Fix layout rendering, text wrapping, and scrollbar issues

- LinuxViewRenderer: Remove redundant child rendering that caused "View already has a parent" errors
- SkiaLabel: Consider LineBreakMode.WordWrap for multi-line measurement and rendering
- SkiaScrollView: Update ContentSize in OnDraw with properly constrained measurement
- SkiaShell: Account for padding in MeasureOverride (consistent with ArrangeOverride)
- Version bump to 1.0.0-preview.4

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

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

Views/SkiaLabel.cs

@@ -429,9 +429,10 @@ public class SkiaLabel : SkiaView
             bounds.Bottom - Padding.Bottom);
 
         // Handle single line vs multiline
-        // Use DrawSingleLine for normal labels (MaxLines <= 1 or unlimited) without newlines
-        // Use DrawMultiLineWithWrapping only when MaxLines > 1 (word wrap needed) or text has newlines
-        bool needsMultiLine = MaxLines > 1 || Text.Contains('\n');
+        // Use DrawMultiLineWithWrapping when: MaxLines > 1, text has newlines, OR WordWrap is enabled
+        bool needsMultiLine = MaxLines > 1 || Text.Contains('\n') ||
+                              LineBreakMode == LineBreakMode.WordWrap ||
+                              LineBreakMode == LineBreakMode.CharacterWrap;
         if (needsMultiLine)
         {
             DrawMultiLineWithWrapping(canvas, paint, font, contentBounds);
@@ -771,8 +772,10 @@ public class SkiaLabel : SkiaView
         using var font = new SKFont(typeface, FontSize);
         using var paint = new SKPaint(font);
 
-        // Use same logic as OnDraw: multiline only when MaxLines > 1 or text has newlines
-        bool needsMultiLine = MaxLines > 1 || Text.Contains('\n');
+        // Use multiline when: MaxLines > 1, text has newlines, OR WordWrap is enabled
+        bool needsMultiLine = MaxLines > 1 || Text.Contains('\n') ||
+                              LineBreakMode == LineBreakMode.WordWrap ||
+                              LineBreakMode == LineBreakMode.CharacterWrap;
         if (!needsMultiLine)
         {
             var textBounds = new SKRect();

Views/SkiaScrollView.cs

@@ -268,8 +268,16 @@ public class SkiaScrollView : SkiaView
         if (_content != null)
         {
             // Ensure content is measured and arranged
-            var availableSize = new SKSize(bounds.Width, float.PositiveInfinity);
-            _content.Measure(availableSize);
+            // Account for vertical scrollbar width to prevent horizontal scrollbar from appearing
+            var effectiveWidth = bounds.Width;
+            if (Orientation != ScrollOrientation.Horizontal && VerticalScrollBarVisibility != ScrollBarVisibility.Never)
+            {
+                // Reserve space for vertical scrollbar if content might be taller than viewport
+                effectiveWidth -= ScrollBarWidth;
+            }
+            var availableSize = new SKSize(effectiveWidth, float.PositiveInfinity);
+            // Update ContentSize with the properly constrained measurement
+            ContentSize = _content.Measure(availableSize);
 
             // Apply content's margin
             var margin = _content.Margin;
@@ -669,12 +677,18 @@ public class SkiaScrollView : SkiaView
                 case ScrollOrientation.Both:
                     // For Both: first measure with viewport width to get responsive layout
                     // Content can still exceed viewport if it has minimum width constraints
+                    // Reserve space for vertical scrollbar to prevent horizontal scrollbar
                     contentWidth = float.IsInfinity(availableSize.Width) ? 800f : availableSize.Width;
+                    if (VerticalScrollBarVisibility != ScrollBarVisibility.Never)
+                        contentWidth -= ScrollBarWidth;
                     contentHeight = float.PositiveInfinity;
                     break;
                 case ScrollOrientation.Vertical:
                 default:
+                    // Reserve space for vertical scrollbar to prevent horizontal scrollbar
                     contentWidth = float.IsInfinity(availableSize.Width) ? 800f : availableSize.Width;
+                    if (VerticalScrollBarVisibility != ScrollBarVisibility.Never)
+                        contentWidth -= ScrollBarWidth;
                     contentHeight = float.PositiveInfinity;
                     break;
             }

Views/SkiaShell.cs

@@ -287,14 +287,14 @@ public class SkiaShell : SkiaLayoutView
 
     protected override SKSize MeasureOverride(SKSize availableSize)
     {
-        // Measure current content
+        // Measure current content with padding accounted for (consistent with ArrangeOverride)
         if (_currentContent != null)
         {
             float contentTop = NavBarIsVisible ? NavBarHeight : 0;
             float contentBottom = TabBarIsVisible ? TabBarHeight : 0;
             var contentSize = new SKSize(
-                availableSize.Width,
-                availableSize.Height - contentTop - contentBottom);
+                availableSize.Width - (float)Padding.Left - (float)Padding.Right,
+                availableSize.Height - contentTop - contentBottom - (float)Padding.Top - (float)Padding.Bottom);
             _currentContent.Measure(contentSize);
         }