feat(account): add managed credits and cloud gateway

Introduce optional Apple account-backed credits with scoped gateway access while preserving local and BYOK paths. Refresh assistant behavior, tests, privacy disclosures, docs, and the website for the 2.0 experience.

OSGKeyboardMacTests/MacAudioRecorderSnapshotStreamTests.swift

@@ -8,8 +8,8 @@
 // same lock, and because the release path runs `stop()` on the main actor the
 // whole app wedged.
 
-import XCTest
 @testable import OSGKeyboard
+import XCTest
 
 final class MacAudioRecorderSnapshotStreamTests: XCTestCase {
 

OSGKeyboardMacTests/MacDictationViewModelTests.swift

@@ -4,8 +4,8 @@
 // Regression coverage for cancelling an asynchronous recorder start.
 
 import Foundation
-import XCTest
 @testable import OSGKeyboard
+import XCTest
 
 @MainActor
 final class MacDictationViewModelTests: XCTestCase {

OSGKeyboardMacTests/MacTextInsertionServiceTests.swift

@@ -4,8 +4,8 @@
 // Regression coverage for clipboard preservation and captured-app context.
 
 import AppKit
-import XCTest
 @testable import OSGKeyboard
+import XCTest
 
 final class MacTextInsertionServiceTests: XCTestCase {