Have claude update the plan.

CLAUDE.md

@@ -29,6 +29,26 @@ Captain's Log is a GTD-inspired personal task management system designed to mini
 - **Dev Database**: SQLite for easy setup and portability
 - **Production Database**: PostgreSQL for scalability
 - **Authentication**: Simple session-based auth (single user)
+- **Architecture**: Active Record pattern with models handling persistence
+- **Testing**: Unit tests + Hurl API integration tests
+
+#### Backend Project Structure
+```
+backend/
+├── src/
+│   ├── main.rs                 # Application entry point with health endpoint
+│   ├── database/
+│   │   ├── mod.rs              # Database module exports
+│   │   └── connection.rs       # Database connection utilities
+│   ├── models/
+│   │   ├── mod.rs              # Models module
+│   │   └── task.rs             # TaskModel with CRUD methods
+│   └── services/
+│       ├── mod.rs              # Error handling and exports
+│       └── tasks.rs            # HTTP handlers for task endpoints
+├── tests/api/                  # Hurl API integration tests
+└── migrations/                 # SQLx database migrations
+```
 
 ### Frontend: Vite + React + Tailwind CSS
 - **Build Tool**: Vite for fast development and optimized builds
@@ -41,10 +61,11 @@ Captain's Log is a GTD-inspired personal task management system designed to mini
 
 ### Core Data Models
 ```sql
--- Tasks (Phase 1 MVP)
-tasks (id, title, description, priority, due_date, status, created_at, updated_at, completed_at)
+-- Tasks (Phase 1 MVP - Current Implementation)
+tasks (id, title, description, status, created_at, updated_at, completed_at)
 
 -- Future phases will add:
+-- priority and due_date fields to tasks table
 -- projects (id, name, description, color, status, created_at, updated_at)
 -- contexts (id, name, description, color, icon)
 -- task_contexts (task_id, context_id)
@@ -56,10 +77,15 @@ tasks (id, title, description, priority, due_date, status, created_at, updated_a
 ### Testing
 ```bash
 # Backend tests
-cargo test
-cargo tarpaulin --out Html  # Coverage report
+just test-unit              # Unit tests (cargo test)
+just test-coverage          # Coverage report (tarpaulin HTML)
+just test-integration       # API tests (Hurl)
 
-# Frontend tests  
+# Individual commands
+cargo test                  # Direct unit test execution
+hurl --test tests/api/*.hurl # Direct API test execution
+
+# Frontend tests (when implemented)
 npm test                    # Unit tests
 npm run test:e2e           # End-to-end tests
 npm run test:coverage      # Coverage report
@@ -68,21 +94,30 @@ npm run test:coverage      # Coverage report
 ### Development Server
 ```bash
 # Backend (Rust server)
-cargo run
+just dev                    # Run backend server (cargo run)
 
-# Frontend (Vite dev server) 
-npm run dev
+# Other backend commands
+just build                  # Build project
+just migrate               # Run database migrations
+just reset-db              # Reset database
+just fmt                   # Format code
+just lint                  # Run clippy
+
+# Frontend (when implemented)
+npm run dev                # Vite dev server
 ```
 
-## Current Phase: Core MVP
+## Current Phase: Core MVP Backend ✅
 
-**Focus**: Basic task management with CRUD operations
-- Task properties: title, description, priority, due_date, status
-- Simple web interface with mobile responsiveness
-- Testing framework setup with >80% backend coverage target
-- RESTful API endpoints for all task operations
+**Status**: Backend implementation completed
+- ✅ Task properties: title, description, status, timestamps
+- ✅ RESTful API endpoints for all task operations
+- ✅ Testing framework with unit tests and API integration tests
+- ✅ Coverage reporting setup (currently 32.41%)
+- ⏳ Frontend implementation (next phase)
 
-See `/plan/01_CORE_MVP/plan.md` for detailed implementation plan.
+See `/plan/01_CORE_MVP/backend.md` for implementation details.
+See `/plan/future_improvements.md` for architectural enhancement opportunities.
 
 ## Future Phases
 

backend/.gitignore

@@ -1,4 +1,5 @@
 target
+coverage
 
 *.db
 *.db-shm

backend/Cargo.toml

@@ -16,3 +16,5 @@ tracing = "0.1.41"
 tracing-subscriber = "0.3.19"
 uuid = { version = "1.18.0", features = ["serde", "v4"] }
 
+[dev-dependencies]
+cargo-tarpaulin = "0.31"

justfile

@@ -48,3 +48,6 @@ test-integration:
     echo "Running integration tests..."
     hurl --test --error-format long --variable host=http://localhost:3000 tests/api/*.hurl
 
+test-coverage:
+    cargo tarpaulin --out Html --output-dir coverage
+

plan/future_improvements.md

@@ -0,0 +1,50 @@
+# Future Improvements
+
+This document tracks architectural improvements and refactoring opportunities identified during development.
+
+## Architecture Refactoring
+
+### Repository + Service Pattern Migration
+
+**Current State**: Using Active Record pattern where TaskModel handles its own persistence and HTTP handlers contain business logic directly.
+
+**Future Improvement**: Migrate to Repository + Service pattern for better separation of concerns:
+
+```rust
+// Repository trait for data access abstraction
+trait TaskRepository {
+    async fn create(&self, task: &NewTask) -> Result<Task>;
+    async fn find_by_id(&self, id: Uuid) -> Result<Option<Task>>;
+    async fn update(&self, task: &Task) -> Result<Task>;
+    async fn delete(&self, id: Uuid) -> Result<()>;
+    async fn list_all(&self) -> Result<Vec<Task>>;
+}
+
+// Service layer for business logic
+struct TaskService {
+    repository: Box<dyn TaskRepository>,
+}
+
+impl TaskService {
+    async fn create_task(&self, title: String, description: Option<String>) -> Result<Task> {
+        // Input validation
+        // Business rules (e.g., auto-set completed_at when status changes)
+        // Call repository
+    }
+}
+```
+
+**Benefits**:
+- Better testability through repository mocking
+- Centralized business logic in service layer
+- Cleaner separation between data access, business logic, and HTTP handling
+- Easier to add complex business rules as the application grows
+
+**Implementation Plan**:
+1. Create TaskRepository trait and SqliteTaskRepository implementation
+2. Move database operations from TaskModel to repository
+3. Create TaskService with business logic
+4. Update HTTP handlers to use services instead of models directly
+5. Add comprehensive unit tests for service layer with mocked repositories
+
+**Priority**: Medium - Good for maintainability as the codebase grows, but current Active Record pattern works fine for MVP scope.