# Implementation Plan: Issue #58 - Import Wizard (CSV/Excel)

## Summary
Implement a complete import wizard with CSV/Excel file upload and parsing, interactive column mapping, validation with preview, dry-run, duplicate detection, family grouping, and confirmed execution. Multi-step Vue wizard UI.

## Files to Create/Modify

### New Files
1. **`lib/Service/ImportService.php`** - Core import logic: parse, validate, detect duplicates, dry-run, execute
2. **`lib/Controller/ImportController.php`** - REST endpoints: upload, preview, execute
3. **`src/stores/import.js`** - Pinia store for import wizard state
4. **`src/views/Import.vue`** - Multi-step wizard view
5. **`tests/Unit/ImportServiceTest.php`** - Unit tests for CSV parsing, validation, duplicate detection

### Modified Files
6. **`appinfo/routes.php`** - Add import routes
7. **`src/router.js`** - Add /import route

## Acceptance Criteria Checklist
1. [ ] ImportService parses CSV with configurable delimiter/encoding
2. [ ] ImportService validates: required fields, IBAN, phone E.164, date formats
3. [ ] Duplicate detection: match on Vorname + Nachname + Geburtsdatum
4. [ ] Dry-run mode returns preview with validation errors
5. [ ] Execute mode creates members, families, addresses, phones, emails
6. [ ] ImportController: upload, preview, execute endpoints
7. [ ] Import.vue: 5-step wizard (upload, mapping, preview, dry-run, confirm)
8. [ ] Column mapping UI with source-to-target dropdowns
9. [ ] Validation errors highlighted in preview table
10. [ ] Results summary: created, skipped duplicates, errors
11. [ ] Admin-only access
12. [ ] Unit tests for CSV parsing and validation