Parent: #77

Summary

Final integration: wire up the new IPlatformConsole abstraction into TerminaApplication and deprecate/remove the old ConsoleInputSource.

Files to Modify

• src/Termina/TerminaApplication.cs
• src/Termina/Terminal/AnsiTerminal.cs
• src/Termina/Input/ConsoleInputSource.cs (deprecate or remove)

Files to Create

• src/Termina/Input/PlatformInputSource.cs

Changes

TerminaApplication

public class TerminaApplication
{
    private readonly IPlatformConsole _console;

    public TerminaApplication()
    {
        _console = PlatformConsoleFactory.Create();
        _console.Initialize();
    }

    // Use _console.Resized observable instead of polling
    // Use new PlatformInputSource instead of ConsoleInputSource
}

PlatformInputSource

public sealed class PlatformInputSource : IInputSource
{
    private readonly IPlatformConsole _console;

    public async Task RunAsync(ChannelWriter<object> writer, CancellationToken ct)
    {
        _console.Resized.Subscribe(size =>
            writer.TryWrite(new ResizeEvent(size.Width, size.Height)));

        while (!ct.IsCancellationRequested)
        {
            var input = await _console.ReadInputAsync(ct);
            if (input is KeyEvent ke)
                await writer.WriteAsync(new KeyPressed(ke.KeyInfo), ct);
        }
    }
}

AnsiTerminal

Consider delegating output to IPlatformConsole.Write()/Flush() for consistency.

Migration Path

1. Add [Obsolete] attribute to ConsoleInputSource
2. Update demos to use new system
3. Ensure all tests pass
4. Remove in next major version (or keep as internal fallback)

Acceptance Criteria

• TerminaApplication uses IPlatformConsole
• PlatformInputSource replaces ConsoleInputSource
• All existing demos work
• All tests pass
• ConsoleInputSource marked obsolete
• No breaking API changes for external consumers