Core MVP plan from claude.

Week by week plan for claude.

Update CLAUDE.md

Create backend.

Task API.

Initial frontend.

plan/01_CORE_MVP/plan.md

@@ -0,0 +1,141 @@
+# Phase 1: Core MVP - Task Management Only
+
+## Feature 1: Task Management
+
+### Overview
+Implement the foundational task management system with basic CRUD operations and essential properties.
+
+### Task Properties (from PRD)
+- Title (required)
+- Description (optional, markdown supported)  
+- Priority (High/Medium/Low)
+- Due date (optional)
+- Status (Todo/In Progress/Done/Someday)
+
+### Technical Architecture
+
+#### Backend: Rust + Axum + SQLx
+- RESTful API for task operations
+- SQLite for development database
+- Type-safe database queries
+
+#### Database Schema
+```sql
+CREATE TABLE tasks (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    title VARCHAR NOT NULL,
+    description TEXT,
+    priority VARCHAR(10) DEFAULT 'medium', -- high, medium, low
+    due_date DATE,
+    status VARCHAR(20) DEFAULT 'todo', -- todo, in_progress, done, someday
+    created_at TIMESTAMP DEFAULT NOW(),
+    updated_at TIMESTAMP DEFAULT NOW(),
+    completed_at TIMESTAMP
+);
+```
+
+#### Frontend: Vite + React + Tailwind
+- Single-page task management interface with React Router
+- Quick capture form with React hooks
+- Task list with inline editing using React components
+- Mobile-responsive design
+
+### Testing Strategy
+
+#### Backend Testing
+- **Unit Tests**: Test individual functions and models using `cargo test`
+- **Integration Tests**: Test API endpoints with test database
+- **Database Tests**: Test SQLx queries and migrations
+- **Test Coverage**: Aim for >80% code coverage using `cargo tarpaulin`
+
+#### Frontend Testing
+- **Unit Tests**: Component testing with Vitest and React Testing Library
+- **Integration Tests**: User interaction flows with Playwright
+- **Accessibility Tests**: Screen reader compatibility and keyboard navigation
+- **Mobile Testing**: Responsive design validation on various screen sizes
+
+#### Test Database
+- Separate SQLite test database that's reset between test runs
+- Test fixtures for common task scenarios
+- Database migration testing
+
+### Implementation Plan
+
+#### Week 1: Backend Foundation
+1. **Project Setup**
+   - Initialize Rust project with Axum
+   - Setup SQLx with SQLite
+   - Create database migration for tasks table
+   - Basic server with health check endpoint
+   - **Testing**: Setup test framework and test database
+
+2. **Task API Endpoints**
+   - `POST /api/tasks` - Create new task
+   - `GET /api/tasks` - List all tasks
+   - `GET /api/tasks/{id}` - Get single task
+   - `PUT /api/tasks/{id}` - Update task
+   - `DELETE /api/tasks/{id}` - Delete task
+   - `PATCH /api/tasks/{id}/status` - Update task status
+   - **Testing**: Integration tests for all endpoints
+
+#### Week 2: Frontend Foundation  
+1. **Vite + React Setup**
+   - Initialize Vite project with React template
+   - Configure Tailwind CSS
+   - Setup React Router for navigation
+   - Setup API client utilities
+   - **Testing**: Setup Vitest, React Testing Library, and Playwright
+
+2. **Core React Components**
+   - TaskCard component with React hooks
+   - TaskForm component (create/edit) with form handling
+   - TaskList component with state management
+   - Quick capture input component
+   - **Testing**: Unit tests for each component using React Testing Library
+
+#### Week 3: Integration & Polish
+1. **Task Management Interface**
+   - Task creation form with all properties
+   - Task list with status filtering
+   - Inline task editing
+   - Task deletion with confirmation
+   - **Testing**: End-to-end user workflow tests
+
+2. **Mobile Responsiveness**
+   - Touch-friendly controls
+   - Responsive layout
+   - Mobile-optimized forms
+   - **Testing**: Mobile browser testing and accessibility validation
+
+### Success Criteria
+- [ ] Users can create tasks with all properties
+- [ ] Tasks display in a clean, scannable list
+- [ ] Users can edit task properties inline
+- [ ] Users can update task status (todo → in_progress → done)
+- [ ] Users can delete tasks
+- [ ] Interface works well on mobile devices
+- [ ] Quick capture allows rapid task entry
+- [ ] **Testing**: All tests pass and maintain >80% backend coverage
+- [ ] **Testing**: E2E tests cover core user workflows
+- [ ] **Testing**: Accessibility tests pass
+
+### Definition of Done
+- Working backend API with proper error handling
+- Responsive frontend with mobile support
+- All task CRUD operations functional
+- Basic form validation
+- **Comprehensive test suite with good coverage**
+- **Automated testing pipeline setup**
+- Manual testing completed on desktop and mobile
+
+### Test Commands
+```bash
+# Backend tests
+cargo test
+cargo tarpaulin --out Html  # Coverage report
+
+# Frontend tests  
+npm test                    # Unit tests with Vitest
+npm run test:e2e           # End-to-end tests with Playwright
+npm run test:coverage      # Coverage report
+```