Keyboard tracking в RosettaMessageListController

Rosetta/Features/Chats/ChatDetail/ListView/RosettaMessageListController.swift

@@ -101,6 +101,45 @@ final class RosettaMessageListController: UIViewController {
         listView.onScroll = { [weak self] _, _ in
             // TODO: scroll-to-bottom button visibility
         }
+
+        // Keyboard tracking
+        NotificationCenter.default.addObserver(
+            self, selector: #selector(keyboardWillShow(_:)),
+            name: UIResponder.keyboardWillShowNotification, object: nil
+        )
+        NotificationCenter.default.addObserver(
+            self, selector: #selector(keyboardWillHide(_:)),
+            name: UIResponder.keyboardWillHideNotification, object: nil
+        )
+    }
+
+    // MARK: - Keyboard
+
+    @objc private func keyboardWillShow(_ notification: Notification) {
+        guard let frame = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect,
+              let duration = notification.userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? Double,
+              let curveRaw = notification.userInfo?[UIResponder.keyboardAnimationCurveUserInfoKey] as? UInt
+        else { return }
+
+        let keyboardHeight = frame.height
+        let curve = UIView.AnimationOptions(rawValue: curveRaw << 16)
+
+        UIView.animate(withDuration: duration, delay: 0, options: curve) {
+            self.listView.contentInsets.bottom = keyboardHeight
+        }
+    }
+
+    @objc private func keyboardWillHide(_ notification: Notification) {
+        guard let duration = notification.userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? Double,
+              let curveRaw = notification.userInfo?[UIResponder.keyboardAnimationCurveUserInfoKey] as? UInt
+        else { return }
+
+        let curve = UIView.AnimationOptions(rawValue: curveRaw << 16)
+
+        UIView.animate(withDuration: duration, delay: 0, options: curve) {
+            self.listView.contentInsets.bottom = 0
+        }
+        onKeyboardDidHide?()
     }
 
     /// Setup composer view (called externally after init).