Fix excessive spacing between pinned and indexed resources

- Context command ends with \n\n after 'Total: ~X tokens'
- Remove extra spacing before indexed resources header
- Now proper single line gap between sections

Author: kennvene-aws

crates/chat-cli/src/cli/chat/cli/resource.rs

@@ -70,6 +70,7 @@ impl ResourceSubcommand {
 
                         ContextSubcommand::Show { expand }.execute(os, session).await?;
 
+                        // Context command ends with \n\n, so we don't need extra spacing
                         queue!(
                             session.stderr,
                             style::SetForegroundColor(style::Color::Green),