> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zookooree.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# The Line

> Seven stations from work order to permanent operation: how a unit moves through the factory.

One line, three product families, seven stations. Every unit the factory builds — skill, tool, or agent — moves through the same sequence, with a gate between each pair of stations that the unit must pass before moving on.

```
WORK ORDER → DESIGN → ASSEMBLE → VERIFY → CERTIFY → DEPLOY → OPERATE
(intake)    (spec +   (compose   (the     (lot      (autonomy  (no exit:
             eval      from       paint    number)   dial)      telemetry,
             first)    parts)     shop)                          re-cert,
                                                                 recall)
```

## The walking tour

* **[Station 0 — Work Order](/stations/0-work-order).** The front door. Pull only: no unit enters the line without a named principal who wants it and will use it. Intent in, method out.
* **[Station 1 — Design](/stations/1-design).** Identity and spec are written here — and so is the eval, before the unit exists. The gauge is built before the part.
* **[Station 2 — Assemble](/stations/2-assemble).** The cheap station, kept cheap. Composition from standard parts, one unit at a time, zero manual fitting.
* **[Station 3 — Verify](/stations/3-verify).** The expensive building. Three fail-closed layers turn a built unit into an evidenced one. Per [Thesis 1](/six-theses/verification-first), the deepest capital investment in the plant.
* **[Station 4 — Certify](/stations/4-certify).** The lot number. Evidence becomes a signed, versioned, expiring [certificate](/certificates); the operator accepts the claim.
* **[Station 5 — Deploy](/stations/5-deploy).** The autonomy dial. Mechanical export of the certified unit, staged rollout, kill switch retained forever.
* **[Station 6 — Operate](/stations/6-operate).** Permanent. No exit gate, because no exit: telemetry, re-certification, recall, and the silence andon live here as long as the unit does.

## Two shapes worth noticing

**The line narrows toward the middle.** Assembly is nearly free and parallel; verification is scarce and paced. A factory that assembles 100 units a day and verifies 2 is a 2-a-day factory with a WIP problem, so flow control lives at the narrow point.

**The line never ends.** Deployment is transfer from a high-frequency inspection zone to a low-frequency one, not an exit ([Thesis 2](/six-theses/no-finished-goods)). The last station is a permanent residence.

The line's canonical definition is the factory's [standard work](/standard-work) — a germline document with an enforced changelog. This page is the tour; that document is the law.

## Self-audit

| Claim                                                              | Source                                                      |
| ------------------------------------------------------------------ | ----------------------------------------------------------- |
| One line, three families, seven stations; station diagram          | docs/factory-design.md:85–93                                |
| Pull only; named principal at intake                               | docs/factory-design.md:97                                   |
| Eval written before the unit at Design                             | docs/factory-design.md:107                                  |
| Verify is the deepest capital investment; 100-assembled/2-verified | docs/factory-design.md:26, 121                              |
| Operate is permanent; deployment is zone transfer, not exit        | docs/factory-design.md:154, workflows/production-line.md:78 |
| Standard work is germline with enforced changelog                  | workflows/production-line.md:95–99                          |