diff --git a/backend/package/yuxi/agents/skills/service.py b/backend/package/yuxi/agents/skills/service.py
index fdddace4..9177061e 100644
--- a/backend/package/yuxi/agents/skills/service.py
+++ b/backend/package/yuxi/agents/skills/service.py
@@ -586,8 +586,10 @@ def _parse_skill_markdown(content: str) -> tuple[str, str, str, dict[str, Any]]:
 
     name = _validate_skill_display_name(str(data.get("name", "")))
     raw_slug = str(data.get("slug", "")).strip()
-    slug = _validate_skill_slug_value(raw_slug, field_name="slug") if raw_slug else _validate_skill_slug_value(
-        name, field_name="name"
+    slug = (
+        _validate_skill_slug_value(raw_slug, field_name="slug")
+        if raw_slug
+        else _validate_skill_slug_value(name, field_name="name")
     )
     description = str(data.get("description", "")).strip()
     if not description:
diff --git a/backend/package/yuxi/agents/toolkits/buildin/install_skill.py b/backend/package/yuxi/agents/toolkits/buildin/install_skill.py
index f68f6462..9431c1eb 100644
--- a/backend/package/yuxi/agents/toolkits/buildin/install_skill.py
+++ b/backend/package/yuxi/agents/toolkits/buildin/install_skill.py
@@ -15,7 +15,6 @@ from yuxi.repositories.conversation_repository import ConversationRepository
 from yuxi.storage.postgres.manager import pg_manager
 from yuxi.utils.logging_config import logger
 
-
 SANDBOX_PATH_HINT = (
     "请使用 /home/gem/user-data/workspace/...、/home/gem/user-data/uploads/... 或 /home/gem/user-data/outputs/..."
 )
@@ -83,9 +82,7 @@ def _download_skill_dir(backend, remote_dir: str, local_dir: Path) -> None:
         target_path.write_bytes(content)
 
 
-def _prepare_skill_from_sandbox(
-    sandbox_path: str, thread_id: str, uid: str, staging_root: Path
-) -> tuple[Path, str]:
+def _prepare_skill_from_sandbox(sandbox_path: str, thread_id: str, uid: str, staging_root: Path) -> tuple[Path, str]:
     """从 Sandbox 路径准备 skill 目录。返回 (本地目录, 原始 skill name)。"""
     from yuxi.agents.backends.sandbox import ProvisionerSandboxBackend, resolve_virtual_path
     from yuxi.agents.skills.service import (