fix(ci): simplify release workflow, use FORGEJO_REF_NAME

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

.forgejo/workflows/release.yml

@@ -11,10 +11,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Extract version from tag
-        id: version
-        run: echo "VERSION=${GITEA_REF_NAME#v}" >> "$GITEA_OUTPUT"
-
       - name: Create package archive
         run: |
           zip -r package.zip . \
@@ -38,4 +34,4 @@ jobs:
         run: |
           curl --fail --user "${{ secrets.REGISTRY_USER }}:${{ secrets.REGISTRY_TOKEN }}" \
             --upload-file package.zip \
-            "https://forge.lthn.ai/api/packages/core/composer?version=${{ steps.version.outputs.VERSION }}"
+            "https://forge.lthn.ai/api/packages/core/composer?version=${FORGEJO_REF_NAME#v}"