docs: add Space configuration frontmatter to the org card

Hugging Face rejects the org card without a YAML config block, so the
Space renders a configuration error instead of the profile. This branch
is the Hub remote only; master stays free of the block so GitHub does
not render it as a stray table.

Claude-Session: https://claude.ai/code/session_01L5wZb1mDtLnrfAXkzSrTFD

README.md

@@ -1,3 +1,13 @@
+---
+title: README
+emoji: 🔬
+colorFrom: blue
+colorTo: indigo
+sdk: static
+pinned: false
+short_description: AI-powered diabetic retinopathy screening from your phone
+---
+
 <div align="center">
   <table border="1">
     <tr>