fix: update Gradio to 5.32+ with MCP extra

- Change gradio to gradio[mcp]>=5.32.0
- Update sdk_version in README frontmatter

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -4,7 +4,7 @@ emoji: 🔍
 colorFrom: blue
 colorTo: purple
 sdk: gradio
-sdk_version: 5.0.0
+sdk_version: 5.32.0
 app_file: app.py
 pinned: false
 license: mit

requirements.txt

@@ -1,4 +1,4 @@
-gradio>=5.0.0
+gradio[mcp]>=5.32.0
 huggingface_hub>=0.25.0
 datasets>=3.0.0
 pandas>=2.0.0