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+# Phase 1: Grundgerüst + Tippmechanik - Context
+
+**Gathered:** 2026-03-29 (assumptions mode)
+**Status:** Ready for planning
+
+<domain>
+## Phase Boundary
+
+Eine spielbare Tipp-Übung im Browser, die ohne API funktioniert. Umfasst: Vite-Projekt-Setup, Projektstruktur, TypeScript-Interfaces, IndexedDB-Wrapper, Screen-Management, Willkommens-Screen mit Begleitfigur/Layout-Auswahl, QWERTZ-Bildschirmtastatur mit Fingerfarben, Übungsphase "Üben" (Buchstaben einzeln tippen), adaptives Tempo, Stufen 1–6 Daten, Stufenkarte, CSS-Palette/Typografie. Kein API-Zugriff, keine Bildgenerierung, keine Begleitfigur-Dialoge.
+</domain>
+
+<decisions>
+## Implementation Decisions
+
+### Screen Management Architecture
+- **D-01:** All 5 screens (welcome, forest, lesson, reward, parent) exist as DOM containers in index.html, toggled via CSS classes with fade transitions. No dynamic DOM creation/destruction. Each screen is a `<section>` with a shared `.screen` class; only `.screen--active` is visible.
+
+### IndexedDB Schema
+- **D-02:** Create the full IndexedDB schema with all 5 stores (progress, companionAssets, styleReference, forestElements, settings) in Phase 1. Only `progress` and `settings` get full read/write methods; other stores are structurally defined but unused until Phase 2+. This avoids painful version migrations later.
+
+### Typing Exercise Scope
+- **D-03:** Phase 1 implements only the "Üben" (practice) phase — single letters appearing one at a time, typed by the child. "Entdecken" (TYPE-05) and "Wörter bauen" (TYPE-06) are Phase 3 scope. The lesson screen shows only the practice flow.
+- **D-04:** A lesson consists of 8–12 random letters from the current level's key set. After all letters are correctly typed, the lesson is complete. No timer visible to the child.
+
+### Companion Placeholders
+- **D-05:** Welcome screen uses emoji placeholders (🧚 🦄 🦊 🦉) with character names for companion selection. No companion figure appears during typing exercise. Real generated avatars replace these in Phase 2 (ASST-03).
+
+### Level Progression
+- **D-06:** Levels 1–6 defined as static data with their key sets per the spec's progression table. A level counts as completed after one full playthrough (not perfection). Next level unlocks immediately.
+- **D-07:** After completing a lesson, the app returns to the forest overview (Stufenkarte). No reward screen content in Phase 1 — the reward screen exists structurally but is skipped or shows a simple "Gut gemacht!" placeholder until Phase 3 adds Gemini-generated rewards.
+
+### Adaptive Tempo
+- **D-08:** Start interval 3s. After 2 correct in sequence: -200ms (min 1.5s). After 1 error: +500ms (max 4s). Reset to 3s at start of each new lesson.
+
+### Claude's Discretion
+- Screen transition timing and easing (CSS fade duration, easing function)
+- Internal file/module organization within the spec's directory structure
+- Exact DOM structure of keyboard component (divs vs buttons, row grouping)
+- Test coverage scope — focus on typing logic and level progression, not DOM rendering
+</decisions>
+
+<canonical_refs>
+## Canonical References
+
+**Downstream agents MUST read these before planning or implementing.**
+
+- `SPEC.md` — Full specification (sections 0–16), THE authoritative source for all design decisions
+- `SPEC.md` section 4.1 — Level progression table (keys per level, finger assignments)
+- `SPEC.md` section 6.2 — Tech stack decisions (all final)
+- `SPEC.md` section 6.3 — IndexedDB store definitions
+- `SPEC.md` section 7.2 — CSS color palette and typography
+- `SPEC.md` section 8 — Keyboard layout, finger mapping, DE/CH differences
+- `SPEC.md` section 13 — Project structure (directories + files)
+- `.planning/REQUIREMENTS.md` — Phase 1 requirements: FNDN-01–05, ONBD-01–04, KYBD-01–05, TYPE-01–04, LEVL-01–03, FRST-04–05, PLSH-06
+- `public/config.json` — Gemini API key and model names (not used in Phase 1 but structure exists)
+</canonical_refs>
+
+<code_context>
+## Existing Code Insights
+
+### Reusable Assets
+No existing code — greenfield project. The only assets are:
+- `public/config.json` with Gemini API key and model names
+- `public/config.expample.json` as template
+
+### Established Patterns
+None yet — Phase 1 establishes all patterns. The spec mandates:
+- Vanilla TypeScript, no framework
+- Single `main.css` with CSS Custom Properties
+- Biome for lint/format, Vitest for tests
+- Vite 6.x with vanilla-ts template
+
+### Integration Points
+- `public/config.json` — Phase 2 will read this for API access; Phase 1 should not depend on it
+- IndexedDB stores — Phase 2+ will use companionAssets, styleReference, forestElements stores created here
+- Screen management — Phase 3 will add dynamic content to forest and reward screens
+- Keyboard component — Phase 3 "Entdecken" phase will highlight keys for new letter introduction
+</code_context>
+
+<specifics>
+## Specific Ideas
+
+No specific requirements — open to standard approaches
+</specifics>
+
+<deferred>
+## Deferred Ideas
+
+None — analysis stayed within phase scope
+</deferred>
diff --git a/.planning/phases/01-grundger-st-tippmechanik/01-DISCUSSION-LOG.md b/.planning/phases/01-grundger-st-tippmechanik/01-DISCUSSION-LOG.md
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+# Phase 1: Grundgerüst + Tippmechanik - Discussion Log (Assumptions Mode)
+
+> **Audit trail only.** Do not use as input to planning, research, or execution agents.
+> Decisions captured in CONTEXT.md — this log preserves the analysis.
+
+**Date:** 2026-03-29
+**Phase:** 01-Grundgerüst + Tippmechanik
+**Mode:** assumptions
+**Areas analyzed:** Screen Management Architecture, IndexedDB Schema, Typing Exercise Scope, Companion Placeholders, Level Progression, Adaptive Tempo
+
+## Assumptions Presented
+
+### Screen Management Architecture
+| Assumption | Confidence | Evidence |
+|------------|-----------|----------|
+| All 5 screens as DOM containers, toggled via CSS classes with fade transitions | Likely | SPEC.md line 929: "5 Screens, nur einer sichtbar, Transitions mit CSS fade" |
+
+### IndexedDB Schema
+| Assumption | Confidence | Evidence |
+|------------|-----------|----------|
+| Create full schema with all 5 stores upfront, only implement read/write for progress + settings | Confident | FNDN-04 in REQUIREMENTS.md: "IndexedDB-Wrapper mit allen Stores" |
+
+### Typing Exercise Scope
+| Assumption | Confidence | Evidence |
+|------------|-----------|----------|
+| Only "Üben" phase implemented; "Entdecken" and "Wörter bauen" deferred to Phase 3 | Confident | TYPE-05, TYPE-06, TYPE-07 mapped to Phase 3 in REQUIREMENTS.md |
+
+### Companion Placeholders
+| Assumption | Confidence | Evidence |
+|------------|-----------|----------|
+| Emoji placeholders for companion selection, no companion during typing | Likely | SPEC.md line 930: "Platzhalter-Emojis"; ASST-03/04 mapped to Phase 2 |
+
+## Corrections Made
+
+No corrections — all assumptions confirmed.
+
+## External Research Flagged
+
+- Vite 6.x vanilla-ts template defaults and tsconfig
+- Biome configuration for TypeScript strict + Vite
+- IndexedDB wrapper approach: custom vs `idb` library