Feat: WIP terse code documentation

crates/ratatui/src/waveform.rs

@@ -1,3 +1,5 @@
+//! Filled waveform display using braille characters.
+
 use crate::scope::Orientation;
 use crate::theme;
 use ratatui::buffer::Buffer;
@@ -10,6 +12,7 @@ thread_local! {
     static PATTERNS: RefCell<Vec<u8>> = const { RefCell::new(Vec::new()) };
 }
 
+/// Filled waveform renderer using braille dot plotting.
 pub struct Waveform<'a> {
     data: &'a [f32],
     orientation: Orientation,