ci: add release workflow

.gitea/workflows/release.yml

@@ -0,0 +1,62 @@
+name: Release VSIX
+
+on:
+  push:
+    tags:
+      - "v*"
+  workflow_dispatch:
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    permissions:
+      releases: write
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+
+      - run: npm ci
+
+      - run: npm run build
+
+      - run: npm run package
+
+      - name: Upload VSIX to release
+        if:
+          startsWith(github.ref, 'refs/tags/') || github.event_name ==
+          'workflow_dispatch'
+        env:
+          GITEA_TOKEN: ${{ github.token }}
+        run: |
+          set -e
+          TAG="${GITHUB_REF#refs/tags/}"
+          VSIX=$(ls *.vsix | head -1)
+          API="${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}"
+
+          echo "Creating release for tag: $TAG"
+          BODY=$(jq -n --arg tag "$TAG" '{tag_name: $tag, name: $tag}')
+
+          RESP=$(curl -s -X POST \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -H "Content-Type: application/json" \
+            -d "$BODY" \
+            "${API}/releases") || true
+
+          RELEASE_ID=$(echo "$RESP" | jq -r '.id // empty')
+          if [ -z "$RELEASE_ID" ]; then
+            echo "Release may already exist, fetching..."
+            RELEASE_ID=$(curl -s \
+              -H "Authorization: token ${GITEA_TOKEN}" \
+              "${API}/releases/tags/${TAG}" | jq -r '.id')
+          fi
+
+          echo "Uploading $VSIX to release $RELEASE_ID"
+          curl -s -X POST \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -F "attachment=@${VSIX}" \
+            "${API}/releases/${RELEASE_ID}/assets"
+
+          echo "Done"