ci: release through the changelog release workflows

.github/workflows/self-release.yml

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+name: Self-release
+# Releases this repository through the ci-workflows changelog release workflows: a dispatch opens
+# the release pull request, and its merge tags v<version> and moves v<major>.
+
+on:
+  workflow_dispatch:
+    inputs:
+      bump:
+        description: 'Override the bump derived from the commits'
+        type: choice
+        options: [derived, major, minor, patch]
+        default: derived
+      runner:
+        description: 'Runner label(s) to run the job on, e.g. "ubuntu-latest" or "self-hosted".'
+        default: 'ubuntu-latest'
+        type: string
+  pull_request:
+    types: [closed]
+
+jobs:
+  prepare:
+    if: github.event_name == 'workflow_dispatch'
+    uses: Duatic/ci-workflows/.github/workflows/reusable_prepare_changelog_release.yml@v1
+    with:
+      bump: ${{ inputs.bump }}
+      runner: ${{ inputs.runner }}
+    secrets: inherit
+
+  tag:
+    if: github.event_name == 'pull_request' && github.event.pull_request.merged
+    permissions:
+      contents: write
+    uses: Duatic/ci-workflows/.github/workflows/reusable_changelog_release_tag.yml@v1

CHANGELOG.rst

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+^^^^^^^^^
+Changelog
+^^^^^^^^^
+
+1.8.0 (2026-10-27)
+------------------
+* fix(archive): keep each delivery in its channel, one writer at a time (#25)
+
+1.7.0 (2026-10-27)
+------------------
+* feat(archive)!: stable, edge and nightly channels, kept apart (#24)
+
+1.6.0 (2026-10-22)
+------------------
+* feat(archive): publish every ROS distro, each Ubuntu release in its own suite (#23)
+
+1.5.0 (2026-10-22)
+------------------
+* feat(builder): build humble packages on jammy (#22)
+
+1.4.0 (2026-10-21)
+------------------
+* No changes.
+
+1.3.0 (2026-10-21)
+------------------
+* feat(packaging): publish a package's source beside it when it declares so (#21)
+* fix(builder): record the source commit and keep a root package's changelog (#20)
+
+1.2.0 (2026-10-18)
+------------------
+* feat(packaging)!: refuse open packages that depend on gated ones (#19)
+
+1.1.0 (2026-10-14)
+------------------
+* feat(pre-commit): enforce LF line endings and space indentation (#17)
+* feat(pre-commit): bump actionlint to v1.7.12 for schedule timezones (#18)
+
+1.0.3 (2026-10-05)
+------------------
+* fix(packaging): publish signed archives with a real archive key (#16)
+* ci: add title-check to pull request validation (#15)
+
+1.0.2 (2026-09-11)
+------------------
+* fix: set debian frontend to non interactive (#14)
+
+1.0.1 (2026-09-08)
+------------------
+* fix: derive Ubuntu version from ROS distro (#12)
+
+1.0.0 (2026-09-03)
+------------------
+* ci: add release workflow for the repo (#11)
+* chore: tidy up repo before public release (#10)
+* chore: adapt scripts to support upcoming changes in changelogs (#9)
+* ci: check the tooling on the paths each job covers (#8)
+* test(packaging): add fixtures, probes and install checks (#7)
+* feat(packaging): publish one signed apt archive root per entitlement (#6)
+* feat(packaging): derive a release set and build it in dependency order (#5)
+* feat(packaging): build a ROS package into a signed deb (#4)
+* feat(release): check a pull request is consistent about its release (#2)
+* chore: initialize README and .gitignore for the repo (#1)
+* Initial commit