docs: add dashboard screenshot to README

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: adriandmitroca

README.md

@@ -2,6 +2,8 @@
 
 **Turn your backlog into pull requests — automatically.**
 
+![Relay Dashboard](screenshot.png)
+
 Relay connects to your existing project management tools, picks up tasks, and uses Claude Code to implement them in isolated git worktrees. You review the diff, click Accept, and a PR appears. That's it.
 
 No API keys to manage. No per-token billing. No workflow files to write. Relay runs locally on your machine using your Claude Code subscription (Pro, Max, or Team) and plugs directly into the tools you already use.