fix: improve CI workflows and README documentation

.gitea/workflows/release.yml

@@ -34,10 +34,16 @@ jobs:
         id: version
         run: |
           if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
-            echo "version=${{ github.event.inputs.version }}" >> $GITHUB_OUTPUT
+            VERSION="${{ github.event.inputs.version }}"
           else
-            echo "version=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
+            VERSION="${GITHUB_REF#refs/tags/}"
           fi
+          if [[ -z "$VERSION" ]]; then
+            echo "::error::VERSION is empty. Provide a version via workflow_dispatch input or push a tag."
+            exit 1
+          fi
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+          echo "Releasing version: $VERSION"
 
       - name: Extract metadata for Playout
         id: meta-playout
@@ -96,7 +102,7 @@ jobs:
 
       - name: Create Release on Gitea
         run: |
-          curl -X POST "$CI_SERVER_URL/api/v1/repos/$CI_REPO_OWNER/$CI_REPO_NAME/releases" \
+          curl -X POST "https://git.allucanget.biz/api/v1/repos/zwitschi/linearvoid/releases" \
             -H "Authorization: token ${{ secrets.CI_REGISTRY_TOKEN }}" \
             -H "Content-Type: application/json" \
             -d "{\"tag_name\":\"${{ steps.version.outputs.version }}\",\"name\":\"${{ steps.version.outputs.version }}\",\"body\":\"Release ${{ steps.version.outputs.version }}\n\nSee [CHANGELOG.md](https://git.allucanget.biz/zwitschi/linearvoid/src/branch/main/CHANGELOG.md) for details.\",\"draft\":false,\"prerelease\":false}"