SFTP 本地目录列表在 Windows 上列出各个驱动器

Windows 上每个盘是一个独立的根，目录列表原来只有当前路径的各级和主目录、桌面、文稿、下载，
离不开起始的盘（只能在「打开目录/书签」里手动输入 D:\）。现在「位置」里按 WinSCP 的样子
列出所有盘符：「C: 本地磁盘」「E: 可移动磁盘」「Z: 网络驱动器」「F: CD 驱动器」。

盘符用 GetLogicalDrives 和 GetDriveTypeW 取，不读卷标。位置改在后台随每次读本地目录
一起重新取，所以新插上的 U 盘刷新一下就出现，也不在 UI 线程上碰网络驱动器。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/ui/sftp.rs

@@ -1271,6 +1271,50 @@ async fn sftp_tab_reconnects_from_its_tab_bar_and_reports_at_the_bottom_left(
     cx.update(|cx| assert_eq!(workspace.read(cx).explorers_of(HostId(DB_01), cx).len(), 2));
 }
 
+/// The 目录列表 select's places, Windows drives among them, are read again
+/// with each local listing: a drive plugged in shows up on the next refresh.
+#[gpui_kit::test]
+async fn local_places_are_read_again_with_each_listing(cx: &mut TestAppContext) {
+    use shellrs::app::{ExplorerAction, ExplorerCommand};
+    use shellrs::sftp::{DriveKind, Place};
+    let local = FakeLocalDirectory::default();
+    let system = (Place::Drive('C', DriveKind::Local), "/c".to_string());
+    local
+        .places
+        .lock()
+        .unwrap()
+        .push((system.0, system.1.clone().into()));
+    let (handle, workspace) =
+        open_workspace_with_services(cx, Arc::new(FakeSftpProvider::default()), local.clone());
+    open_test_explorer(cx, handle).await;
+    let places = |cx: &mut TestAppContext| {
+        cx.update(|cx| {
+            let explorer = workspace.read(cx).explorer(ExplorerId(SFTP_TAB)).unwrap();
+            explorer.read(cx).local().read(cx).places().to_vec()
+        })
+    };
+    assert_eq!(places(cx), std::slice::from_ref(&system));
+
+    let stick = (Place::Drive('E', DriveKind::Removable), "/e".to_string());
+    local
+        .places
+        .lock()
+        .unwrap()
+        .push((stick.0, stick.1.clone().into()));
+    cx.update_window(handle.into(), |_, window, cx| {
+        window.dispatch_action(
+            Box::new(ExplorerAction::new(
+                ExplorerId(SFTP_TAB),
+                ExplorerCommand::Refresh { remote: false },
+            )),
+            cx,
+        );
+    })
+    .unwrap();
+    cx.run_until_parked();
+    assert_eq!(places(cx), [system, stick]);
+}
+
 #[gpui_kit::test]
 async fn sftp_file_commands_confirm_validate_and_send_one_operation(cx: &mut TestAppContext) {
     use shellrs::app::{ExplorerAction, ExplorerCommand};

tests/ui/support/sftp.rs

@@ -271,6 +271,8 @@ pub struct FakeLocalDirectory {
     pub calls: Arc<Mutex<Vec<String>>>,
     /// The files the editor reads and writes, in memory.
     pub files: Arc<Mutex<std::collections::BTreeMap<std::path::PathBuf, Vec<u8>>>>,
+    /// The places it offers, such as a drive plugged in.
+    pub places: Arc<Mutex<Vec<(shellrs::sftp::Place, std::path::PathBuf)>>>,
 }
 
 impl FakeLocalDirectory {
@@ -287,6 +289,9 @@ impl LocalDirectoryProvider for FakeLocalDirectory {
     fn list(&self, path: &std::path::Path) -> anyhow::Result<DirectoryListing> {
         Ok(fake_listing(path.to_str().unwrap()))
     }
+    fn places(&self) -> Vec<(shellrs::sftp::Place, std::path::PathBuf)> {
+        self.places.lock().unwrap().clone()
+    }
     fn trash(&self, paths: &[std::path::PathBuf]) -> anyhow::Result<()> {
         self.record(format!("trash {paths:?}"))
     }