Kanban: Visual Workflow

Kanban (看板) means “signboard” - the practice of making work visible so teams can manage flow and limit work in progress.

Core Principle

Make the invisible visible. Limit work in progress to maximize throughput.

In Batuta, Kanban manifests as real-time dashboards that surface pipeline state, stack health, and quality metrics at a glance.

Kanban in Batuta

Pipeline State Visibility

# Show current pipeline state across all phases
batuta status

# Phase      | Status     | Duration
# -----------|------------|----------
# Analysis   | Complete   | 1.2s
# Transpile  | Running    | 3.4s (depyler)
# Optimize   | Pending    | -
# Validate   | Pending    | -
# Build      | Pending    | -

Each phase of the 5-phase pipeline is a Kanban column. Work items flow left to right, and Jidoka stops the line if any phase fails.

Stack Quality Matrix

# TUI dashboard showing all stack components
batuta stack status

# Component   | Version | Health | Coverage | TDG
# ------------|---------|--------|----------|-----
# trueno      | 0.16.x  | Green  | 95%      | A
# aprender    | 0.27.x  | Green  | 95%      | A-
# realizar    | 0.8.x   | Yellow | 91%      | B+
# repartir    | 2.0.x   | Green  | 93%      | A

WIP Limits

Batuta enforces WIP limits to prevent overloading any stage:

Pull-Based Execution

#![allow(unused)]
fn main() {
// Kanban: downstream phases pull work when ready
fn run_pipeline(config: &Config) -> Result<Report> {
    let analysis = analyze(config)?;        // Phase 1
    let transpiled = transpile(&analysis)?;  // Phase 2 pulls from 1
    let optimized = optimize(&transpiled)?;  // Phase 3 pulls from 2
    let validated = validate(&optimized)?;   // Phase 4 pulls from 3
    build(&validated)                        // Phase 5 pulls from 4
}
}

Benefits

1. Flow visibility - See bottlenecks before they stall the pipeline
2. WIP control - Prevent resource exhaustion from over-parallelism
3. Pull scheduling - Each phase processes work only when capacity allows
4. Stack awareness - One dashboard for the entire Sovereign AI Stack

Board Layout

| Backlog | Analysis | Transpile | Optimize | Validate | Done |
|---------|----------|-----------|----------|----------|------|
|         | app.py   |           |          |          |      |
|         |          | lib.c     |          |          |      |
|         |          |           |          | util.sh  |      |
| WIP: -  | WIP: 2/4 | WIP: 1/4 | WIP: 0/2 | WIP: 1/2 |      |

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