# PR#81: The Demo Shows the Merge Chart

Version: patch

> **WARNING:** This document describes only the change applied in this PR.
> It may already be outdated once the next PR is merged.
> Historic PR documentation is not maintained along with new PRs; treat it as a snapshot.

## Related Links

- [werkregie PR#78](https://git.javagil.de/mi/werkregie/pulls/78) and [werkregie PR#80](https://git.javagil.de/mi/werkregie/pulls/80):
  the merge chart, with pull requests and changed lines.

## Problem

A visitor without the access token sees the demo; it has no merges, so the merge chart is missing there.
Werkregie PR#78 deferred this, as `Demo.snapshot` was above a Mutation-CRAP of 15;
werkregie PR#77 split it since.

## Non-Goals

- No real merges in the demo; the authors and their merges are invented.

## Specification

### Feature: the demo shows the merge chart

#### Scenario#81.01: the demo shows invented merges of a developer and of a coding agent

… so that a visitor sees what the merge chart shows.

- **Given** a visitor without the access token
- **When** the visitor opens the dashboard
- **Then** the merge chart of the Gitea "acme" shows a year of merges of "anna"
  and the last 8 weeks of merges of "coding-agent", with their changed lines

##### Verified by

- [DemoTest "the demo's Gitea merges a year of a developer and 8 weeks of a coding agent, oldest first"](../../dashboard/src/test/kotlin/de/hoennig/werkregie/dashboard/DemoTest.kt)
- manual check in the browser, see "Solution"

## Solution

- `Demo.merges` invents the merges by formula, so that the demo stays the same for each visitor:
  "anna" merges on two of three days of the last year, "coding-agent" 2 to 8 times a day in the last 8 weeks,
  each merge with 40 to 399 changed lines.

On 2026-10-14, a local server without the access token showed the demo with the merge tile of "Gitea acme":
30 merges of "anna" and 149 of "coding-agent" in the last 30 days, stacked, with mean and median of the lines.

## Release Notes

The public demo shows the merge chart, with invented merges of a developer and of a coding agent.

## Open Questions

None.