style: 修复 yapf 格式校验报错

CI 的 yapf lint 在三处与本仓库的 [tool.yapf]
(based_on_style=pep8, column_limit=120) 不一致，本提交按 yapf
建议自动修正：

- trpc_agent_sdk/code_executors/__init__.py: 删除 import 块和
  __all__ 之间的多余空行（同段跨语义边界 yapf 不允许双空行）。
- trpc_agent_sdk/code_executors/cube/_code_executor.py:
  ``Field(default_factory=...)`` 单行表达式 < 120 列，yapf 折叠
  为单行。
- trpc_agent_sdk/code_executors/local/_local_ws_runtime.py:
  超过 120 列的 ``self._build_manifest_output(...)`` 调用按 yapf
  默认风格逐参数换行。

无逻辑变更；仅排版。

Assisted-by: Cursor:claude-opus-4.7
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: 2 people

trpc_agent_sdk/code_executors/__init__.py

@@ -92,7 +92,6 @@
 from .local import create_local_workspace_runtime
 from .utils import CodeExecutionUtils
 
-
 __all__ = [
     "load_artifact_helper",
     "parse_artifact_ref",

trpc_agent_sdk/code_executors/cube/_code_executor.py

@@ -90,9 +90,7 @@ class CubeCodeExecutor(BaseCodeExecutor):
     # at call time so the base list stays the single source of truth;
     # callers may still override via the ``code_block_delimiters`` field
     # at construction time.
-    code_block_delimiters: list[CodeBlockDelimiter] = Field(
-        default_factory=_cube_default_code_block_delimiters,
-    )
+    code_block_delimiters: list[CodeBlockDelimiter] = Field(default_factory=_cube_default_code_block_delimiters, )
 
     # `_client` is `Optional` because :meth:`close` / :meth:`destroy`
     # legitimately drop the handle post-construction. `_cfg` has no such

trpc_agent_sdk/code_executors/local/_local_ws_runtime.py

@@ -499,7 +499,11 @@ async def collect_outputs(self,
 
         real_root, matches = self._enumerate_local_matches(ws.path, normalize_globs(spec.globs))
         out, saved_names, saved_vers = await self._build_manifest_output(
-            real_root, spec, matches, self._fetch_bytes, ctx,
+            real_root,
+            spec,
+            matches,
+            self._fetch_bytes,
+            ctx,
         )
 
         # Record output in workspace metadata (local-only bookkeeping).