qwen-Image 2.1 by @kijai in https://github.com/Comfy-Org/ComfyUI/pull/16552
* feat: Support ID-V2V Wan 2.1/VACE based model (CORE-426) by @kijai in https://github.com/Comfy-Org/ComfyUI/pull/15139
* Fix potential regression with previous PR. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16596
* [Partner Nodes] chore(Sora): remove deprecated Sora nodes by @bigcat88 in https://github.com/Comfy-Org/ComfyUI/pull/16609
* Clamp Qwen Image 2.1 fp16 activations in place by @dcbert in https://github.com/Comfy-Org/ComfyUI/pull/16608
* Add comfy_attention and AttentionTensorContainer to a few models. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16595
* Speedup Yue2 AR by @rattus128 in https://github.com/Comfy-Org/ComfyUI/pull/16626
* Searching "kitchen" now returns the attention node. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16632
* Support Qwen-Image 2.1 union fun controlnet by @kijai in https://github.com/Comfy-Org/ComfyUI/pull/16519
* Update comfy-kitchen package version to 0.2.36 by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16635
* Optimize Seedvr2 by @kijai in https://github.com/Comfy-Org/ComfyUI/pull/16530
* Support w6a8 quantization format by @kijai in https://github.com/Comfy-Org/ComfyUI/pull/16483
* Fixes for last PR. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16637
* fix(db): wait briefly for the database lock at startup by @synap5e in https://github.com/Comfy-Org/ComfyUI/pull/16602
* fix(assets): Start without the assets packages; --enable-assets reports what is missing and runs with assets disabled by @synap5e in https://github.com/Comfy-Org/ComfyUI/pull/16580
* perf(assets): keep the UI responsive during asset scans and rescan output by listing folders by @synap5e in https://github.com/Comfy-Org/ComfyUI/pull/16546
* Speedup generation on qwen3.5/3.8 with long contexts. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16638
* Avoid unnecessary write. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16639
* Update codeowners. by @comfyanonymous in https://github.com/Comfy-Org/ComfyUI/pull/16655

## New Contributors
* @Big2Wheel made their first contribution in https://github.com/Comfy-Org/ComfyUI/pull/16057
* @dcbert made their first contribution in https://github.com/Comfy-Org/ComfyUI/pull/16608

**Full Changelog**: https://github.com/Comfy-Org/ComfyUI/compare/v0.37.0...v0.38.0