ci(release): corriger la construction de l'URL git pour le push

GITHUB_SERVER_URL vaut http://forgejo:3000 (réseau interne Docker).
Extraire scheme et host séparément pour reconstruire l'URL correctement.

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

.forgejo/workflows/release.yml

@@ -12,6 +12,7 @@ permissions:
 jobs:
   release:
     runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/')
 
     steps:
       - name: Checkout repository
@@ -59,7 +60,9 @@ jobs:
 
               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://}/${GITHUB_REPOSITORY}.git"
+              scheme="${GITHUB_SERVER_URL%%://*}"
+              host="${GITHUB_SERVER_URL#*://}"
+              git remote set-url origin "${scheme}://x-token:${GITEA_TOKEN}@${host}/${GITHUB_REPOSITORY}.git"
               git add CHANGELOG.md
               git commit -m "chore(changelog): release ${current_tag}"
               git push origin HEAD:main