From a304e716bf50ebb41eaa4bb065978b8e6ba8b09f Mon Sep 17 00:00:00 2001
From: kshitijk4poor <82637225+kshitijk4poor@users.noreply.github.com>
Date: Sat, 3 Oct 2026 15:25:58 +0530
Subject: [PATCH] refactor(compaction): append fitting input_text parts without
 copying

BN01 quality finding (Low): _truncate_input_text_parts copied each
fully-fitting part with {**part} although it never mutates it. The
fully-fitting item path already appends the original item uncopied,
and the clipped boundary part is still a new dict. No caller mutates
the returned parts (the result is only placed into the retained
message), so the copy was dead work.
---
 agent/native_compaction.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/agent/native_compaction.py b/agent/native_compaction.py
index 364cc1ecea..09dd1cc30f 100644
--- a/agent/native_compaction.py
+++ b/agent/native_compaction.py
@@ -206,7 +206,7 @@ def _truncate_input_text_parts(content: List[Dict[str, Any]], budget: int) -> Li
             if lo:
                 head.append({**part, "text": text[:lo]})
             break
-        head.append({**part})
+        head.append(part)
         budget -= cost
     return head