Clean up: Remove feasibility files
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# Frontend Development Handoff
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**Project:** TaskFlow Task Management System
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**Phase:** Architecture → Frontend Transition
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**Handoff Date:** 2024-09-05
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**Frontend Timeline:** Week 2-4 of 8-week project cycle
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## Design Assets Ready for Implementation
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### Visual Mockups (`architect/01-mockups/`)
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✅ **Task Dashboard** — Desktop (1440px) and Mobile (375px) layouts
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✅ **Create/Edit Task** — Desktop form modal and mobile full-screen
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✅ **Error States** — Blocked task handling with clear user guidance
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**Design Principles to Follow:**
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- Status-first interface with color-coded badges
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- Team-centric design emphasizing user ownership
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- 3-step maximum for task creation workflow
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- Accessibility-first approach (WCAG 2.1 AA compliance)
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### Component Architecture (`architect/02-design/`)
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✅ **Single Page Application** — React or Vue.js framework
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✅ **Responsive Design** — Desktop-first with mobile optimization
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✅ **REST API Integration** — JSON communication with backend
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## Technical Specifications
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### Required Components
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**Core UI Components:**
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```
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TaskList
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├── TaskCard (mobile)
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├── TaskRow (desktop)
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├── StatusBadge
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├── PriorityIndicator
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└── UserAvatar
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TaskForm
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├── FormInput
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├── UserSelector
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├── StatusPicker
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├── DatePicker
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└── ValidationMessage
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AppShell
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├── Header
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├── Navigation
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├── UserProfile
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└── TeamSidebar
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```
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**State Management Requirements:**
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- Current user context and permissions
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- Task list with filtering (My Tasks, All Tasks, Blocked)
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- Form state with validation
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- Loading and error states for all async operations
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### API Integration Points
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**Authentication Endpoints:**
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```
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POST /api/auth/login - User login
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POST /api/auth/logout - User logout
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GET /api/auth/me - Current user info
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```
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**Task Management Endpoints:**
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```
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GET /api/tasks - List tasks (filterable by user, status)
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POST /api/tasks - Create new task
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PUT /api/tasks/:id - Update existing task
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DELETE /api/tasks/:id - Delete task
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GET /api/users - List team members (for assignment)
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```
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**Expected Response Formats:**
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```json
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// Task Object
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{
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"id": 123,
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"title": "Update client documentation",
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"description": "Review and update onboarding docs",
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"assigned_to": {
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"id": 456,
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"username": "sarah.chen",
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"full_name": "Sarah Chen",
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"avatar_url": "/avatars/sarah.jpg"
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},
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"status": "in_progress", // open, in_progress, blocked
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"priority": "high", // low, medium, high
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"due_date": "2024-10-15",
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"created_by": { /* user object */ },
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"created_at": "2024-09-05T10:30:00Z",
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"updated_at": "2024-09-05T14:22:00Z"
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}
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```
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### Browser Support Matrix
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- **Chrome 90+** (primary development target)
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- **Firefox 88+** (secondary testing)
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- **Safari 14+** (macOS/iOS testing)
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- **Edge 90+** (Windows testing)
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**JavaScript Requirements:**
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- ES2020+ features acceptable
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- No IE11 support required
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- Modern async/await patterns preferred
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## User Experience Requirements
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### Success Metrics (Must Validate)
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- [ ] Task creation completes in ≤3 steps
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- [ ] All assigned tasks visible without scrolling on 1440px desktop
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- [ ] Form validation provides clear, actionable error messages
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- [ ] Mobile touch targets meet accessibility guidelines (44px minimum)
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### Accessibility Compliance (WCAG 2.1 AA)
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- **Keyboard Navigation:** All interactions accessible via keyboard
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- **Screen Reader Support:** Proper ARIA labels and landmarks
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- **Color Contrast:** 4.5:1 minimum ratio for normal text
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- **Focus Management:** Visible focus indicators for all interactive elements
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**Testing Requirements:**
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- Manual keyboard-only navigation testing
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- Screen reader testing (NVDA or VoiceOver)
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- Color contrast validation tools
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- Browser zoom testing up to 200%
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### Error State Handling
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**Required Error Scenarios:**
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- Network connection lost during task creation
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- Invalid form data submission
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- Unauthorized access attempts
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- Task assignment to non-existent user
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- Blocked task status explanations
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**Error Message Principles:**
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- Clear, jargon-free language
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- Specific guidance for resolution
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- Non-blocking notifications where possible
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- Consistent styling and placement
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## Development Setup Requirements
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### Environment Configuration
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```bash
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# Required Node.js version
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node --version # 18.x or 20.x LTS
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# Package manager
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npm --version # 8.x+ or yarn 1.22+
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# Development server
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npm run dev # Hot reload on localhost:3000
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npm run build # Production build
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npm run test # Unit and integration tests
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```
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### Recommended Project Structure
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```
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frontend/
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├── public/
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│ └── index.html
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├── src/
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│ ├── components/
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│ │ ├── TaskList/
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│ │ ├── TaskForm/
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│ │ └── common/
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│ ├── services/
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│ │ └── api.js
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│ ├── styles/
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│ │ └── main.css
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│ └── App.js
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├── tests/
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│ ├── components/
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│ └── integration/
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└── package.json
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```
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### Required Dependencies
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**Core Framework:** React 18+ or Vue 3+
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**HTTP Client:** Axios or native fetch with error handling
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**Form Management:** React Hook Form or Vue Formulate
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**Date Handling:** date-fns or Day.js (not Moment.js)
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**Testing:** Jest + React Testing Library or Vue Test Utils
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**Accessibility:** @axe-core/react or vue-axe
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## Validation and Testing Strategy
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### Development Phase Testing (Week 2-3)
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1. **Component Unit Tests** — Isolated component behavior
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2. **Form Validation Tests** — All input scenarios and error states
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3. **Responsive Layout Tests** — Desktop and mobile breakpoints
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4. **Accessibility Tests** — Automated axe-core scanning
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### Integration Phase Testing (Week 4)
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1. **API Integration Tests** — Real backend communication
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2. **End-to-End Scenarios** — Complete user workflows
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3. **Cross-Browser Testing** — All supported browsers
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4. **Performance Testing** — Initial page load and interaction responsiveness
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### Acceptance Criteria
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- [ ] All mockups implemented with ≤5px design variance
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- [ ] All API endpoints integrated with proper error handling
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- [ ] All accessibility requirements verified
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- [ ] All browsers render consistently
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- [ ] Performance budget met (3s initial load, 1s interactions)
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## Handoff to Backend Team
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**Frontend Completion Deliverables:**
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- Production-ready SPA build artifacts
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- API specification with actual usage patterns
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- Authentication flow requirements
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- Database schema requirements based on actual UI needs
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- Performance and security testing results
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**Backend Interface Contract:**
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- All API endpoints documented with request/response examples
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- Authentication token format and validation requirements
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- Error response format standardization
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- File upload requirements (if any added during development)
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## Next Steps
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1. **Frontend Team:** Begin environment setup and component development
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2. **Backend Team:** Prepare development environment and API structure
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3. **QA Team:** Set up testing environments and automation
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4. **Manager:** Schedule weekly progress reviews and risk assessment
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**Weekly Check-ins:** Mondays 10 AM for progress, blockers, and risk updates
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**Emergency Escalation:** Direct to Sam for scope or timeline concerns
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---
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**Architecture Phase Complete** ✅
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**Ready for Frontend Development** ✅
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**All design artifacts committed to:** `sam/taskflow` repository
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