refactor(system cli): 统一命名风格并新增图标缓存重置工具

1. 将系统任务的大写命名改为蛇形命名：CLR→clr, SETENV→setenv, WHICH→which
2. 更新对应cli工具的导入和调用代码
3. 新增restart_icon_cache命令行工具和reset_icon_cache系统任务

src/pyflowx/cli/clearscreen.py

@@ -6,10 +6,10 @@
 from __future__ import annotations
 
 import pyflowx as px
-from pyflowx.tasks.system import CLR
+from pyflowx.tasks.system import clr
 
 
 def main() -> None:
     """清屏工具主函数."""
-    graph = px.Graph.from_specs([CLR()])
+    graph = px.Graph.from_specs([clr()])
     px.run(graph, strategy="thread")

src/pyflowx/cli/hfdownload.py

@@ -3,7 +3,7 @@ from pathlib import Path
 from typing import Literal, get_args
 
 import pyflowx as px
-from pyflowx.tasks.system import SETENV
+from pyflowx.tasks.system import setenv
 
 HFDownloadType = Literal["model", "dataset", "space"]
 
@@ -30,7 +30,7 @@ def main():
     download_dir.mkdir(parents=True, exist_ok=True)
 
     graph = px.Graph.from_specs([
-        SETENV("HF_ENDPOINT", "https://hf-mirror.com"),
+        setenv("HF_ENDPOINT", "https://hf-mirror.com"),
         px.TaskSpec(
             name="download",
             cmd=[

src/pyflowx/cli/restarticoncache.py

@@ -0,0 +1,10 @@
+from __future__ import annotations
+
+import pyflowx as px
+from pyflowx.tasks.system import reset_icon_cache
+
+
+def main() -> None:
+    """重启图标缓存工具主函数."""
+    graph = px.Graph.from_specs(reset_icon_cache())
+    px.run(graph, strategy="thread")

src/pyflowx/cli/which.py

@@ -8,7 +8,7 @@ from __future__ import annotations
 import argparse
 
 import pyflowx as px
-from pyflowx.tasks.system import WHICH
+from pyflowx.tasks.system import which
 
 
 def main() -> None:
@@ -17,5 +17,5 @@ def main() -> None:
     parser.add_argument("commands", nargs="+", help="要查找的命令名称, 如: python ls ps gcc...")
     args = parser.parse_args()
 
-    graph = px.Graph.from_specs([WHICH(cmd) for cmd in args.commands])
+    graph = px.Graph.from_specs([which(cmd) for cmd in args.commands])
     px.run(graph, strategy="thread")

src/pyflowx/tasks/system.py

@@ -13,13 +13,35 @@ import pyflowx as px
 from pyflowx.conditions import Constants
 
 
-def CLR():
+def clr():
     """清屏任务."""
     cmd = ["cls"] if Constants.IS_WINDOWS else ["clear"]
     return px.TaskSpec("clear_screen", fn=lambda: subprocess.run(cmd, check=False))
 
 
-def SETENV(name: str, value: str, default: bool = False):
+def reset_icon_cache() -> list[px.TaskSpec]:
+    """重置图标缓存任务."""
+    if not Constants.IS_WINDOWS:
+        print("reset_icon_cache: 仅在 Windows 上支持")
+        return []
+
+    return [
+        px.TaskSpec("kill_explorer", fn=lambda: subprocess.run(["taskkill", "/f", "/im", "explorer.exe"], check=False)),
+        px.TaskSpec(
+            "delete_icon_cache",
+            fn=lambda: subprocess.run(["del", "/a", "/q", r"%localappdata%\IconCache.db"], check=False),
+        ),
+        px.TaskSpec(
+            "delete_icon_cache_all",
+            fn=lambda: subprocess.run(
+                ["del", "/a", "/q", r"%localappdata%\Microsoft\Windows\Explorer\iconcache*"], check=False
+            ),
+        ),
+        px.TaskSpec("restart_explorer", fn=lambda: subprocess.run(["start", "explorer.exe"], check=False)),
+    ]
+
+
+def setenv(name: str, value: str, default: bool = False):
     """设置环境变量任务."""
 
     def set_env():
@@ -31,7 +53,7 @@ def SETENV(name: str, value: str, default: bool = False):
     return px.TaskSpec(f"setenv_{name.lower()}", fn=set_env, verbose=True)
 
 
-def WHICH(cmd: str):
+def which(cmd: str):
     """查找命令路径任务."""
     which_cmd = "where" if Constants.IS_WINDOWS else "which"
 
@@ -48,4 +70,4 @@ def WHICH(cmd: str):
     return px.TaskSpec(f"which_{cmd}", fn=find_command)
 
 
-__all__ = ["CLR", "SETENV", "WHICH"]
+__all__ = ["clr", "setenv", "which"]