chore: prepare v2.1.1 release

Author: Nazrul Islam

.github/release-template.md

@@ -0,0 +1,49 @@
+## 🚀 Highlights
+
+**CodeforcesSync ${VERSION}** — released ${RELEASE_DATE}.
+
+This release continues to improve the extension with cross-browser support, automation, and reliability.
+
+## 🌐 Browser Support
+
+| Browser | Minimum Version |
+|---------|----------------|
+| Google Chrome | 102+ |
+| Microsoft Edge | 102+ (Chromium) |
+| Mozilla Firefox | 128+ |
+
+## 📦 Downloads
+
+Download the ZIP for your browser from the assets below.
+
+| Browser | Asset |
+|---------|-------|
+| Chrome | `CodeforcesSync-Chrome-${VERSION}.zip` |
+| Edge | `CodeforcesSync-Edge-${VERSION}.zip` |
+| Firefox | `CodeforcesSync-Firefox-${VERSION}.zip` |
+
+## ⚡ Installation
+
+1. Download the ZIP for your browser.
+2. Extract the ZIP to a folder on your computer.
+3. Open your browser's extension manager:
+   - **Chrome:** `chrome://extensions` → Developer mode → **Load unpacked**
+   - **Edge:** `edge://extensions` → Developer mode → **Load unpacked**
+   - **Firefox:** `about:debugging#/runtime/this-firefox` → **Load Temporary Add-on** → select `manifest.json`
+
+## 🔄 Upgrade Notes
+
+- Settings, sync state, and authentication are preserved across updates.
+- No re-authentication required unless noted in Breaking Changes.
+
+## 🛠 Breaking Changes
+
+None.
+
+## 🐛 Known Issues
+
+- See [open issues](https://github.com/${REPOSITORY}/issues) for current known issues.
+
+## 🙏 Contributors
+
+Thank you to everyone who contributed to this release.

.github/workflows/release.yml

@@ -23,8 +23,8 @@
 # Permissions
 # ─────────────
 #   contents: write          — create the GitHub Release and upload ZIP assets
-#   pull-requests: read      — required by gh release --generate-notes to read
-#                              merged PR titles for auto-generated release notes
+#   pull-requests: read      — required by generate-notes API to read merged
+#                              PR titles for auto-generated release notes
 #
 # Jobs
 # ─────
@@ -146,13 +146,37 @@ jobs:
           ls -lh "CodeforcesSync-Edge-${{ env.VERSION }}.zip"
           ls -lh "CodeforcesSync-Firefox-${{ env.VERSION }}.zip"
 
+      - name: Generate release body
+        run: |
+          RELEASE_DATE=$(date -u +"%Y-%m-%d")
+          echo "RELEASE_DATE=$RELEASE_DATE" >> "$GITHUB_ENV"
+
+          gh api \
+            repos/${{ github.repository }}/releases/generate-notes \
+            -f tag_name="${{ github.ref_name }}" \
+            --jq '.body' > generated-notes.md
+
+          node -e "
+            const fs = require('fs');
+            const template = fs.readFileSync('.github/release-template.md', 'utf8');
+            const generated = fs.readFileSync('generated-notes.md', 'utf8');
+            const body = template
+              .replace(/\$\{VERSION\}/g, process.env.VERSION)
+              .replace(/\$\{RELEASE_DATE\}/g, process.env.RELEASE_DATE)
+              .replace(/\$\{REPOSITORY\}/g, process.env.GITHUB_REPOSITORY)
+              + '\n\n---\n\n## 📋 Automated Changelog\n\n' + generated;
+            fs.writeFileSync('release-body.md', body);
+          "
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Create GitHub Release
         run: |
           gh release create "${{ github.ref_name }}" \
             "CodeforcesSync-Chrome-${{ env.VERSION }}.zip" \
             "CodeforcesSync-Edge-${{ env.VERSION }}.zip" \
             "CodeforcesSync-Firefox-${{ env.VERSION }}.zip" \
-            --generate-notes \
+            --notes-file release-body.md \
             --title "CodeforcesSync ${{ github.ref_name }}"
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}