Add diffusion-single-file tag to README

Adds the diffusion-single-file tag to the YAML front matter so the repo appears in HuggingFace library search.

README.md

@@ -1,32 +1 @@
----
-license: other
-license_name: ideogram-non-commercial-model-agreement
-license_link: https://huggingface.co/ideogram-ai/ideogram-4-fp8/blob/main/LICENSE.md
-tags:
-- comfyui
----
-
-# Ideogram 4
-
-Repackaged model files for ComfyUI.
-
-Original model repository: https://huggingface.co/ideogram-ai/ideogram-4-fp8
-
-Place the files in the following folders:
-
-```
-📂 ComfyUI/
-├── 📂 models/
-│   ├── 📂 diffusion_models/
-│   │   ├── ideogram4_fp8_scaled.safetensors
-│   │   ├── ideogram4_int8_convrot.safetensors
-│   │   ├── ideogram4_nvfp4_mixed.safetensors
-│   │   ├── ideogram4_unconditional_fp8_scaled.safetensors
-│   │   ├── ideogram4_unconditional_int8_convrot.safetensors
-│   │   └── ideogram4_unconditional_nvfp4_mixed.safetensors
-│   ├── 📂 text_encoders/
-│   │   ├── qwen3vl_8b_fp8_scaled.safetensors
-│   │   └── qwen3vl_8b_nvfp4.safetensors
-│   ├── 📂 vae/
-│   │   └── flux2-vae.safetensors
-```
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