add user documentation for projects

v1.19/user/index.md

@@ -8,6 +8,7 @@ involved in running it on their machines.
 
 - [Your First Repository](first-repository)
 - [Branch and tag protection](protection)
+- [Projects / Kanban boards](project)
 - [Webhooks](webhooks)
 - Authentication
   - [LDAP, PAM, FreeIPA](authentication)

v1.19/user/project.md

@@ -0,0 +1,15 @@
+---
+layout: '~/layouts/Markdown.astro'
+title: 'Projects'
+license: 'CC-BY-SA-4.0'
+---
+
+A project is a [kanban board](https://en.wikipedia.org/wiki/Kanban_(development)) to organize issues.
+
+![screenshot of the project page](../../../../images/v1.19/user/project/project.png)
+
+# Card previews images
+
+If the card preview in the project is set to **Images and Text**, the card preview displays images found in the corresponding issue. The most recent is displayed first, up to five images.
+
+![example of card image preview](../../../../images/v1.19/user/project/project-image.png)