iOS remote client: native UIKit surface, WS logging, client-side layout persistence

- Add remote-client-ios: full native UIKit app with Objects/View/UILayout/Functions pattern
- Widget hierarchy: BaseWidget → Fader, Toggle, Transport, Title, Feedback, LogWidget
- LoggingVC: child VC embedded in LogWidget for live WS message inspection
- Codable model: ModelPresetLoadToRemoteDevice with snake_case decoder strategy
- Layout persistence: UserDefaults keyed by preset_uuid, fully client-side
- WS logging: dedicated WS In/Out floating panels on desktop app
- Remove HTTP server and JS client (replaced by native iOS app)
- Add Xcode noise to .gitignore (xcuserstate, xcuserdata)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

remote-client-ios/remote-client-iosTests/remote_client_iosTests.swift

@@ -0,0 +1,17 @@
+//
+//  remote_client_iosTests.swift
+//  remote-client-iosTests
+//
+//  Created by p4piwabl0 on 6/30/26.
+//
+
+import Testing
+@testable import remote_client_ios
+
+struct remote_client_iosTests {
+
+    @Test func example() async throws {
+        // Write your test here and use APIs like `#expect(...)` to check expected conditions.
+    }
+
+}