---
phase: 04-polish-audio
plan: 03
subsystem: ui
tags: [indexeddb, export, import, reset, parent-area, json]

# Dependency graph
requires:
  - phase: 03-gameplay
    provides: Parent area with stats and settings UI
provides:
  - Export progress+settings as JSON download
  - Import JSON backup with validation and confirmation
  - Reset all IndexedDB data with double confirmation
affects: []

# Tech tracking
tech-stack:
  added: []
  patterns: [JSON export via Blob+ObjectURL, file import via hidden input, double-confirm destructive actions]

key-files:
  created: []
  modified:
    - index.html
    - src/styles/main.css
    - src/ui/parent.ts

key-decisions:
  - "Export excludes Blobs (companion assets, style reference, forest images) - only progress+settings for portability"
  - "Import validates required fields before overwrite confirmation to prevent data corruption"
  - "Reset clears all 5 IndexedDB stores with double confirmation for safety"

patterns-established:
  - "Destructive actions use double confirm() dialogs"
  - "Data feedback uses temporary inline message with auto-hide"

requirements-completed: [PRNT-05, PRNT-06, PRNT-07]

# Metrics
duration: 2min
completed: 2026-03-29
---

# Phase 04 Plan 03: Export/Import/Reset Summary

**Parent area data management: JSON export/import for backup and full IndexedDB reset with double confirmation**

## Performance

- **Duration:** 2 min
- **Started:** 2026-03-29T16:14:42Z
- **Completed:** 2026-03-29T16:17:05Z
- **Tasks:** 2
- **Files modified:** 3

## Accomplishments
- Daten section with three action buttons in parent area HTML
- Export downloads zauberwald-backup.json with progress and settings (no Blobs)
- Import validates JSON structure, confirms overwrite, saves and reloads
- Reset clears all 5 IndexedDB stores after two confirmation dialogs

## Task Commits

Each task was committed atomically:

1. **Task 1: HTML Daten-Section + Export/Import/Reset buttons** - `5396dc0` (feat)
2. **Task 2: Export/Import/Reset logic in parent.ts** - `7931f7e` (feat)

## Files Created/Modified
- `index.html` - Added Daten section with export/import/reset buttons and hidden file input
- `src/styles/main.css` - Added styles for action buttons including danger variant
- `src/ui/parent.ts` - Added exportData, importData, resetAllData functions with button wiring

## Decisions Made
- Export excludes Blobs (only progress+settings) for JSON portability and small file size
- Import validates required fields (currentLevel, completedLevels, totalSessions, selectedCharacter, selectedLayout, audioEnabled) before prompting overwrite
- Reset clears all 5 stores (progress, companionAssets, styleReference, forestElements, settings) then reloads

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered
None

## User Setup Required
None - no external service configuration required.

## Next Phase Readiness
- Data management complete, parent area fully functional with stats, settings, and data backup/restore
- No blockers for remaining phase 04 plans

---
*Phase: 04-polish-audio*
*Completed: 2026-03-29*