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https://github.com/vladmandic/automatic
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3368ce95f7
Qwen-Image: diffusers registers a no-op identity lambda for QwenImageTransformer2DModel; from_single_file silently accepted any key naming and loaded with mismatches. QWEN_SPEC sets converter=None to short-circuit the no-op. Custom transformer classes (Lens, Step1X-Edit, VIBE Sana, f-lite): runtime-registered onto diffusers, never in SINGLE_FILE_LOADABLE_CLASSES. Specs land in each arch's existing pipelines/<arch>/__init__.py. NextStep skipped: loader returns None up front.