Add gallery to README: animated GIFs and ward screenshot

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: ryan-williams

README.md

@@ -2,7 +2,11 @@
 
 Interactive 3D choropleth of Jersey City property tax payments, from 2018 to 2025.
 
-[![og-lot.png](www/public/og-lot.png)][jct.rbw.sh]
+[![Lots and blocks](www/public/og.gif)][jct.rbw.sh]
+
+| | |
+|---|---|
+| ![From the west](www/public/og-west.gif) | ![Wards](www/public/og-ward.png) |
 
 **Live**: [jct.rbw.sh]