Add screenshots, readme for category summary in contact summary

README.md

@@ -36,6 +36,14 @@ Example useful things you can do with this approach:
 
 Some of the screenshots use numeric codes for the category labels, but these could be your own labels (e.g. Amazing, Loyal...) if your organisation does not want to use the codes.
 
+### Contact summary shows category
+
+![Screenshot of a sample contact summary page. There’s a block reading: Category: 0.2 with an icon and colour for that category.](./images/screenshot-contact-summary-1.jpg)
+
+This shows the latest category for this contact. If you expand the box you see the full history for that contact:
+
+![Screenshot of same page with the box opened, showing Category History and a list of two items: Wed 2 April 2025 → 0.2 and Thur, 2 Jan 2025 → 1.2. The categories have icon and colours.](./images/screenshot-contact-summary-2.jpg)
+
 ### Search » Contacts By Category
 
 ![Screenshot shows a page titled Contacts by Category. There's a selector for the Category, an Action button and a table listing contact name, type, category, email](./images/screenshot-search-contacts-by-category.png)