Vision-aware text conditioning for the Krea2/K2 model (Qwen3-VL-4B text
encoder). Forces the Krea2 descriptor template even with images, omits the
no-op VAE input (Krea2 has no reference-latent pathway), and accepts an
unbounded, auto-growing set of image+mask reference pairs. Optional per-image
mask crops the image to the masked bounding box before the vision encoder.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
