---
phase: 01-grundger-st-tippmechanik
plan: 01
subsystem: infra
tags: [vite, typescript, indexeddb, css-custom-properties, biome, vitest]

# Dependency graph
requires: []
provides:
  - "Vite 6 project scaffold with dev server on 0.0.0.0:5173"
  - "TypeScript interfaces for all data models (Progress, Settings, ForestElement, etc.)"
  - "IndexedDB wrapper with 5 stores (progress, companionAssets, styleReference, forestElements, settings)"
  - "CSS design system with full color palette and finger color variables"
  - "Project directory structure per spec section 13"
affects: [01-02, 01-03, 01-04, 01-05, all-future-plans]

# Tech tracking
tech-stack:
  added: [vite@6.4.1, typescript@5.8, vitest@3.2, biome@1.9, fake-indexeddb@6.2]
  patterns: [vanilla-ts-vite, indexeddb-promise-wrapper, css-custom-properties, screen-toggle-via-css-class]

key-files:
  created:
    - package.json
    - tsconfig.json
    - vite.config.ts
    - biome.json
    - index.html
    - src/main.ts
    - src/types.ts
    - src/storage/db.ts
    - src/storage/db.test.ts
    - src/styles/main.css
    - public/config.example.json
  modified:
    - .gitignore

key-decisions:
  - "openDB accepts optional name parameter for test isolation with fake-indexeddb"
  - "Biome formats CSS hex colors as lowercase; spec values preserved semantically"

patterns-established:
  - "IndexedDB wrapper: Promise-based, transaction per operation, singleton key pattern for progress/settings"
  - "Screen management: CSS class toggle (.screen / .screen--active), no dynamic DOM creation"
  - "Test pattern: fake-indexeddb/auto with unique DB names per test for isolation"

requirements-completed: [FNDN-01, FNDN-02, FNDN-03, FNDN-04, PLSH-06]

# Metrics
duration: 4min
completed: 2026-03-29
---

# Phase 01 Plan 01: Project Scaffold Summary

**Vite 6 project with TypeScript interfaces, IndexedDB 5-store wrapper, and CSS design system (palette + finger colors + typography)**

## Performance

- **Duration:** 4 min
- **Started:** 2026-03-29T08:59:34Z
- **Completed:** 2026-03-29T09:03:32Z
- **Tasks:** 2
- **Files modified:** 22

## Accomplishments
- Vite dev server running on 0.0.0.0:5173 with vanilla-ts, Biome, and Vitest configured
- All TypeScript interfaces exported (Progress, Settings, ForestElement, CompanionAssets, StyleReference, Level, TypingExerciseState, ScreenName, CompanionType, KeyboardLayout, LevelStatus)
- IndexedDB wrapper with 5 stores, tested with fake-indexeddb (5 passing tests)
- CSS design system with full color palette (10 base colors + 9 finger colors) and Quicksand/Nunito typography
- Complete project directory structure per spec section 13 with .gitkeep placeholders

## Task Commits

Each task was committed atomically:

1. **Task 1: Vite project scaffold + project structure + CSS design system** - `4dc9523` (feat)
2. **Task 2: TypeScript interfaces + IndexedDB wrapper (TDD)**
   - RED: `35c1ef1` (test) - failing tests for DB wrapper
   - GREEN: `9912bfa` (feat) - implementation passing all tests
   - FORMAT: `6c065db` (chore) - biome formatting applied

## Files Created/Modified
- `package.json` - Project config with dev/build/test/lint scripts
- `tsconfig.json` - Strict TypeScript with ES2020 target, bundler resolution
- `vite.config.ts` - Dev server on 0.0.0.0:5173, preview on 4173
- `biome.json` - Formatter (tabs, 100 width) + linter (recommended rules)
- `index.html` - 5 screen sections (welcome, forest, lesson, reward, parent) with Google Fonts
- `.gitignore` - node_modules, dist, public/config.json, *.local
- `src/main.ts` - Minimal entry point importing CSS
- `src/types.ts` - All shared TypeScript interfaces and type aliases
- `src/storage/db.ts` - IndexedDB wrapper with openDB, get/save for progress and settings
- `src/storage/db.test.ts` - 5 tests covering DB initialization, CRUD, and empty-state handling
- `src/styles/main.css` - CSS custom properties, base typography, screen toggle classes
- `public/config.example.json` - Template for Gemini API config

## Decisions Made
- openDB accepts optional name parameter to enable test isolation with unique DB names per test
- Biome auto-formats hex colors to lowercase; functionally equivalent to spec uppercase values

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 3 - Blocking] Added optional DB name parameter for test isolation**
- **Found during:** Task 2 (TDD GREEN phase)
- **Issue:** fake-indexeddb shares state across tests using same DB name, causing empty-DB tests to fail
- **Fix:** Added optional `name` parameter to `openDB()`, tests use unique names per test
- **Files modified:** src/storage/db.ts, src/storage/db.test.ts
- **Verification:** All 5 tests pass
- **Committed in:** 9912bfa (Task 2 GREEN commit)

---

**Total deviations:** 1 auto-fixed (1 blocking)
**Impact on plan:** Minimal API surface change (optional parameter), necessary for test correctness. No scope creep.

## Issues Encountered
- Vite `create-vite` template scaffold cancelled because directory was not empty; files created manually instead

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

## Known Stubs
None - no stubs or placeholder data that affect plan goals.

## Next Phase Readiness
- Project scaffold complete, all subsequent plans can build on this foundation
- Types available for import in game/, forest/, companion/, api/ modules
- IndexedDB ready for use; companionAssets, styleReference, forestElements stores created but not yet with CRUD methods (Phase 2+ scope)
- CSS design system ready for all UI components

---
*Phase: 01-grundger-st-tippmechanik*
*Completed: 2026-03-29*