Formalise the PR-flow conventions while we install the PR-flow itself.
.gitea/pull_request_template.md auto-populates the PR body in Gitea
with five sections: Summary / Motivation / Implementation notes /
Verification (with CI-gate checkboxes + ADR/diagram update flags) /
Related. Sections can be left blank when irrelevant; the template
guides without adding ceremony. Header HTML comment reminds the
contributor of the PR title format and links to the full convention.
docs/development.md §5 (Conventional commit cycle) gains a 'PR
conventions' subsection that:
- explains why the PR title format matters (squash-merge subject on
main, validated by commitlint in the CI 'commits' job)
- separates feature-branch commit hygiene (exploratory OK) from PR
title hygiene (must conform)
- documents the type vocabulary (feat/fix/docs/style/refactor/perf/
test/build/ci/chore/revert)
- proposes an optional scope vocabulary (apps, libs, cross-cutting
domains like decisions/docs/ci/deps)
- describes the body template
No new ADR. The PR title format is derived from ADR-0007 (Conventional
Commits at the commit-msg layer) plus ADR-0015 (squash-merge means PR
title becomes the commit subject on main). The body template is
tactical guidance, not architectural.