617e778a48
Add dual-channel release strategy for stable and beta releases: Release Channels: - Stable channel: production-ready releases (stable, latest, v2.3.0) - Beta channel: early access features (beta, v2.3.0-beta.1) - Configurable via PICPEAK_CHANNEL environment variable Update Notifications: - Admin dashboard shows available updates for configured channel - Checks GitHub Releases API with 1-hour cache - Can be disabled with UPDATE_CHECK_ENABLED=false CI/CD Changes: - New release-please-beta.yml workflow for beta prereleases - Docker build workflow produces stable/beta tags based on branch - Beta versions use v2.3.0-beta.1 format New Files: - .github/workflows/release-please-beta.yml - release-please-config-beta.json - .release-please-manifest-beta.json - backend/src/services/updateCheckService.js - frontend/src/components/admin/UpdateNotification.tsx Modified Files: - docker-compose.production.yml (channel selection) - .env.example (PICPEAK_CHANNEL, UPDATE_CHECK_ENABLED) - backend/src/routes/adminSystem.js (/updates endpoint) - frontend components (VersionInfo, AdminDashboard) - i18n locales (en.json, de.json) - README.md and DEPLOYMENT_GUIDE.md (documentation)