Implement next-gen modules: chrs-code-edit (Git), chrs-discovery (LibP2P), and chrs-observer (TUI)

chrs-observer/Cargo.toml

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+[package]
+name = "chrs-observer"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+ratatui = "0.26"
+crossterm = "0.27"
+tokio = { version = "1.0", features = ["full"] }
+chrs-mail = { path = "../chrs-mail" }
+chrs-bubble = { path = "../chrs-bubble" }
+chrs-backbeat = { path = "../chrs-backbeat" }
+chrono = "0.4"
+serde_json = "1.0"

chrs-observer/src/main.rs

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+//! chrs-observer: Real-time TUI dashboard for CHORUS.
+
+use ratatui::{
+    backend::CrosstermBackend,
+    widgets::{Block, Borders, Paragraph, List, ListItem},
+    layout::{Layout, Constraint, Direction},
+    Terminal,
+};
+use crossterm::{
+    event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
+    execute,
+    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
+};
+use std::{error::Error, io, time::{Duration, Instant}};
+
+struct App {
+    pulse_bpm: u32,
+    beat_index: u32,
+    logs: Vec<String>,
+}
+
+impl App {
+    fn new() -> App {
+        App {
+            pulse_bpm: 30,
+            beat_index: 0,
+            logs: vec!["[OBSERVER] Initialized.".into()],
+        }
+    }
+}
+
+fn main() -> Result<(), Box<dyn Error>> {
+    // Setup terminal
+    enable_raw_mode()?;
+    let mut stdout = io::stdout();
+    execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
+    let backend = CrosstermBackend::new(stdout);
+    let mut terminal = Terminal::new(backend)?;
+
+    // Create app and run loop
+    let app = App::new();
+    let res = run_app(&mut terminal, app);
+
+    // Restore terminal
+    disable_raw_mode()?;
+    execute!(
+        terminal.backend_mut(),
+        LeaveAlternateScreen,
+        DisableMouseCapture
+    )?;
+    terminal.show_cursor()?;
+
+    if let Err(err) = res {
+        println!("{:?}", err)
+    }
+
+    Ok(())
+}
+
+fn run_app<B: ratatui::backend::Backend>(terminal: &mut Terminal<B>, mut app: App) -> io::Result<()> {
+    let tick_rate = Duration::from_millis(250);
+    let mut last_tick = Instant::now();
+    loop {
+        terminal.draw(|f| ui(f, &app))?;
+
+        let timeout = tick_rate
+            .checked_sub(last_tick.elapsed())
+            .unwrap_or_else(|| Duration::from_secs(0));
+        if crossterm::event::poll(timeout)? {
+            if let Event::Key(key) = event::read()? {
+                if let KeyCode::Char('q') = key.code {
+                    return Ok(());
+                }
+            }
+        }
+        if last_tick.elapsed() >= tick_rate {
+            // In a real app, we would update beat_index from chrs-backbeat here
+            last_tick = Instant::now();
+        }
+    }
+}
+
+fn ui(f: &mut ratatui::Frame, app: &App) {
+    let chunks = Layout::default()
+        .direction(Direction::Vertical)
+        .margin(1)
+        .constraints(
+            [
+                Constraint::Length(3),
+                Constraint::Min(0),
+            ]
+            .as_ref(),
+        )
+        .split(f.size());
+
+    let header = Paragraph::new(format!("CHORUS CLUSTER DASHBOARD | BPM: {} | BEAT: {}", app.pulse_bpm, app.beat_index))
+        .block(Block::default().borders(Borders::ALL).title("Pulse"));
+    f.render_widget(header, chunks[0]);
+
+    let logs: Vec<ListItem> = app.logs.iter().rev().map(|s| ListItem::new(s.as_str())).collect();
+    let log_list = List::new(logs).block(Block::default().borders(Borders::ALL).title("Live Events"));
+    f.render_widget(log_list, chunks[1]);
+}