fix: remove GitHub Actions workflow and handle existing release assets

The GitHub Actions fallback workflow raced with the Gitea CI — it ran
first and created the GitHub release with its own tarball (different
checksum), causing the Gitea CI's upload to fail and leaving a
checksum mismatch on Artifact Hub.

- Remove .github/workflows/release.yml entirely (Gitea CI handles both
  Gitea and GitHub releases)
- Fix the Gitea CI's GitHub release step to delete existing assets
  before uploading, so re-runs and race conditions are handled gracefully

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

.gitea/workflows/release.yaml

@@ -70,22 +70,42 @@ jobs:
       - name: Create GitHub release
         continue-on-error: true
         run: |
-          RELEASE_RESPONSE=$(curl -s -w "\n%{http_code}" -X POST \
+          GH_API="https://api.github.com/repos/cpfarhood/polaris-headlamp-plugin"
+          AUTH="-H \"Authorization: token ${{ secrets.GH_PAT }}\""
+          # Create release or fetch existing one
+          BODY=$(curl -s -X POST \
             -H "Authorization: token ${{ secrets.GH_PAT }}" \
             -H "Accept: application/vnd.github+json" \
-            "https://api.github.com/repos/cpfarhood/polaris-headlamp-plugin/releases" \
+            "${GH_API}/releases" \
             -d "{\"tag_name\":\"${GITHUB_REF_NAME}\",\"name\":\"${GITHUB_REF_NAME}\",\"generate_release_notes\":true}")
-          HTTP_CODE=$(echo "$RELEASE_RESPONSE" | tail -1)
-          BODY=$(echo "$RELEASE_RESPONSE" | sed '$d')
-          if [ "$HTTP_CODE" = "422" ]; then
+          RELEASE_ID=$(echo "$BODY" | node -e "process.stdin.resume();let d='';process.stdin.on('data',c=>d+=c);process.stdin.on('end',()=>console.log(JSON.parse(d).id))")
+          if [ "$RELEASE_ID" = "undefined" ]; then
             echo "Release already exists, fetching it..."
             BODY=$(curl -sf \
               -H "Authorization: token ${{ secrets.GH_PAT }}" \
               -H "Accept: application/vnd.github+json" \
-              "https://api.github.com/repos/cpfarhood/polaris-headlamp-plugin/releases/tags/${GITHUB_REF_NAME}")
+              "${GH_API}/releases/tags/${GITHUB_REF_NAME}")
+            RELEASE_ID=$(echo "$BODY" | node -e "process.stdin.resume();let d='';process.stdin.on('data',c=>d+=c);process.stdin.on('end',()=>console.log(JSON.parse(d).id))")
           fi
-          RELEASE_ID=$(echo "$BODY" | node -e "process.stdin.resume();let d='';process.stdin.on('data',c=>d+=c);process.stdin.on('end',()=>console.log(JSON.parse(d).id))")
           echo "Release ID: $RELEASE_ID"
+          # Delete any existing assets with the same name
+          ASSETS=$(curl -sf \
+            -H "Authorization: token ${{ secrets.GH_PAT }}" \
+            -H "Accept: application/vnd.github+json" \
+            "${GH_API}/releases/${RELEASE_ID}/assets")
+          echo "$ASSETS" | node -e "
+            process.stdin.resume();let d='';
+            process.stdin.on('data',c=>d+=c);
+            process.stdin.on('end',()=>{
+              const assets=JSON.parse(d);
+              assets.filter(a=>a.name==='${TARBALL}').forEach(a=>console.log(a.id));
+            })" | while read -r ASSET_ID; do
+            echo "Deleting existing asset $ASSET_ID..."
+            curl -sf -X DELETE \
+              -H "Authorization: token ${{ secrets.GH_PAT }}" \
+              "${GH_API}/releases/assets/${ASSET_ID}"
+          done
+          # Upload tarball
           curl -sf -X POST \
             -H "Authorization: token ${{ secrets.GH_PAT }}" \
             -H "Content-Type: application/gzip" \

.github/workflows/release.yml

@@ -1,56 +0,0 @@
-name: GitHub Release (fallback)
-
-on:
-  push:
-    tags:
-      - 'v*'
-
-permissions:
-  contents: write
-
-jobs:
-  release:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check if release already exists
-        id: check
-        run: |
-          if gh release view "${{ github.ref_name }}" --repo "${{ github.repository }}" &>/dev/null; then
-            echo "Release ${{ github.ref_name }} already exists (created by Gitea CI), skipping."
-            echo "exists=true" >> "$GITHUB_OUTPUT"
-          else
-            echo "No existing release found, building as fallback."
-            echo "exists=false" >> "$GITHUB_OUTPUT"
-          fi
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Checkout
-        if: steps.check.outputs.exists == 'false'
-        uses: actions/checkout@v4
-
-      - name: Setup Node.js
-        if: steps.check.outputs.exists == 'false'
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-          cache: 'npm'
-
-      - name: Install dependencies
-        if: steps.check.outputs.exists == 'false'
-        run: npm ci
-
-      - name: Build plugin
-        if: steps.check.outputs.exists == 'false'
-        run: npx @kinvolk/headlamp-plugin build
-
-      - name: Package tarball
-        if: steps.check.outputs.exists == 'false'
-        run: npx @kinvolk/headlamp-plugin package
-
-      - name: Create GitHub Release
-        if: steps.check.outputs.exists == 'false'
-        uses: softprops/action-gh-release@v2
-        with:
-          files: "*.tar.gz"
-          generate_release_notes: true