Vendor OpenClaw source as Adolf fork baseline

Adolf is a fork/vendored clone of github.com/openclaw/openclaw (v2026.6.11),
free to diverge. Tree copied sans upstream .git; upstream remote added for
future syncs. Node pinned to 24 (.nvmrc); engines already require >=22.19.
Preserves docs/ARCHITECTURE.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LeqyaxJF2nbRXJtae2kNB2

apps/ios/Sources/Gateway/TCPProbe.swift

@@ -0,0 +1,42 @@
+import Foundation
+import Network
+import os
+
+enum TCPProbe {
+    static func probe(host: String, port: Int, timeoutSeconds: Double, queueLabel: String) async -> Bool {
+        guard port >= 1, port <= 65535 else { return false }
+        guard let nwPort = NWEndpoint.Port(rawValue: UInt16(port)) else { return false }
+
+        let endpointHost = NWEndpoint.Host(host)
+        let connection = NWConnection(host: endpointHost, port: nwPort, using: .tcp)
+
+        return await withCheckedContinuation { cont in
+            let queue = DispatchQueue(label: queueLabel)
+            let finished = OSAllocatedUnfairLock(initialState: false)
+            let finish: @Sendable (Bool) -> Void = { ok in
+                let shouldResume = finished.withLock { flag -> Bool in
+                    if flag { return false }
+                    flag = true
+                    return true
+                }
+                guard shouldResume else { return }
+                connection.cancel()
+                cont.resume(returning: ok)
+            }
+
+            connection.stateUpdateHandler = { state in
+                switch state {
+                case .ready:
+                    finish(true)
+                case .failed, .cancelled:
+                    finish(false)
+                default:
+                    break
+                }
+            }
+
+            connection.start(queue: queue)
+            queue.asyncAfter(deadline: .now() + timeoutSeconds) { finish(false) }
+        }
+    }
+}