Fix demo banner text, enhance text input with multiline support, update GitHub links

app.py

@@ -596,11 +596,11 @@ with gr.Blocks(title="Z-Image Demo") as demo:
     gr.Markdown(
         """<div align="center">
 
-# Z-Image Generation Demo
+# Generative 3D Gaussian Splat
 
-[![GitHub](https://img.shields.io/badge/GitHub-Z--Image-181717?logo=github&logoColor=white)](https://github.com/Tongyi-MAI/Z-Image)
+* Generate images from text prompts using [![GitHub](https://img.shields.io/badge/GitHub-Z--Image-181717?logo=github&logoColor=white)](https://github.com/Tongyi-MAI/Z-Image) 
 
-*An Efficient Image Generation Foundation Model with Single-Stream Diffusion Transformer*
+* Create 3D Gaussian splat models from generated images using [![GitHub](https://img.shields.io/badge/GitHub-SHARP-181717?logo=github&logoColor=white)](https://github.com/apple/ml-sharp)
 
 </div>"""
     )
@@ -693,6 +693,7 @@ with gr.Blocks(title="Z-Image Demo") as demo:
                     interactive=False,
                     visible=True,
                     value="Click an image in the gallery to select it",
+                    lines=2
                 )
 
                 # Download section - always visible, empty until files are generated