Display memory scores in status column

Move score display from name (via label()) to status column for cleaner
layout. Score now appears right of tokens for all memory nodes.

Co-Authored-By: Proof of Concept <poc@bcachefs.org>

src/user/widgets.rs

@@ -6,7 +6,7 @@ use ratatui::{
     widgets::{Block, Borders},
     crossterm::event::KeyCode,
 };
-use crate::agent::context::{AstNode, Ast};
+use crate::agent::context::{AstNode, Ast, NodeBody};
 
 #[derive(Debug, Clone)]
 pub struct SectionView {
@@ -20,13 +20,22 @@ pub struct SectionView {
 
 fn node_to_view(node: &AstNode) -> SectionView {
     match node {
-        AstNode::Leaf(leaf) => SectionView {
-            name: node.label(),
-            tokens: node.tokens(),
-            content: leaf.body().text().to_string(),
-            children: Vec::new(),
-            status: String::new(),
-        },
+        AstNode::Leaf(leaf) => {
+            let (name, status) = match leaf.body() {
+                NodeBody::Memory { key, score, .. } => {
+                    let s = score.map(|v| format!("{:.2}", v)).unwrap_or_default();
+                    (format!("mem: {}", key), s)
+                }
+                _ => (node.label(), String::new()),
+            };
+            SectionView {
+                name,
+                tokens: node.tokens(),
+                content: leaf.body().text().to_string(),
+                children: Vec::new(),
+                status,
+            }
+        }
         AstNode::Branch { children, .. } => {
             let child_views: Vec<SectionView> = children.iter()
                 .map(|c| node_to_view(c))