# Feature Context: Database Backup & Restore

## Configuration
- **Development mode:** Automated
- **Execution mode:** Direct
- **Strategy:** Big Bang
- **Build:** `npm run build`
- **Test:** `npm run test`
- **Lint:** `npm run lint`
- **Dev server:** `npm run dev` (port: 5173)

## Current State
Starting implementation. Existing import/export code is still in place — will be removed in Phase 4.

## Tech Stack
- SvelteKit 5 + TypeScript
- Prisma ORM with SQLite (`data/launcher.db`)
- node-cron (already a dependency, used by healthcheckScheduler)
- Zod validation
- Tailwind CSS + bits-ui components
- svelte-i18n for localization
- lucide-svelte for icons

## Key Patterns from Codebase
- Services in `src/lib/server/services/` — pure functions, Prisma transactions
- API routes follow SvelteKit conventions with admin auth guards
- Scheduler pattern: `src/lib/server/jobs/healthcheckScheduler.ts` — cron start/stop, wired in hooks.server.ts
- Admin components in `src/lib/components/admin/`
- Audit logging via `auditLogService.ts`

## Cross-Phase Dependencies
- Phase 2 depends on Phase 1 (backupService)
- Phase 3 depends on Phases 1+2 (API endpoints)
- Phase 4 is independent cleanup

## Implementation Notes
- Using `VACUUM INTO` for safe backup creation (no locking)
- Backups stored in `data/backups/` directory
- Restore requires Prisma disconnect → file swap → reconnect
- SystemSettings gets new fields: backupEnabled, backupCronExpression, backupMaxCount