Initial samples: TodoApp and ShellDemo

Two sample applications demonstrating OpenMaui Linux:

TodoApp:
- Full task manager with NavigationPage
- CollectionView with XAML data binding
- DisplayAlert dialogs
- Grid layouts with star sizing

ShellDemo:
- Comprehensive control showcase
- Shell with flyout navigation
- All core MAUI controls demonstrated
- Real-time event logging

Both samples reference OpenMaui.Controls.Linux via NuGet.

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

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

ShellDemo/README.md

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+# ShellDemo Sample
+
+A comprehensive control showcase application demonstrating all OpenMaui Linux controls with Shell navigation and flyout menu.
+
+## Features
+
+- **Shell Navigation** - Flyout menu with multiple pages
+- **Route-Based Navigation** - Push navigation with registered routes
+- **All Core Controls** - Button, Entry, Editor, CheckBox, Switch, Slider, Picker, etc.
+- **CollectionView** - Lists with selection and data binding
+- **Progress Indicators** - ProgressBar and ActivityIndicator with animations
+- **Grid Layouts** - Complex multi-column/row layouts
+- **Event Logging** - Real-time event feedback panel
+
+## Pages
+
+| Page | Controls Demonstrated |
+|------|----------------------|
+| **Home** | Welcome screen, navigation overview |
+| **Buttons** | Button styles, colors, states, click/press/release events |
+| **Text Input** | Entry, Editor, SearchBar, password fields, keyboard types |
+| **Selection** | CheckBox, Switch, Slider with colors and states |
+| **Pickers** | Picker, DatePicker, TimePicker with styling |
+| **Lists** | CollectionView with selection, custom items |
+| **Progress** | ProgressBar, ActivityIndicator, animated demos |
+| **Grids** | Grid layouts with row/column definitions |
+| **About** | App information |
+
+## Architecture
+
+```
+ShellDemo/
+├── App.cs                      # AppShell definition with flyout
+├── Program.cs                  # Linux platform bootstrap
+├── MauiProgram.cs              # MAUI app builder
+└── Pages/
+    ├── HomePage.cs             # Welcome page
+    ├── ButtonsPage.cs          # Button demonstrations
+    ├── TextInputPage.cs        # Entry, Editor, SearchBar
+    ├── SelectionPage.cs        # CheckBox, Switch, Slider
+    ├── PickersPage.cs          # Picker, DatePicker, TimePicker
+    ├── ListsPage.cs            # CollectionView demos
+    ├── ProgressPage.cs         # ProgressBar, ActivityIndicator
+    ├── GridsPage.cs            # Grid layout demos
+    ├── DetailPage.cs           # Push navigation target
+    └── AboutPage.cs            # About information
+```
+
+## Shell Configuration
+
+```csharp
+public class AppShell : Shell
+{
+    public AppShell()
+    {
+        FlyoutBehavior = FlyoutBehavior.Flyout;
+        Title = "OpenMaui Controls Demo";
+
+        // Register routes for push navigation
+        Routing.RegisterRoute("detail", typeof(DetailPage));
+
+        // Add flyout items
+        Items.Add(CreateFlyoutItem("Home", typeof(HomePage)));
+        Items.Add(CreateFlyoutItem("Buttons", typeof(ButtonsPage)));
+        // ...more items
+    }
+}
+```
+
+## Control Demonstrations
+
+### Buttons Page
+- Default, styled, and transparent buttons
+- Color variations (Primary, Success, Warning, Danger)
+- Enabled/disabled state toggling
+- Wide, tall, and round button shapes
+- Pressed, clicked, released event handling
+
+### Text Input Page
+- Entry with placeholder and text change events
+- Password entry with hidden text
+- Email keyboard type
+- SearchBar with search button
+- Multi-line Editor
+- Keyboard shortcuts guide
+
+### Selection Page
+- CheckBox with colors and disabled state
+- Switch with OnColor customization
+- Slider with min/max range and track colors
+
+### Pickers Page
+- Picker with items and selection events
+- DatePicker with date range limits
+- TimePicker with time selection
+- Styled pickers with custom colors
+
+### Lists Page
+- CollectionView with string items
+- CollectionView with custom data types (ColorItem, ContactItem)
+- Selection handling and event feedback
+
+### Progress Page
+- ProgressBar at various percentages
+- Colored progress bars
+- ActivityIndicator running/stopped states
+- Colored activity indicators
+- Interactive slider-controlled progress
+- Animated progress simulation
+
+## Building and Running
+
+```bash
+# From the maui-linux-push directory
+cd samples/ShellDemo
+dotnet publish -c Release -r linux-arm64
+
+# Run on Linux
+./bin/Release/net9.0/linux-arm64/publish/ShellDemo
+```
+
+## Event Logging
+
+Each page features an event log panel that displays control interactions in real-time:
+
+```
+[14:32:15] 3. Button clicked: Primary
+[14:32:12] 2. Slider value: 75
+[14:32:08] 1. CheckBox: Checked
+```
+
+## Controls Reference
+
+| Control | Properties Demonstrated |
+|---------|------------------------|
+| Button | Text, BackgroundColor, TextColor, CornerRadius, IsEnabled, WidthRequest, HeightRequest |
+| Entry | Placeholder, Text, IsPassword, Keyboard, FontSize |
+| Editor | Placeholder, Text, HeightRequest |
+| SearchBar | Placeholder, Text, SearchButtonPressed |
+| CheckBox | IsChecked, Color, IsEnabled |
+| Switch | IsToggled, OnColor, IsEnabled |
+| Slider | Minimum, Maximum, Value, MinimumTrackColor, MaximumTrackColor, ThumbColor |
+| Picker | Title, Items, SelectedIndex, TextColor, TitleColor |
+| DatePicker | Date, MinimumDate, MaximumDate, TextColor |
+| TimePicker | Time, TextColor |
+| CollectionView | ItemsSource, SelectionMode, SelectionChanged, HeightRequest |
+| ProgressBar | Progress, ProgressColor |
+| ActivityIndicator | IsRunning, Color |
+| Label | Text, FontSize, FontAttributes, TextColor |
+| Frame | CornerRadius, Padding, BackgroundColor |
+| Grid | RowDefinitions, ColumnDefinitions, RowSpacing, ColumnSpacing |
+| StackLayout | Spacing, Padding, Orientation |
+| ScrollView | Content scrolling |
+
+## License
+
+MIT License - See repository root for details.