feat(settings): 轻应用登录参数与界面模式管理员默认

- 登录时从路由参数 yUserId/access_token 获取并存入 userInfo
- 轻应用管理页路由参数新增 userName/gateDepartName/typeName 选项
- 添加系统默认界面模式设置（管理员可指定全量/简洁）
- useLayoutMode hook 支持优先级：用户自选 > 管理员默认 > 会话级

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

offline-backend-20260512/backend/app/gateway/routers/system_settings.py

@@ -311,12 +311,14 @@ class AppearanceResponse(BaseModel):
     default_theme: Literal["light", "dark", "lightblue"] = Field(..., description="System default theme — light, dark or lightblue")
     default_skill_view: Literal["card", "list"] = Field(..., description="System default skill list display mode — card or list")
     default_agent_view: Literal["card", "list"] = Field(..., description="System default agent list display mode — card or list")
+    default_layout_mode: Literal["full", "compact"] = Field(..., description="System default interface layout — full (sidebar + header) or compact (hidden)")
 
 
 class AppearanceUpdateRequest(BaseModel):
     default_theme: Literal["light", "dark", "lightblue"] | None = Field(default=None)
     default_skill_view: Literal["card", "list"] | None = Field(default=None)
     default_agent_view: Literal["card", "list"] | None = Field(default=None)
+    default_layout_mode: Literal["full", "compact"] | None = Field(default=None)
 
 
 def _appearance_response(appearance) -> AppearanceResponse:
@@ -324,6 +326,7 @@ def _appearance_response(appearance) -> AppearanceResponse:
         default_theme=appearance.default_theme,
         default_skill_view=appearance.default_skill_view,
         default_agent_view=appearance.default_agent_view,
+        default_layout_mode=appearance.default_layout_mode,
     )
 
 
@@ -343,7 +346,7 @@ async def update_appearance_settings(
     current = load_system_settings()
     fields = body.model_dump(exclude_unset=True)
     update: dict[str, object] = {}
-    for key in ("default_theme", "default_skill_view", "default_agent_view"):
+    for key in ("default_theme", "default_skill_view", "default_agent_view", "default_layout_mode"):
         if key in fields and fields[key] is not None:
             update[key] = fields[key]
     if update:

offline-backend-20260512/backend/packages/harness/deerflow/config/system_settings.py

@@ -59,6 +59,10 @@ class AppearanceSettings(BaseModel):
         default="card",
         description="Default agent list display mode for users who haven't picked their own (card / list)",
     )
+    default_layout_mode: Literal["full", "compact"] = Field(
+        default="full",
+        description="Default interface layout for users who haven't picked their own — full (sidebar + header) / compact (hidden)",
+    )
     model_config = ConfigDict(extra="ignore")