Improve chat rendering and generation summaries

src/schema.rs

@@ -20,6 +20,10 @@ diesel::table! {
         system -> Bool,
         compaction -> Bool,
         compaction_tail_start -> Nullable<Integer>,
+        generation_duration_ms -> Nullable<Integer>,
+        input_tokens -> Nullable<Integer>,
+        cached_tokens -> Nullable<Integer>,
+        output_tokens -> Nullable<Integer>,
     }
 }