diff --git a/src/pyflowx/cli/emlmanager.py b/src/pyflowx/cli/emlmanager.py
index 0c60cdf..f5d52d4 100644
--- a/src/pyflowx/cli/emlmanager.py
+++ b/src/pyflowx/cli/emlmanager.py
@@ -240,7 +240,7 @@ def _parse_email_date(date_str: str) -> str:
     try:
         dt = parsedate_to_datetime(date_str)
         return dt.isoformat()
-    except Exception:
+    except (ValueError, TypeError, OverflowError):
         return date_str
 
 
@@ -277,11 +277,11 @@ def _extract_email_body_part(part: Any) -> str:
             decoded_text = payload.decode(charset, errors="replace")
         except (UnicodeDecodeError, LookupError) as decode_error:
             # 如果指定编码失败，尝试常见编码
-            logger.warning(f"字符编码 {charset} 解码失败: {decode_error}")
+            logger.warning("字符编码 %s 解码失败: %s", charset, decode_error)
             for fallback_charset in ["utf-8", "gbk", "gb2312", "latin-1"]:
                 try:
                     decoded_text = payload.decode(fallback_charset, errors="replace")
-                    logger.info(f"成功使用备用编码 {fallback_charset} 解码")
+                    logger.info("成功使用备用编码 %s 解码", fallback_charset)
                     break
                 except (UnicodeDecodeError, LookupError):
                     continue
@@ -293,15 +293,15 @@ def _extract_email_body_part(part: Any) -> str:
         # 限制长度并返回
         result = decoded_text[:MAX_BODY_LENGTH]
         if len(decoded_text) > MAX_BODY_LENGTH:
-            logger.debug(f"正文内容过长，截取前{MAX_BODY_LENGTH}字符")
+            logger.debug("正文内容过长，截取前%d字符", MAX_BODY_LENGTH)
 
         return result
 
     except AttributeError as attr_error:
-        logger.error(f"邮件部分对象属性错误: {attr_error}")
+        logger.error("邮件部分对象属性错误: %s", attr_error)
         return ""
     except Exception as unexpected_error:
-        logger.error(f"提取邮件正文时发生未知错误: {unexpected_error}")
+        logger.error("提取邮件正文时发生未知错误: %s", unexpected_error)
         return ""
 
 
diff --git a/src/pyflowx/conditions.py b/src/pyflowx/conditions.py
index e87b706..3715c33 100644
--- a/src/pyflowx/conditions.py
+++ b/src/pyflowx/conditions.py
@@ -11,6 +11,7 @@
 
 from __future__ import annotations
 
+import logging
 import os
 import shutil
 import subprocess
@@ -20,6 +21,8 @@ from typing import Any, Callable
 
 from .task import Condition, Context
 
+logger = logging.getLogger(__name__)
+
 __all__ = ["BuiltinConditions", "Condition", "Constants"]
 
 
@@ -153,7 +156,7 @@ class BuiltinConditions:
                 return False
             try:
                 return content in p.read_text(encoding="utf-8")
-            except Exception:
+            except (OSError, UnicodeDecodeError):
                 return False
 
         return _static(_check, f"FILE_CONTENT_EXISTS({path!r},{content!r})")
@@ -186,7 +189,8 @@ class BuiltinConditions:
                 return False
             try:
                 return predicate(ctx[dep_name])
-            except Exception:
+            except Exception as exc:
+                logger.warning("DEP_MATCHES predicate %r raised: %r", dep_name, exc)
                 return False
 
         _cond.__name__ = f"DEP_MATCHES({dep_name!r},{getattr(predicate, '__name__', 'pred')})"
diff --git a/src/pyflowx/executors.py b/src/pyflowx/executors.py
index 29781c8..083b5e6 100644
--- a/src/pyflowx/executors.py
+++ b/src/pyflowx/executors.py
@@ -56,7 +56,7 @@ from .report import RunReport
 from .storage import StateBackend, resolve_backend
 from .task import TaskEvent, TaskHooks, TaskResult, TaskSpec, TaskStatus
 
-logger = logging.getLogger("pyflowx")
+logger = logging.getLogger(__name__)
 
 # 观察者回调类型。
 EventCallback = Callable[[TaskEvent], None]
diff --git a/src/pyflowx/runner.py b/src/pyflowx/runner.py
index 3953dd8..67268ea 100644
--- a/src/pyflowx/runner.py
+++ b/src/pyflowx/runner.py
@@ -15,6 +15,7 @@ import argparse
 import enum
 import sys
 from dataclasses import dataclass, field, replace
+from pathlib import Path
 from typing import Any, Sequence, get_args
 
 from .compose import GraphComposer
@@ -138,9 +139,7 @@ class CliRunner:
     # ------------------------------------------------------------------ #
     def _prog_name(self) -> str:
         """从 sys.argv[0] 推导程序名."""
-        import os
-
-        return os.path.basename(sys.argv[0]) if sys.argv else "pyflowx"
+        return Path(sys.argv[0]).name if sys.argv else "pyflowx"
 
     def create_parser(self) -> argparse.ArgumentParser:
         """创建参数解析器.
diff --git a/src/pyflowx/task.py b/src/pyflowx/task.py
index f4de1c5..6705c9b 100644
--- a/src/pyflowx/task.py
+++ b/src/pyflowx/task.py
@@ -69,7 +69,7 @@ TaskCmd = Union[
 Strategy = Union[str, "StrategyKind"]
 StrategyKind = Any  # 占位，避免循环；executors 模块用 Literal 约束
 
-logger = logging.getLogger("pyflowx")
+logger = logging.getLogger(__name__)
 
 # 条件判断函数类型：接收依赖上下文（可能为空映射），返回是否应执行。
 Condition = Callable[[Context], bool]