Introduced ConnectionManager to support offline-first architecture:
- New internal/db/connection.go with thread-safe connection management
- Lazy connection establishment (5s timeout, 10s cooldown)
- Automatic ping caching (30s interval) to avoid excessive checks
- Updated middleware/offline.go to use ConnectionManager.IsOnline()
- Updated sync/worker.go to use ConnectionManager instead of direct DB
This enables the application to start without MariaDB and gracefully
handle offline/online transitions.
Part of Phase 2.5: Full Offline Mode
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Fixed two critical issues preventing offline-first operation:
1. **Instant startup** - Removed blocking GetDB() call during server
initialization. Server now starts in <10ms instead of 1+ minute.
- Changed setupRouter() to use lazy DB connection via ConnectionManager
- mariaDB connection is now nil on startup, established only when needed
- Fixes timeout issues when MariaDB is unreachable
2. **Offline mode nil pointer panics** - Added graceful degradation
when database is offline:
- ComponentService.GetCategories() returns DefaultCategories if repo is nil
- ComponentService.List/GetByLotName checks for nil repo
- PricelistService methods return empty/error responses in offline mode
- All methods properly handle nil repositories
**Before**: Server startup took 1min+ and crashed with nil pointer panic
when trying to load /configurator page offline.
**After**: Server starts instantly and serves pages in offline mode using
DefaultCategories and SQLite data.
Related to Phase 2.5: Full Offline Mode (local-first architecture)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
- Create htmx-powered partial template for sync status display
- Show Online/Offline indicator with color coding (green/red)
- Display pending changes count badge when there are unsynced items
- Add Sync button to push pending changes (appears only when needed)
- Auto-refresh every 30 seconds via htmx polling
- Replace JavaScript-based sync indicator with server-rendered partial
- Integrate SyncStatusPartial handler with template rendering
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
- Consolidate UI TODO items into single sync status partial task
- Move conflict resolution to Phase 4
- Add LOCAL_FIRST_INTEGRATION.md with architecture guide
- Add unified repository interface for future use
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
- Add development phases (pricelists, projects, local SQLite, price versioning)
- Add new table schemas (qt_pricelists, qt_projects, qt_specifications)
- Add local SQLite database structure for offline work
- Remove Docker files (distributing as binary only)
- Disable RBAC for initial phases
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add price_updated_at field to qt_configurations table to track when prices were last updated
- Add RefreshPrices() method in configuration service to update all component prices with current values from database
- Add POST /api/configs/:uuid/refresh-prices API endpoint for price updates
- Add "Refresh Prices" button in configurator UI next to Save button
- Display last price update timestamp in human-readable format (e.g., "5 min ago", "2 hours ago")
- Create migration 004_add_price_updated_at.sql for database schema update
- Update CLAUDE.md documentation with new API endpoint and schema changes
- Add MIGRATION_PRICE_REFRESH.md with detailed migration instructions
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add is_hidden field to hide components from configurator
- Add colored dot indicator showing component usage status:
- Green: available in configurator
- Cyan: used as source for meta-articles
- Gray: hidden from configurator
- Optimize price recalculation with caching and skip unchanged
- Show current lot name during price recalculation
- Add Dockerfile (Alpine-based multi-stage build)
- Add docker-compose.yml and .dockerignore
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
mchusandClaude Sonnet 4.5