rnk 0.19.1

A React-like declarative terminal UI framework for Rust, inspired by Ink and Bubbletea
Documentation 
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//! Exact reproduction of sage-cli UI layout
use rnk::prelude::Box as RnkBox;
use rnk::prelude::*;

fn main() {
    let term_width = 120u16;
    let term_height = 30u16;

    // Welcome message (exactly as in rnk_app.rs)
    let welcome = RnkBox::new()
        .flex_direction(FlexDirection::Column)
        .child(
            Text::new("Sage Agent")
                .color(Color::Cyan)
                .bold()
                .into_element(),
        )
        .child(
            Text::new("Rust-based LLM Agent for software engineering tasks")
                .dim()
                .into_element(),
        )
        .child(Newline::new().into_element())
        .child(
            Text::new("Type a message to get started, or use /help for commands")
                .dim()
                .into_element(),
        )
        .into_element();

    // Bottom area
    let separator = "─".repeat(term_width as usize);
    let bottom = RnkBox::new()
        .flex_direction(FlexDirection::Column)
        .child(Text::new(&separator).dim().into_element())
        .child(
            RnkBox::new()
                .flex_direction(FlexDirection::Row)
                .child(Text::new("❯ ").color(Color::Yellow).bold().into_element())
                .child(Text::new("Type your message...").into_element())
                .into_element(),
        )
        .child(
            RnkBox::new()
                .flex_direction(FlexDirection::Row)
                .child(Text::new("▸▸").into_element())
                .child(Text::new(" permissions required").dim().into_element())
                .into_element(),
        )
        .into_element();

    // Full layout - EXACTLY as in render_ui after the fix
    let root = RnkBox::new()
        .flex_direction(FlexDirection::Column)
        .width(term_width as i32)
        .height(term_height as i32)
        .child(
            RnkBox::new()
                .flex_direction(FlexDirection::Column)
                .flex_grow(1.0) // This might be the problem!
                .child(welcome)
                .into_element(),
        )
        .child(bottom)
        .into_element();

    println!("=== Rendered Output ===");
    let output = rnk::render_to_string(&root, term_width);
    for (i, line) in output.lines().enumerate() {
        let stripped = strip_ansi(line);
        let first_non_space = stripped.chars().position(|c| c != ' ').unwrap_or(0);
        if first_non_space > 0 || !stripped.trim().is_empty() {
            println!("{:3}: col={:3} |{}|", i, first_non_space, stripped);
        }
    }
}

fn strip_ansi(s: &str) -> String {
    let mut result = String::new();
    let mut in_escape = false;
    for c in s.chars() {
        if c == '\x1b' {
            in_escape = true;
        } else if in_escape {
            if c.is_ascii_alphabetic() {
                in_escape = false;
            }
        } else {
            result.push(c);
        }
    }
    result
}