docs: initialize project

.planning/PROJECT.md

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+# HouseHoldKeaper
+
+## What This Is
+
+A local-first Flutter app for organizing household chores and one-time projects, built for personal/couple use on Android. Takes the room-based task scheduling model (inspired by BeTidy), strips cloud/account/social features, and wraps it in a calm, minimal Material 3 UI. Fully offline, free, privacy-respecting — all data stays on-device.
+
+## Core Value
+
+Users can see what needs doing today, mark it done, and trust the app to schedule the next occurrence — without thinking about it.
+
+## Requirements
+
+### Validated
+
+(None yet — ship to validate)
+
+### Active
+
+- [ ] Room CRUD with icons and optional photos
+- [ ] Task CRUD with frequency intervals and due date calculation
+- [ ] Daily plan view with overdue/today/upcoming sections
+- [ ] Task completion with auto-scheduling of next due date
+- [ ] Bundled task templates per room type (German only)
+- [ ] Daily summary notification
+- [ ] Light/dark theme with calm Material 3 palette
+- [ ] Cleanliness indicator per room (based on overdue vs on-time)
+- [ ] Task sorting (due date, alphabetical, interval, effort)
+- [ ] Task history (completion log per task)
+
+### Out of Scope
+
+- User accounts & cloud sync — local-only by design
+- Leaderboards & points ranking — not a gamification app
+- Subscription model / in-app purchases — free forever
+- Family profile sharing across devices — single-device app
+- Server-side infrastructure — zero backend
+- Data export/import (JSON) — deferred to v1.1
+- English localization — deferred to v1.1 (ship German-only MVP)
+- Real-time cross-device sync — potential future self-hosted feature
+- Tablet-optimized layout — future enhancement
+- Statistics & insights dashboard — v2.0
+- Onboarding wizard — v2.0
+- Custom accent color picker — v2.0
+
+## Context
+
+- Inspired by BeTidy (iOS/Android household cleaning app) — taking the proven room-based model, removing cloud/social, refining the UI
+- Built for personal use with partner on a shared Android device; may publish publicly later
+- Code and comments in English; UI strings German-only for MVP
+- Room photos are nice-to-have for MVP — icon-only rooms are sufficient initially
+- Developer is new to Drift (SQLite ORM) — plan should account for learning curve
+- Gitea (self-hosted on Hetzner) for version control; no CI/CD pipeline yet
+
+## Constraints
+
+- **Tech stack**: Flutter + Dart, Riverpod for state management, Drift for local SQLite
+- **Platform**: Android-first (iOS later)
+- **Offline**: 100% offline-capable, zero network dependencies
+- **Privacy**: No data leaves the device, no analytics, no tracking
+- **Language**: German-only UI for MVP, English code/comments
+- **No CI**: No automated build pipeline initially
+
+## Key Decisions
+
+| Decision | Rationale | Outcome |
+|----------|-----------|---------|
+| Riverpod over Bloc | Modern, compile-safe, less boilerplate, Dart-native | — Pending |
+| Drift over raw sqflite | Type-safe queries, compile-time validation, migration support | — Pending |
+| Android-first | Primary device is Android; iOS follows | — Pending |
+| German-only MVP | Primary user language; defer localization infrastructure | — Pending |
+| No CI initially | Keep scope focused on the app itself | — Pending |
+| Calm Material 3 palette | Muted greens, warm grays, gentle blues — calm productivity, not playful | — Pending |
+| Clean Architecture | Feature-based folder structure with data/domain/presentation layers | — Pending |
+
+---
+*Last updated: 2026-03-15 after initialization*