Add windows support in strider (#4854)

* Add Windows path support to strider plugin

Strider is a WASM plugin where std::path::PathBuf uses Unix semantics,
so Windows backslash paths break parent(), join(), strip_prefix(), etc.

Fix by normalizing all incoming paths to forward slashes at plugin
boundaries and converting back to native backslashes for display. A new
platform.rs module detects the host OS at runtime from the initial_cwd
format and centralizes all platform-aware logic.

Also fix scan_host_folder on the server side: canonicalize
plugin_host_folder so the starts_with security check works on Windows,
where canonicalize() adds the \?\ prefix.

* Add virtual root view for drive and WSL navigation in strider

On Windows, navigating up from a drive root (e.g. C:\) now shows a
"Computer" view listing all available drives and WSL distributions.
Drives are enumerated via GetLogicalDriveStringsW and WSL distros
via `wsl -l -q` (since read_dir on \wsl.localhost fails with OS
error 64/67). Drive letters appear before WSL entries, which are
displayed as "Ubuntu-24.04 (WSL)" etc. On non-Windows platforms,
behavior is unchanged.

* Rename ListHostEntries to ListWindowsVolumes and gate behind FullHdAccess

The old name was misleading — on Unix it just returned `/`, which isn't
"listing host entries." Rename to ListWindowsVolumes to make the
Windows-specific intent explicit, gate behind FullHdAccess permission,
and replace the Unix implementation with a log::error since the command
is not meaningful on non-Windows platforms.

* Replace direct array indexing with .get() in strider platform detection

Use safe accessors and matches! macro instead of direct byte indexing
for bounds-checked access patterns.

---------

Co-authored-by: divens <divens.dev@gmail.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/default-plugins/strider/src/file_list_view.rs b/default-plugins/strider/src/file_list_view.rs
index 2226e618..ee620970 100644
--- a/default-plugins/strider/src/file_list_view.rs
+++ b/default-plugins/strider/src/file_list_view.rs
@@ -1,3 +1,4 @@
+use crate::platform::Platform;
 use crate::shared::{calculate_list_bounds, render_list_tip};
 use crate::state::refresh_directory;
 use pretty_bytes::converter::convert as pretty_bytes;
@@ -12,6 +13,7 @@ pub struct FileListView {
     pub path_is_dir: bool,
     pub files: Vec<FsEntry>,
     pub cursor_hist: HashMap<PathBuf, usize>,
+    pub platform: Platform,
 }
 
 impl Default for FileListView {
@@ -21,14 +23,18 @@ impl Default for FileListView {
             path: PathBuf::new(),
             files: Default::default(),
             cursor_hist: Default::default(),
+            platform: Platform::default(),
         }
     }
 }
 
 impl FileListView {
     pub fn descend_to_previous_path(&mut self) {
+        if Platform::is_root(&self.path, self.platform) {
+            return;
+        }
         if let Some(parent) = self.path.parent() {
-            self.path = parent.to_path_buf();
+            self.path = Platform::ensure_drive_root(parent.to_path_buf(), self.platform);
         } else {
             self.path = PathBuf::new();
         }
@@ -65,6 +71,7 @@ impl FileListView {
     ) {
         let mut files = vec![];
         for (entry, entry_metadata) in paths {
+            let entry = Platform::normalize(&entry);
             let entry = self
                 .path
                 .join(entry.strip_prefix("/host").unwrap_or(&entry));
@@ -126,7 +133,7 @@ impl FileListView {
                     .map(|s| pretty_bytes(s as f64))
                     .unwrap_or("".to_owned());
                 if entry.is_folder() {
-                    file_or_folder_name.push('/');
+                    file_or_folder_name.push(self.platform.separator());
                 }
                 let file_or_folder_name_width = file_or_folder_name.width();
                 let size_width = size.width();