diff --git a/docs/memory/claude_inventory_validation_20260513.md b/docs/memory/claude_inventory_validation_20260513.md
index 05a13c1..b9aef7f 100644
--- a/docs/memory/claude_inventory_validation_20260513.md
+++ b/docs/memory/claude_inventory_validation_20260513.md
@@ -20,6 +20,7 @@
 - Observability route：promotion review RAG 相似查詢、PPT audit history 缺表、host health probe 寫入、MCP 24h summary 缺表等 fail-safe 區塊已改成 debug/warning log，不再完全靜默。
 - Google Drive import：`services/import_service.py` 的日期 `IN (...)` 刪除/驗證查詢已改為 SQLAlchemy bind params，不再把 DataFrame 日期值拼進 SQL 字串。
 - OpenClaw Bot：中文字型下載、趨勢同期 DB 查詢、匯入格式業績預覽解析等 best-effort 區塊已補 debug/exception/warnings，避免真正錯誤完全無跡可查。
+- `ai_call_logger._write_to_db` 不是死函數：它是 `_async_write()` 的 daemon thread target；decorator token 自動抽取與 stack caller 推斷的 best-effort 失敗也已補 debug log。
 
 ## 已驗證為已修或過期
 
@@ -79,3 +80,4 @@
 - `f9d3da5` 記錄 AutoHeal DB guardrail 驗證
 - `7e92850` 記錄 Agent Actions 動態入口驗證
 - `89c400d` 補上 OpenClaw best-effort 區塊紀錄
+- `ec5a22d` 記錄 Telegram pending action 驗證
diff --git a/services/ai_call_logger.py b/services/ai_call_logger.py
index 805475e..fe5ac04 100644
--- a/services/ai_call_logger.py
+++ b/services/ai_call_logger.py
@@ -290,7 +290,7 @@ def logged_ai_call(
                 try:
                     _auto_extract_tokens(ctx, result)
                 except Exception:
-                    pass
+                    logger.debug("[AICallLogger] auto token extraction failed", exc_info=True)
                 return result
         return wrapper
     return deco
@@ -451,5 +451,5 @@ def infer_caller_from_stack(default: str = 'unknown') -> str:
         if module and module.__name__:
             return module.__name__.split('.')[-1][:64]
     except Exception:
-        pass
+        logger.debug("[AICallLogger] infer caller from stack failed", exc_info=True)
     return default