Verify Views files against decompiled, extract embedded types

Fixed files:
- SkiaImageButton.cs: Added SVG support with multi-path search
- SkiaNavigationPage.cs: Added LinuxApplication.IsGtkMode check
- SkiaRefreshView.cs: Added ICommand support (Command, CommandParameter)
- SkiaTemplatedView.cs: Added missing using statements

Extracted embedded types to separate files (matching decompiled pattern):
- From SkiaMenuBar.cs: MenuBarItem, MenuItem, SkiaMenuFlyout, MenuItemClickedEventArgs
- From SkiaNavigationPage.cs: NavigationEventArgs
- From SkiaTabbedPage.cs: TabItem
- From SkiaVisualStateManager.cs: SkiaVisualStateGroupList, SkiaVisualStateGroup, SkiaVisualState, SkiaVisualStateSetter
- From SkiaSwipeView.cs: SwipeItem, SwipeStartedEventArgs, SwipeEndedEventArgs
- From SkiaFlyoutPage.cs: FlyoutLayoutBehavior (already separate)
- From SkiaIndicatorView.cs: IndicatorShape (already separate)
- From SkiaBorder.cs: SkiaFrame
- From SkiaCarouselView.cs: PositionChangedEventArgs
- From SkiaCollectionView.cs: SkiaSelectionMode, ItemsLayoutOrientation
- From SkiaContentPresenter.cs: LayoutAlignment

Verified matching decompiled:
- SkiaContextMenu.cs, SkiaFlexLayout.cs, SkiaGraphicsView.cs

Build: 0 errors

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Services/IInputMethodService.cs

@@ -79,153 +79,3 @@ public interface IInputMethodService
     /// </summary>
     event EventHandler? PreEditEnded;
 }
-
-/// <summary>
-/// Represents an input context that can receive IME input.
-/// </summary>
-public interface IInputContext
-{
-    /// <summary>
-    /// Gets or sets the current text content.
-    /// </summary>
-    string Text { get; set; }
-
-    /// <summary>
-    /// Gets or sets the cursor position.
-    /// </summary>
-    int CursorPosition { get; set; }
-
-    /// <summary>
-    /// Gets the selection start position.
-    /// </summary>
-    int SelectionStart { get; }
-
-    /// <summary>
-    /// Gets the selection length.
-    /// </summary>
-    int SelectionLength { get; }
-
-    /// <summary>
-    /// Called when text is committed from the IME.
-    /// </summary>
-    /// <param name="text">The committed text.</param>
-    void OnTextCommitted(string text);
-
-    /// <summary>
-    /// Called when pre-edit text changes.
-    /// </summary>
-    /// <param name="preEditText">The current pre-edit text.</param>
-    /// <param name="cursorPosition">Cursor position within pre-edit text.</param>
-    void OnPreEditChanged(string preEditText, int cursorPosition);
-
-    /// <summary>
-    /// Called when pre-edit mode ends.
-    /// </summary>
-    void OnPreEditEnded();
-}
-
-/// <summary>
-/// Event args for text committed events.
-/// </summary>
-public class TextCommittedEventArgs : EventArgs
-{
-    /// <summary>
-    /// The committed text.
-    /// </summary>
-    public string Text { get; }
-
-    public TextCommittedEventArgs(string text)
-    {
-        Text = text;
-    }
-}
-
-/// <summary>
-/// Event args for pre-edit changed events.
-/// </summary>
-public class PreEditChangedEventArgs : EventArgs
-{
-    /// <summary>
-    /// The current pre-edit text.
-    /// </summary>
-    public string PreEditText { get; }
-
-    /// <summary>
-    /// Cursor position within the pre-edit text.
-    /// </summary>
-    public int CursorPosition { get; }
-
-    /// <summary>
-    /// Formatting attributes for the pre-edit text.
-    /// </summary>
-    public IReadOnlyList<PreEditAttribute> Attributes { get; }
-
-    public PreEditChangedEventArgs(string preEditText, int cursorPosition, IReadOnlyList<PreEditAttribute>? attributes = null)
-    {
-        PreEditText = preEditText;
-        CursorPosition = cursorPosition;
-        Attributes = attributes ?? Array.Empty<PreEditAttribute>();
-    }
-}
-
-/// <summary>
-/// Represents formatting for a portion of pre-edit text.
-/// </summary>
-public class PreEditAttribute
-{
-    /// <summary>
-    /// Start position in the pre-edit text.
-    /// </summary>
-    public int Start { get; set; }
-
-    /// <summary>
-    /// Length of the attributed range.
-    /// </summary>
-    public int Length { get; set; }
-
-    /// <summary>
-    /// The attribute type.
-    /// </summary>
-    public PreEditAttributeType Type { get; set; }
-}
-
-/// <summary>
-/// Types of pre-edit text attributes.
-/// </summary>
-public enum PreEditAttributeType
-{
-    /// <summary>
-    /// Normal text (no special formatting).
-    /// </summary>
-    None,
-
-    /// <summary>
-    /// Underlined text (typical for composition).
-    /// </summary>
-    Underline,
-
-    /// <summary>
-    /// Highlighted/selected text.
-    /// </summary>
-    Highlighted,
-
-    /// <summary>
-    /// Reverse video (selected clause in some IMEs).
-    /// </summary>
-    Reverse
-}
-
-/// <summary>
-/// Key modifiers for IME processing.
-/// </summary>
-[Flags]
-public enum KeyModifiers
-{
-    None = 0,
-    Shift = 1 << 0,
-    Control = 1 << 1,
-    Alt = 1 << 2,
-    Super = 1 << 3,
-    CapsLock = 1 << 4,
-    NumLock = 1 << 5
-}