kaizen-cli 0.1.44

Distributable agent observability: real-time-tailable sessions, agile-style retros, and repo-level improvement (Cursor, Claude Code, Codex). SQLite, redact before any sync you enable.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130

// SPDX-License-Identifier: AGPL-3.0-or-later

use crate::ui::theme;
use crate::visualization::VisualizationReport;
use ratatui::{
    layout::{Constraint, Direction, Layout, Rect},
    style::{Color, Style},
    text::{Line, Span},
    widgets::{Block, Borders, Paragraph, Sparkline},
};

pub fn render_dashboard(f: &mut ratatui::Frame, report: Option<&VisualizationReport>, area: Rect) {
    let rows = Layout::default()
        .direction(Direction::Vertical)
        .constraints([Constraint::Length(3), Constraint::Min(3)])
        .split(area);
    let top = Layout::default()
        .direction(Direction::Horizontal)
        .constraints([Constraint::Percentage(25); 4])
        .split(rows[0]);
    kpis(report)
        .into_iter()
        .zip(top.iter())
        .for_each(|(text, rect)| render_card(f, &text, *rect));
    render_activity(f, report, rows[1]);
}

fn render_card(f: &mut ratatui::Frame, text: &str, area: Rect) {
    let block = Block::default()
        .borders(Borders::ALL)
        .border_style(Style::default().fg(theme::BORDER_INACTIVE));
    f.render_widget(Paragraph::new(text.to_string()).block(block), area);
}

fn render_activity(f: &mut ratatui::Frame, report: Option<&VisualizationReport>, area: Rect) {
    let data: Vec<u64> = report
        .map(|r| r.activity.day_bins.iter().map(|b| b.event_count).collect())
        .unwrap_or_default();
    let block = Block::default()
        .title(activity_title(report))
        .borders(Borders::ALL)
        .border_style(Style::default().fg(theme::BORDER_INACTIVE));
    f.render_widget(
        Sparkline::default()
            .block(block)
            .data(&data)
            .style(Style::default().fg(Color::Cyan)),
        area,
    );
}

fn activity_title(report: Option<&VisualizationReport>) -> Line<'static> {
    let quality = report
        .map(|r| format!(" quality {:.0}% cost", r.quality.cost_coverage_pct))
        .unwrap_or_else(|| " loading".to_string());
    Line::from(vec![
        Span::raw("Activity"),
        Span::styled(quality, Style::default().fg(Color::Gray)),
    ])
}

fn kpis(report: Option<&VisualizationReport>) -> [String; 4] {
    report.map(kpi_values).unwrap_or([
        "Sessions\n-".into(),
        "Cost\n-".into(),
        "Tokens\n-".into(),
        "Errors\n-".into(),
    ])
}

fn kpi_values(report: &VisualizationReport) -> [String; 4] {
    [
        format!("Sessions\n{}", report.totals.session_count),
        format!(
            "Cost\n${:.4}",
            report.totals.cost_usd_e6 as f64 / 1_000_000.0
        ),
        format!("Tokens\n{}", compact(report.totals.tokens.total)),
        format!("Errors\n{}", report.totals.error_count),
    ]
}

fn compact(n: u64) -> String {
    match n {
        n if n >= 1_000_000 => format!("{:.1}m", n as f64 / 1_000_000.0),
        n if n >= 1_000 => format!("{:.1}k", n as f64 / 1_000.0),
        n => n.to_string(),
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::visualization::{TokenTotals, VisualizationTotals};

    #[test]
    fn kpis_handle_empty_report() {
        assert_eq!(kpis(None)[0], "Sessions\n-");
    }

    #[test]
    fn kpis_format_report_totals() {
        let report = report(42, 12_345);
        assert_eq!(kpis(Some(&report))[0], "Sessions\n42");
        assert_eq!(kpis(Some(&report))[2], "Tokens\n12.3k");
    }

    #[test]
    fn render_smoke_handles_empty_report() {
        let backend = ratatui::backend::TestBackend::new(80, 10);
        let mut terminal = ratatui::Terminal::new(backend).unwrap();
        terminal
            .draw(|f| render_dashboard(f, None, f.area()))
            .unwrap();
    }

    fn report(sessions: u64, tokens: u64) -> VisualizationReport {
        VisualizationReport {
            totals: VisualizationTotals {
                session_count: sessions,
                tokens: TokenTotals {
                    total: tokens,
                    ..TokenTotals::default()
                },
                ..VisualizationTotals::default()
            },
            ..VisualizationReport::default()
        }
    }
}