Fix Windows Python spawning

src/services/python-json-worker.ts

@@ -111,6 +111,7 @@ export class PythonJsonWorker {
 
     const child = spawn(launch.command, [...launch.args, scriptPath], {
       stdio: ["pipe", "pipe", "pipe"],
+      shell: process.platform === "win32",
       env: {
         ...process.env,
         HF_HOME: cachePath,