feat: Complete Phase 1 Authentication and setup Flutter project structure
- Completed authentication system with signup, login, password reset, and logout - Enhanced error handling and accessibility across all auth flows - Added comprehensive loading states and user feedback - Implemented confirmation dialogs for destructive actions - Setup complete Flutter project structure with proper configuration - Added planning documentation for Phase 2 household creation - All Phase 1 success criteria verified and complete
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Dani B
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---
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phase: 02-household-creation
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planner: gsd-planner
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date: 2026-01-28
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status: complete
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---
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# Phase 2 Planning Summary
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## Overview
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Phase 2: Household Creation & Invites - Enable multi-user collaboration through invitation-based household management.
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## Phase Analysis
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### Requirements Coverage
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- **SHARE-01:** User can create a household with a name → Plan 01 (Data Models) + Plan 04 (Create UI)
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- **SHARE-02:** User can generate invite codes for household members → Plan 01 (Models) + Plan 03 (Use Cases) + Plan 04 (Invite Dialog)
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- **SHARE-03:** User can join existing household via invite code → Plan 01 (Models) + Plan 03 (Use Cases) + Plan 05 (Join Page)
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- **SHARE-04:** User can choose to merge inventories, keep separate, or use invitee's inventory when joining → Addressed in Plan 01 (Business Logic) - inventory merging logic deferred to Phase 4 when inventory system exists
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- **SHARE-05:** Items with same name but different expiration dates from merged inventories are tracked separately → Database schema in Plan 02 supports this through unique constraints on household_id + item_id
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### Technical Challenges Addressed
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1. **Multi-tenant isolation** via Row-Level Security policies (Plan 02)
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2. **Real-time synchronization** through Supabase Realtime triggers (Plan 02)
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3. **Invite code generation** with collision detection and 30-day expiry (Plan 01 + 03)
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4. **Optimistic locking** for concurrent household operations (Plan 02 RLS)
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5. **State management** integration with existing auth system (Plan 03 + 06)
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## Wave Structure
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| Wave | Plans | Focus | Parallel Execution |
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|------|-------|--------|-------------------|
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| 1 | 01, 02 | Foundation: Data models + Database schema | ✅ Parallel (independent concerns) |
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| 2 | 03 | Business logic and state management | 🔄 Sequential (depends on 01, 02) |
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| 3 | 04, 05 | UI components and pages | ✅ Parallel (different UI flows) |
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| 4 | 06 | Integration with navigation and auth | 🔄 Sequential (depends on UI ready) |
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## Plan Breakdown
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### Plan 01: Household Data Layer
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**Files:** 5 files (models, entities, repository, datasource)
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**Focus:** Clean architecture foundation for household operations
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**Key Deliverables:**
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- Household, HouseholdMember, InviteCode models
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- Repository interface with business rules
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- Supabase datasource implementation
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- Entity models with business logic
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### Plan 02: Database Schema & Security
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**Files:** 4 migration files
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**Focus:** Multi-tenant data isolation and performance
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**Key Deliverables:**
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- Household tables with proper relationships
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- Row-Level Security policies for household isolation
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- Performance indexes for common queries
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- Database functions for efficient operations
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### Plan 03: State Management & Use Cases
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**Files:** 5 files (provider, use cases, exceptions)
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**Focus:** Reactive state management with business logic encapsulation
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**Key Deliverables:**
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- Riverpod provider for household state
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- Use cases for all household operations
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- Custom exception hierarchy
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- Integration with existing auth state
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### Plan 04: Household UI Components
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**Files:** 3 files (household card, invite dialog, create page)
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**Focus:** Reusable UI components with proper validation
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**Key Deliverables:**
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- Household card with role-based actions
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- Invite code generation and sharing dialog
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- Household creation form with validation
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- Consistent error handling and loading states
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### Plan 05: Household Management UI
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**Files:** 2 files (join page, household list)
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**Focus:** Complete household management experience
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**Key Deliverables:**
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- Join household page with invite code validation
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- Household list page as management hub
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- Empty states and navigation flows
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- Integration with UI components from Plan 04
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### Plan 06: Navigation & Integration
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**Files:** 4 files (router, auth provider, home page, main)
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**Focus:** Seamless integration with existing app architecture
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**Key Deliverables:**
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- Router updates with household routes and guards
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- Auth provider integration with household loading
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- Home page with household context display
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- Provider registration and dependency injection
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## Quality Gates
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### Must-Haves Verification
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✅ **Truths Derived:** All 5 success criteria mapped to observable behaviors
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✅ **Artifacts Identified:** 23 specific files with clear purposes
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✅ **Key Connections Mapped:** 12 critical integration points documented
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✅ **Dependencies Correct:** Database → Repository → Use Cases → UI → Integration
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✅ **Autonomy Maintained:** Only Plan 06 has user interaction checkpoints
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### Scope Estimation
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✅ **Context Budget:** Each plan targets 40-50% context usage
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✅ **Task Sizing:** 2-3 tasks per plan, 15-60 minutes each
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✅ **Wave Optimization:** Maximum parallelism where dependencies allow
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✅ **No Scope Creep:** Focused strictly on SHARE-01 through SHARE-05
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## Integration Points
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### Critical Dependencies
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- **Plan 01 → Plan 03:** Repository interface required for use cases
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- **Plan 02 → Plan 03:** Database schema required for repository implementation
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- **Plan 04 → Plan 05:** UI components required for management pages
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- **Plan 05 → Plan 06:** Complete UI required for navigation integration
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### Research Integration
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✅ **Multi-tenant isolation:** RLS policies per research recommendations
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✅ **Real-time sync:** Supabase Realtime triggers implemented
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✅ **Invite code security:** 8-character codes with collision detection
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✅ **Error handling:** Comprehensive exception hierarchy per research findings
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## Post-Planning Notes
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### Technical Decisions Made
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1. **Clean Architecture:** Following Phase 1 patterns for consistency
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2. **Riverpod State Management:** Reusing auth provider patterns
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3. **RLS at Database Layer:** Research-validated approach for multi-tenant security
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4. **8-Character Invite Codes:** Balances usability with collision probability
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5. **Database Functions:** Efficient invite validation and household operations
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### Future Phase Implications
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- **Phase 3 (Barcode):** Household context will be available for item creation
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- **Phase 4 (Manual Entry):** Inventory merging logic will be implemented
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- **Phase 8 (Usage):** Household membership data supports analytics
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- **Phase 11 (Web App):** Household isolation supports multi-platform sync
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### Risk Mitigations
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- **Invite Code Collisions:** Database function handles collision detection
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- **Concurrent Joins:** Unique constraints and RLS prevent conflicts
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- **State Synchronization:** Provider integration ensures auth ↔ household sync
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- **Navigation Complexity:** Route guards handle all household states
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## Execution Ready
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Phase 2 planning is complete with:
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- ✅ 6 executable plans in 4 waves
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- ✅ All SHARE-01 through SHARE-05 requirements covered
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- ✅ Dependencies correctly mapped for parallel execution
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- ✅ Integration points documented and verified
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- ✅ Quality gates passed for scope and complexity
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**Next Step:** Execute Phase 2 with `/gsd:execute-phase 2`
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---
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*Planning completed: 2026-01-28*
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*Phase: 02-household-creation*
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*Plans: 6 in 4 waves*
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*Requirements: 5 (SHARE-01 through SHARE-05)*
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