fix ordering

src/ai.rs

@@ -263,7 +263,12 @@ impl EmbedStore {
             .flatten()
             .collect::<Vec<SearchResult>>();
 
-        flat.sort_by(|a, b| b.chunks.len().cmp(&a.chunks.len()));
+        flat.sort_by(|a, b| {
+            b.similarity()
+                .partial_cmp(&a.similarity())
+                .unwrap_or(std::cmp::Ordering::Equal)
+                .then(b.chunks.len().cmp(&a.chunks.len()))
+        });
         flat
     }