fix(types): expose stdio stream encoding

app/adapters/system/stdio.py

@@ -16,6 +16,8 @@ class RotatingLineStream(io.TextIOBase):
     同时保证启动阶段的 print/uvicorn 输出也能按配置滚动。
     """
 
+    encoding = "utf-8"
+
     def __init__(self, log_file: Path, max_bytes: int, backup_count: int):
         """创建写入指定滚动日志文件的文本流。"""
         super().__init__()
@@ -37,11 +39,6 @@ class RotatingLineStream(io.TextIOBase):
         handler.setFormatter(logging.Formatter("%(message)s"))
         self._logger.addHandler(handler)
 
-    @property
-    def encoding(self) -> str:
-        """返回日志流使用的文本编码。"""
-        return "utf-8"
-
     def writable(self) -> bool:
         """声明该文本流支持写入。"""
         return True

mypy.ini

@@ -7,6 +7,7 @@ follow_imports = skip
 show_error_codes = True
 pretty = True
 files =
+    app/adapters/system/stdio.py,
     app/adapters/web/plugin/routes.py,
     app/api/endpoints/workflow.py,
     app/adapters/external/cookiecloud.py,

tests/fixtures/architecture/mypy-baseline.json

@@ -75,9 +75,6 @@
     "no-untyped-def": 1,
     "type-arg": 19
   },
-  "app/adapters/system/stdio.py": {
-    "override": 1
-  },
   "app/agent/llm/capability.py": {
     "no-any-return": 4,
     "no-untyped-def": 6,