Release: pip diffusers (PR #13860) + public model ideogram-ai/ideogram-4-nf4; drop bundled diffusers_src

Fix bnb Params4bit.shape tuple (.numel via math.prod); unpin bitsandbytes for cu130

Pin ML stack to validated versions (bitsandbytes 0.47.0 fixes Params4bit.shape tuple)

Demo: native pipe.upsample_prompt + spaces.aoti_blocks_load (overlapped) + timing

Update requirements.txt

Add prompt upsampling (Qwen3-VL+Outlines), 3 modes, v2 checkpoint, Citrus theme: requirements.txt

Drop ./diffusers_src from requirements

Embed diffusers PR source; install locally

Initial Ideogram 4 NF4 demo