Showcase: replace photographer-name labels with descriptive style names

Clarify: prompts come from the GitHub node (PE-T2I, applied up front); gallery captions are the literal prompts

Attribute showcase images to the ComfyUI-QwenImage-PhotoStyles node

README: showcase links open the image viewer instead of downloading

README: showcase images link to full size

README: remove showcase image 03

README: Q4_K_M file table under the showcase

README: showcase note as small text under the images

README: showcase made with Q4_K_M throughout

README: AI-generated / style homage disclaimer on showcase

README: remove showcase image 17

README: showcase captions (style)

README: showcase, Q4_K_M recommended

README: note stock loader for DiT, TE GGUF needs the patch node

Add model card, LICENSE and reproducible conversion patches