Drafting a PR description

Unlike the explanations above, this is the one generation feature whose output is meant to be published — it fills a real template from the branch's per-file summaries and its commit list, the same range the branch explanation reads. The field stays a normal, editable textarea afterwards: nothing is submitted until you actually publish the PR.

Generating a PR description from a branch's commits

"Generate title and description (LLM)" reads everything the selected branch changes compared to its base — the whole range, not one commit — and writes a description from it, template included when the repo has one. Only the form is exercised here, not an actual PR submission: that reaches GitHub directly and is out of scope the same way the Launchpad's PR mutations are.

Captured from the running app by this scenario.

Do this

1. Check out the feature/login branch
2. Open the create-PR form
3. Fill the create-PR form with head feature/login and base main
4. Click the generate-description button

You should see

• The PR description field contains feat: add fake thing

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This page is generated from apps/e2e/features/ai-pr-description.feature, the end-to-end test that drives the feature it describes.