docs: move TUI screenshot from homepage to quick start page

Author: MiniCodeMonkey

docs/guide/quick-start.md

@@ -6,6 +6,10 @@ description: Get Chief running quickly. Install via Homebrew, create a PRD, and
 
 Get Chief running in under 5 minutes.
 
+<div style="max-width: 800px; margin: 2rem auto; padding: 0 1rem;">
+  <img src="/images/tui-screenshot.png" alt="Chief TUI" style="border-radius: 8px; box-shadow: 0 4px 20px rgba(0,0,0,0.3);" />
+</div>
+
 ## Prerequisites
 
 Before you begin, make sure you have:

docs/index.md

@@ -17,7 +17,3 @@ hero:
       text: View on GitHub
       link: https://github.com/minicodemonkey/chief
 ---
-
-<div style="max-width: 800px; margin: 2rem auto; padding: 0 1rem;">
-  <img src="/images/tui-screenshot.png" alt="Chief TUI" style="border-radius: 8px; box-shadow: 0 4px 20px rgba(0,0,0,0.3);" />
-</div>