初始提交：terminalX 可运行态（M0/M1/M1.5 已真机验证）

- M0: libghostty SSH 终端（渲染/输入/连接）+ 白屏修复(OutputGate) + 会话状态机/自动重连
- M1: tsnet 用户态组网 + SSH-over-tsnet(fd 桥)，shell 级真机验证；R5(Go+gvisor+C+++Swift 同进程) retire
- M1.5: tmux -CC 原生 tab（MVP）
- 结构: packages/(TXCore·TXTransport), apps/TerminalX, vendor/(libghostty-spm/libssh2/mbedtls/tsnet-bridge), artifacts/
- 文档: CLAUDE.md + docs/HANDOFF.md（新会话入口）
- 环境: 认证代理→依赖 vendor 本地化；Go 在 ~/.local/go；仅模拟器/未签名
- 待续: M2 mosh, tmux 多 pane, M4 安全(host key/SE)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

vendor/libghostty-spm/Example/MobileGhosttyApp/TerminalSelectionViewController.swift

@@ -0,0 +1,86 @@
+import UIKit
+
+final class TerminalSelectionViewController: UIViewController {
+    private let pendingText: String
+    private let pendingAnchorRange: NSRange?
+
+    var onDone: (() -> Void)?
+
+    private lazy var textView: UITextView = {
+        let view = UITextView()
+        view.isEditable = false
+        view.isSelectable = true
+        view.accessibilityIdentifier = "terminal.selectionTextView"
+        view.alwaysBounceVertical = true
+        view.font = .monospacedSystemFont(ofSize: 14, weight: .regular)
+        view.backgroundColor = .clear
+        view.textColor = .label
+        view.textContainerInset = .init(top: 12, left: 12, bottom: 12, right: 12)
+        view.translatesAutoresizingMaskIntoConstraints = false
+        return view
+    }()
+
+    init(text: String, anchorRange: NSRange?) {
+        pendingText = text
+        pendingAnchorRange = anchorRange
+        super.init(nibName: nil, bundle: nil)
+    }
+
+    @available(*, unavailable)
+    required init?(coder _: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        view.backgroundColor = .clear
+
+        textView.text = pendingText
+        view.addSubview(textView)
+
+        // Pin to view edges (not safe area) so scrolled content extends
+        // under the transparent navigation bar / home indicator the way
+        // iOS sheets expect. UIKit's contentInsetAdjustmentBehavior keeps
+        // the initial scroll position below the nav bar via
+        // adjustedContentInset.
+        NSLayoutConstraint.activate([
+            textView.topAnchor.constraint(equalTo: view.topAnchor),
+            textView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            textView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            textView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
+
+        navigationItem.rightBarButtonItem = UIBarButtonItem(
+            barButtonSystemItem: .done,
+            target: self,
+            action: #selector(handleDone)
+        )
+        navigationItem.rightBarButtonItem?.accessibilityIdentifier = "terminal.selectionDoneButton"
+    }
+
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        navigationController?.view.backgroundColor = .clear
+        navigationController?.navigationBar.standardAppearance.configureWithTransparentBackground()
+        navigationController?.navigationBar.scrollEdgeAppearance = navigationController?.navigationBar.standardAppearance
+    }
+
+    override func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
+        textView.becomeFirstResponder()
+
+        let nsText = textView.text as NSString
+        if let range = pendingAnchorRange, NSMaxRange(range) <= nsText.length {
+            textView.selectedRange = range
+            textView.scrollRangeToVisible(range)
+        } else {
+            textView.selectAll(nil)
+        }
+    }
+
+    @objc private func handleDone() {
+        dismiss(animated: true) { [weak self] in
+            self?.onDone?()
+        }
+    }
+}