Adds opt-in support for applications that need to read piped data from stdin while still receiving interactive keyboard input

[HarryPehkonen]

Summary

Adds opt-in support for applications that need to read piped data from stdin while still receiving interactive keyboard input.

Changes

• Add HandlePipedInput(bool enable) method to ScreenInteractive
• Detects piped input and redirects stdin to /dev/tty when enabled
• POSIX-only feature with Windows/WASM stubs for compatibility
• Comprehensive test coverage
• Documentation in README

Usage

auto screen = ScreenInteractive::Fullscreen();
screen.HandlePipedInput(true);  // Enable before Loop()
screen.Loop(component);

Allows commands like cat data.txt | your_app to work with full keyboard interaction.

Backward Compatibility

- Feature is disabled by default - zero breaking changes
- Existing applications work exactly as before
- Cross-platform safe with appropriate guards

Testing

- Unit tests cover normal operation, edge cases, and failure modes
- Only runs on POSIX systems where feature is available

[ArthurSonzogni]

Thanks! I like having this builtin.
Nice description.

I will merge it as soon as I can 😉

[ArthurSonzogni]

Question

Would it make sense to enable this unconditionnally? I don't think anyone would ever need to opt-out of this.