From 69d60e2b063b1b5b649a97320b36d8b7612b7f8a Mon Sep 17 00:00:00 2001
From: chengyongru <chengyongru.ai@gmail.com>
Date: Fri, 10 Apr 2026 18:03:36 +0800
Subject: [PATCH] fix(agent): handle UnicodeDecodeError in _read_last_entry

history.jsonl may contain non-UTF-8 bytes (e.g. from email channel
binary content), causing auto compact to fail when reading the last
entry for summary generation. Catch UnicodeDecodeError alongside
FileNotFoundError and JSONDecodeError.
---
 nanobot/agent/memory.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nanobot/agent/memory.py b/nanobot/agent/memory.py
index 26c5cd45f..e9662ff2c 100644
--- a/nanobot/agent/memory.py
+++ b/nanobot/agent/memory.py
@@ -290,7 +290,7 @@ class MemoryStore:
                 if not lines:
                     return None
                 return json.loads(lines[-1])
-        except (FileNotFoundError, json.JSONDecodeError):
+        except (FileNotFoundError, json.JSONDecodeError, UnicodeDecodeError):
             return None
 
     def _write_entries(self, entries: list[dict[str, Any]]) -> None: