hands test

hands/Sources/byre-hands/Server.swift

@@ -26,28 +26,31 @@ struct Tool {
     let name: String
     let description: String
     let schema: String
-    let run: @MainActor ([String: Any]) async throws -> [Content]
+    let run: ([String: Any]) async throws -> [Content]
 }
 
+let stdoutLock = NSLock()
+
 @main
 struct Server {
     static func main() {
         _ = NSApplication.shared
+        AXUIElementSetMessagingTimeout(AXUIElementCreateSystemWide(), 3)
         Thread.detachNewThread {
+            let inFlight = DispatchGroup()
             while let line = readLine() {
-                let done = DispatchSemaphore(value: 0)
-                Task { @MainActor in
+                inFlight.enter()
+                Task.detached {
                     await handle(line)
-                    done.signal()
+                    inFlight.leave()
                 }
-                done.wait()
             }
+            inFlight.wait()
             exit(0)
         }
         RunLoop.main.run()
     }
 
-    @MainActor
     static func handle(_ line: String) async {
         guard let data = line.data(using: .utf8),
               let req = try? JSONSerialization.jsonObject(with: data) as? [String: Any],
@@ -75,12 +78,13 @@ struct Server {
         default:
             resp["error"] = ["code": -32601, "message": "method not found: \(req["method"] ?? "")"]
         }
-        let out = try! JSONSerialization.data(withJSONObject: resp, options: .withoutEscapingSlashes)
-        FileHandle.standardOutput.write(out)
-        FileHandle.standardOutput.write(Data("\n".utf8))
+        var out = try! JSONSerialization.data(withJSONObject: resp, options: .withoutEscapingSlashes)
+        out.append(Data("\n".utf8))
+        stdoutLock.withLock {
+            FileHandle.standardOutput.write(out)
+        }
     }
 
-    @MainActor
     static func call(_ params: [String: Any]) async -> [String: Any] {
         let name = params["name"] as? String ?? ""
         let args = params["arguments"] as? [String: Any] ?? [:]