BREP_app 0.4.0

The BREP CAD application: an eframe (egui + wgpu) host that draws the brep-render 3D engine into an egui frame — native + wasm from one codebase.
Documentation 
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//! Hex colors used by app forms, badges, and metadata swatches.

/// Parse exactly `#rrggbb`; callers decide whether to trim whitespace.
pub(crate) fn parse_hex_color(value: &str) -> Option<egui::Color32> {
    let digits = value.strip_prefix('#')?;
    if digits.len() != 6 || !digits.bytes().all(|byte| byte.is_ascii_hexdigit()) {
        return None;
    }
    let rgb = u32::from_str_radix(digits, 16).ok()?;
    Some(egui::Color32::from_rgb(
        (rgb >> 16) as u8,
        (rgb >> 8) as u8,
        rgb as u8,
    ))
}

pub(crate) fn rgb_to_hex(rgb: [u8; 3]) -> String {
    format!("#{:02x}{:02x}{:02x}", rgb[0], rgb[1], rgb[2])
}

// BREP private tests: 21fd460a280bf9c5