feat: add complete translation support for backup admin page

- Add comprehensive backup translation keys to en.json and de.json
- Update all backup components to use i18next translations:
  - BackupManagement.jsx: main page with tab navigation
  - BackupDashboard.jsx: health status and statistics
  - BackupConfiguration.jsx: settings and destination configuration
  - BackupHistory.jsx: backup history table and details
  - RestoreWizard.jsx: multi-step restore process
- Replace all hardcoded strings with translation keys
- Support dynamic values with interpolation
- Fix Drone CI/CD github-release step:
  - Write release.json to /tmp to avoid permission issues
  - Use quoted heredoc to prevent shell interpretation errors
  - Replace placeholders with actual tag values using sed

🤖 Generated with Claude Code

Co-Authored-By: Claude <[email protected]>

.drone.yml

@@ -118,25 +118,28 @@ steps:
         from_secret: GITHUB_TOKEN
     commands:
       - |
-        # Create release payload
-        cat > release.json <<EOF
+        # Create release payload in /tmp to avoid permission issues
+        cat > /tmp/release.json <<'RELEASE_EOF'
         {
-          "tag_name": "${DRONE_TAG}",
+          "tag_name": "DRONE_TAG_PLACEHOLDER",
           "target_commitish": "main",
-          "name": "PicPeak ${DRONE_TAG}",
-          "body": "# PicPeak ${DRONE_TAG}\n\n## 🐳 Docker Images\n\nThis release includes Docker images published to GitHub Container Registry:\n\n\`\`\`bash\n# Backend\ndocker pull ghcr.io/the-luap/picpeak-backend:${DRONE_TAG}\ndocker pull ghcr.io/the-luap/picpeak-backend:latest\n\n# Frontend\ndocker pull ghcr.io/the-luap/picpeak-frontend:${DRONE_TAG}\ndocker pull ghcr.io/the-luap/picpeak-frontend:latest\n\`\`\`\n\n## 📦 What's New\n\nSee the [README](https://github.com/the-luap/picpeak#readme) for features and documentation.\n\n## 🚀 Quick Start\n\n\`\`\`bash\n# Clone and deploy\ngit clone https://github.com/the-luap/picpeak.git\ncd picpeak\n\n# Use the tagged version\ndocker-compose -f docker-compose.prod.yml up -d\n\`\`\`\n\n---\n\nFor detailed deployment instructions, see the [Deployment Guide](https://github.com/the-luap/picpeak/blob/main/DEPLOYMENT.md).",
+          "name": "PicPeak DRONE_TAG_PLACEHOLDER",
+          "body": "# PicPeak DRONE_TAG_PLACEHOLDER\n\n## 🐳 Docker Images\n\nThis release includes Docker images published to GitHub Container Registry:\n\n```bash\n# Backend\ndocker pull ghcr.io/the-luap/picpeak-backend:DRONE_TAG_PLACEHOLDER\ndocker pull ghcr.io/the-luap/picpeak-backend:latest\n\n# Frontend\ndocker pull ghcr.io/the-luap/picpeak-frontend:DRONE_TAG_PLACEHOLDER\ndocker pull ghcr.io/the-luap/picpeak-frontend:latest\n```\n\n## 📦 What's New\n\nSee the [README](https://github.com/the-luap/picpeak#readme) for features and documentation.\n\n## 🚀 Quick Start\n\n```bash\n# Clone and deploy\ngit clone https://github.com/the-luap/picpeak.git\ncd picpeak\n\n# Use the tagged version\ndocker-compose -f docker-compose.prod.yml up -d\n```\n\n---\n\nFor detailed deployment instructions, see the [Deployment Guide](https://github.com/the-luap/picpeak/blob/main/DEPLOYMENT.md).",
           "draft": false,
           "prerelease": false
         }
-        EOF
-      - |
+        RELEASE_EOF
+        
+        # Replace placeholders with actual tag
+        sed -i "s/DRONE_TAG_PLACEHOLDER/${DRONE_TAG}/g" /tmp/release.json
+        
         # Create the release on GitHub
         curl -X POST \
           -H "Accept: application/vnd.github+json" \
-          -H "Authorization: Bearer $GITHUB_TOKEN" \
+          -H "Authorization: Bearer ${GITHUB_TOKEN}" \
           -H "X-GitHub-Api-Version: 2022-11-28" \
           https://api.github.com/repos/the-luap/picpeak/releases \
-          -d @release.json
+          -d @/tmp/release.json
 
 trigger:
   event: