ci(release): alimenter les notes de release depuis [Unreleased] dans CHANGELOG.md

À chaque tag stable, la CI extrait la section [Unreleased], l'utilise
comme notes de release Forgejo, renomme la section avec la version et
la date, puis commite le CHANGELOG.md mis à jour sur main.

Les tags RC utilisent le contenu [Unreleased] pour les notes mais ne
modifient pas le fichier.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.forgejo/workflows/release.yml

@@ -6,7 +6,7 @@ name: Release
       - "**"
 
 permissions:
-  contents: read
+  contents: write
   releases: write
 
 jobs:
@@ -19,38 +19,59 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Build changelog
+      - name: Extract changelog and update CHANGELOG.md
         id: changelog
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
         shell: bash
         run: |
           set -euo pipefail
 
           current_tag="${GITHUB_REF_NAME}"
-          previous_stable_tag=""
+          today=$(date +%Y-%m-%d)
 
-          if previous_stable_tag="$(
-            git describe --tags --abbrev=0 \
-              --exclude '*-rc*' \
-              --exclude '*-beta*' \
-              --exclude '*-alpha*' \
-              "${current_tag}^" 2>/dev/null
-          )"; then
-            range="${previous_stable_tag}..${current_tag}"
-            {
-              printf '## Changelog\n\n'
-              printf 'Changes since `%s`.\n\n' "${previous_stable_tag}"
-              git log --reverse --pretty=format:'- %h %s' "${range}"
-              printf '\n'
-            } >CHANGELOG.md
-          else
-            {
-              printf '## Changelog\n\n'
-              printf 'Initial release.\n\n'
-              git log --reverse --pretty=format:'- %h %s' "${current_tag}"
-              printf '\n'
-            } >CHANGELOG.md
+          # Extract content of [Unreleased] section (non-empty lines)
+          release_notes=$(awk '/^## \[Unreleased\]/{found=1; next} found && /^## \[/{exit} found{print}' CHANGELOG.md | sed '/^[[:space:]]*$/d')
+
+          if [ -z "${release_notes}" ]; then
+            release_notes="Voir les commits pour le détail des changements."
           fi
 
+          printf '%s\n' "${release_notes}" > release_notes.md
+
+          # For stable releases: rename [Unreleased] and insert a new empty section
+          case "${current_tag}" in
+            *-rc*|*-beta*|*-alpha*)
+              echo "Pre-release tag — CHANGELOG.md non modifié"
+              ;;
+            *)
+              cat > /tmp/update_changelog.py << 'PYEOF'
+          import os
+
+          version = os.environ['VERSION']
+          today    = os.environ['TODAY']
+
+          with open('CHANGELOG.md', 'r') as f:
+              content = f.read()
+
+          content = content.replace('## [Unreleased]', f'## [{version}] — {today}', 1)
+          content = content.replace('# Changelog\n', '# Changelog\n\n## [Unreleased]\n', 1)
+
+          with open('CHANGELOG.md', 'w') as f:
+              f.write(content)
+          PYEOF
+
+              VERSION="${current_tag}" TODAY="${today}" python3 /tmp/update_changelog.py
+
+              git config user.name "CI"
+              git config user.email "ci@forge.lclr.dev"
+              git remote set-url origin "https://x-token:${GITEA_TOKEN}@${GITHUB_SERVER_URL#https://}/${GITHUB_REPOSITORY}.git"
+              git add CHANGELOG.md
+              git commit -m "chore(changelog): release ${current_tag}"
+              git push origin HEAD:main
+              ;;
+          esac
+
       - name: Create or update release
         env:
           GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
@@ -73,7 +94,7 @@ jobs:
             sed ':a;N;$!ba;s/\\/\\\\/g;s/"/\\"/g;s/\t/\\t/g;s/\r//g;s/\n/\\n/g'
           }
 
-          body="$(json_escape < CHANGELOG.md)"
+          body="$(json_escape < release_notes.md)"
           payload="$(printf '{"tag_name":"%s","name":"%s","body":"%s","draft":false,"prerelease":%s}' \
             "${current_tag}" \
             "${current_tag}" \

CHANGELOG.md

@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [v1.11.0] — 2026-05-12
 
 ### Nouvelles fonctionnalités