fix(core): Use junction crate on windows for symlinks

Cargo.lock

@@ -3116,6 +3116,16 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "junction"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "160f2eade097f30263b548aae5deb12ad349c909baa710fa24b92c9090b2e006"
+dependencies = [
+ "scopeguard",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "keyboard-types"
 version = "0.8.3"
@@ -4455,6 +4465,7 @@ dependencies = [
  "dunce",
  "futures-lite",
  "futures-util",
+ "junction",
  "sanitize-filename",
  "serde",
  "serde_json",

Cargo.toml

@@ -95,6 +95,7 @@ sanitize-filename = { version = "=0.6.0" }
 regex = { version = "=1.12.3" }
 parking_lot = { version = "=0.12.5" }
 dunce = { version = "=1.0.5" }
+junction = { version = "=2.0.0" }
 bytes = { version = "=1.11.1" }
 indicatif = { version = "=0.18.4", features = [ "tokio" ]}
 sysinfo = { version = "=0.39.5" }

packages/oneclient_core/src/lib.rs

@@ -1,4 +1,5 @@
 #![recursion_limit = "256"]
+
 #[cfg(debug_assertions)]
 pub mod dev;
 

packages/polyio/Cargo.toml

@@ -37,3 +37,6 @@ serde_json.workspace = true
 dunce.workspace = true
 bytes.workspace = true
 
+[target.'cfg(windows)'.dependencies]
+junction.workspace = true
+

packages/polyio/src/file.rs

@@ -393,19 +393,15 @@ pub async fn symlink_dir(
 	let original = original.as_ref();
 	let link = link.as_ref();
 
-	// tokio has no async junction API, so the Windows path runs the blocking
-	// std call on the blocking pool; Unix uses tokio's async symlink directly.
 	#[cfg(windows)]
 	{
 		let path = link.to_string_lossy().to_string();
 		let original = original.to_path_buf();
 		let link = link.to_path_buf();
-		return tokio::task::spawn_blocking(move || {
-			std::os::windows::fs::junction_point(&original, &link)
-		})
-		.await
-		.map_err(std::io::Error::other)?
-		.map_err(|e| IOError::PathIOError { source: e, path });
+		return tokio::task::spawn_blocking(move || junction::create(&original, &link))
+			.await
+			.map_err(std::io::Error::other)?
+			.map_err(|e| IOError::PathIOError { source: e, path });
 	}
 
 	#[cfg(not(windows))]