add workflow

.github/workflows/release.yml

@@ -0,0 +1,76 @@
+# .github/workflows/release.yml
+
+name: Lightweight Release
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build files
+        run: |
+          mkdir -p build
+
+          cp src/login.html build/
+          cp meta.json README.md build/
+
+          cat src/styles.css \
+            | tr -d '\n\t' \
+            | sed 's/  */ /g' \
+            | sed 's/ *{ */{/g' \
+            | sed 's/ *} */}/g' \
+            | sed 's/ *; */;/g' \
+            | sed 's/ *: */:/g' \
+            | sed 's/ *, */,/g' \
+            > build/styles.min.css
+
+          cat src/script.js \
+            | tr -d '\n\t' \
+            | sed 's/  */ /g' \
+            > build/script.min.js
+
+      - name: Create archive
+        run: |
+          cd build
+          zip -r ../release.zip .
+
+      - name: Generate next tag
+        id: tag
+        run: |
+          git fetch --tags
+
+          LAST_TAG=$(git tag -l "v*" | sort -V | tail -n1)
+
+          if [ -z "$LAST_TAG" ]; then
+            NEXT=1
+          else
+            NUM=${LAST_TAG#v}
+            NEXT=$((NUM + 1))
+          fi
+
+          NEW_TAG="v$NEXT"
+
+          echo "tag=$NEW_TAG" >> $GITHUB_OUTPUT
+
+      - name: Create and push tag
+        run: |
+          git config user.name "gitea-actions"
+          git config user.email "actions@local"
+
+          git tag ${{ steps.tag.outputs.tag }}
+          git push origin ${{ steps.tag.outputs.tag }}
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ steps.tag.outputs.tag }}
+          files: release.zip