feat: awg connection states (#2091)

* Submodule amneziawg-apple updated

* feat: add support for controlled junk and special handshake timeout in AWG configurator

* refactor: improve AWG configurator and iOS controller logic

* awg_configurator.cpp reverted

client/platforms/ios/PacketTunnelProvider.swift

@@ -76,7 +76,12 @@ class PacketTunnelProvider: NEPacketTunnelProvider {
                 return
             }
 
-            guard hasMeaningfulChange, self.protoType != nil else { return }
+            guard hasMeaningfulChange, let proto = self.protoType else { return }
+
+            // WireGuard/AWG manages network changes internally; avoid restarting the tunnel here.
+            if proto == .wireguard {
+                return
+            }
 
             DispatchQueue.main.async {
                 self.handle(networkChange: path) { _ in }
@@ -123,6 +128,16 @@ class PacketTunnelProvider: NEPacketTunnelProvider {
     }
 
   override func handleAppMessage(_ messageData: Data, completionHandler: ((Data?) -> Void)? = nil) {
+      if messageData.count == 1 && messageData[0] == 0 {
+          guard let completionHandler else { return }
+          if protoType == .wireguard {
+              handleWireguardAppMessage(messageData, completionHandler: completionHandler)
+          } else {
+              completionHandler(nil)
+          }
+          return
+      }
+
       guard let message = String(data: messageData, encoding: .utf8) else {
           if let completionHandler {
               completionHandler(nil)
@@ -133,6 +148,10 @@ class PacketTunnelProvider: NEPacketTunnelProvider {
       neLog(.info, title: "App said: ", message: message)
 
       guard let message = try? JSONSerialization.jsonObject(with: messageData, options: []) as? [String: Any] else {
+          if protoType == .wireguard {
+              handleWireguardAppMessage(messageData, completionHandler: completionHandler)
+              return
+          }
           neLog(.error, message: "Failed to serialize message from app")
           return
       }