refactor: rename cmds module to cmd for better consistency (#2830)

- Renamed `cmds` module to `cmd` for better naming consistency
- Reorganized command modules into separate files under src/cmd/
- Updated all imports and references to use the new module name
- Fixed missing dependency in webdav.rs to reference core::backup
- Updated tray module to use new cmd namespace
- Improved uwp.rs module structure using platform-specific implementations
- Removed unnecessary imports from various command files

src-tauri/src/cmd/clash.rs

@@ -0,0 +1,79 @@
+use crate::{
+    config::*,
+    core::*,
+    feat,
+    wrap_err,
+};
+use super::CmdResult;
+use serde_yaml::Mapping;
+
+/// 复制Clash环境变量
+#[tauri::command]
+pub fn copy_clash_env() -> CmdResult {
+    feat::copy_clash_env();
+    Ok(())
+}
+
+/// 获取Clash信息
+#[tauri::command]
+pub fn get_clash_info() -> CmdResult<ClashInfo> {
+    Ok(Config::clash().latest().get_client_info())
+}
+
+/// 修改Clash配置
+#[tauri::command]
+pub async fn patch_clash_config(payload: Mapping) -> CmdResult {
+    wrap_err!(feat::patch_clash(payload).await)
+}
+
+/// 修改Clash模式
+#[tauri::command]
+pub async fn patch_clash_mode(payload: String) -> CmdResult {
+    Ok(feat::change_clash_mode(payload))
+}
+
+/// 切换Clash核心
+#[tauri::command]
+pub async fn change_clash_core(clash_core: String) -> CmdResult<Option<String>> {
+    log::info!(target: "app", "changing core to {clash_core}");
+    
+    match CoreManager::global().change_core(Some(clash_core.clone())).await {
+        Ok(_) => {
+            log::info!(target: "app", "core changed to {clash_core}");
+            handle::Handle::notice_message("config_core::change_success", &clash_core);
+            handle::Handle::refresh_clash();
+            Ok(None)
+        }
+        Err(err) => {
+            let error_msg = err.to_string();
+            log::error!(target: "app", "failed to change core: {error_msg}");
+            handle::Handle::notice_message("config_core::change_error", &error_msg);
+            Ok(Some(error_msg))
+        }
+    }
+}
+
+/// 重启核心
+#[tauri::command]
+pub async fn restart_core() -> CmdResult {
+    wrap_err!(CoreManager::global().restart_core().await)
+}
+
+/// 获取代理延迟
+#[tauri::command]
+pub async fn clash_api_get_proxy_delay(
+    name: String,
+    url: Option<String>,
+    timeout: i32,
+) -> CmdResult<clash_api::DelayRes> {
+    match clash_api::get_proxy_delay(name, url, timeout).await {
+        Ok(res) => Ok(res),
+        Err(err) => Err(err.to_string()),
+    }
+}
+
+/// 测试URL延迟
+#[tauri::command]
+pub async fn test_delay(url: String) -> CmdResult<u32> {
+    Ok(feat::test_delay(url).await.unwrap_or(10000u32))
+}