Phase 2.3: JWT Authentication implementation

- Implemented JWT-based authentication system with access and refresh tokens
- Added password hashing service using PBKDF2
- Created authentication handlers: register, login, refresh, logout
- Added protected routes with JWT middleware
- Created user profile handlers
- Fixed all compilation errors
- Added integration tests for authentication endpoints
- Added reqwest dependency for testing
- Created test script and environment example documentation

All changes:
- backend/src/auth/: Complete auth module (JWT, password, claims)
- backend/src/handlers/: Auth, users, and health handlers
- backend/src/middleware/: JWT authentication middleware
- backend/src/config/: Added AppState with Clone derive
- backend/src/main.rs: Fixed imports and added auth routes
- backend/src/db/mod.rs: Changed error handling to anyhow::Result
- backend/Cargo.toml: Added reqwest for testing
- backend/tests/auth_tests.rs: Integration tests
- thoughts/: Documentation updates (STATUS.md, env.example, test_auth.sh)

thoughts/STATUS.md

@@ -0,0 +1,49 @@
+# Normogen Backend Development Status
+
+## Completed Phases
+
+- [x] **Phase 2.1** - Backend Project Initialization
+- [x] **Phase 2.2** - MongoDB Connection & Models
+- [x] **Phase 2.3** - JWT Authentication (Completed 2025-02-14)
+
+## In Progress
+
+- **Phase 2.4** - User Registration & Login (Ready for testing)
+
+## Changes in Phase 2.3
+
+### Authentication System
+- JWT-based authentication with access and refresh tokens
+- Password hashing using PBKDF2
+- Protected routes with middleware
+- Token refresh and logout functionality
+
+### Files Modified
+- `backend/src/auth/mod.rs` - Fixed imports
+- `backend/src/auth/password.rs` - Fixed PBKDF2 API usage
+- `backend/src/auth/jwt.rs` - JWT token generation and validation
+- `backend/src/auth/claims.rs` - Custom JWT claims with user roles
+- `backend/src/middleware/auth.rs` - Authentication middleware
+- `backend/src/handlers/auth.rs` - Authentication handlers (register, login, refresh, logout)
+- `backend/src/handlers/users.rs` - User profile handlers
+- `backend/src/handlers/health.rs` - Health check handlers
+- `backend/src/config/mod.rs` - Added AppState with Clone derive
+- `backend/src/main.rs` - Fixed middleware imports and routing
+- `backend/Cargo.toml` - Added reqwest for testing
+- `backend/tests/auth_tests.rs` - Integration tests for authentication
+
+### Testing
+- Integration tests written for all auth endpoints
+- Test script created: `backend/test_auth.sh`
+- Environment example created: `thoughts/env.example`
+
+### Compilation Status
+✅ All compilation errors fixed
+✅ Project compiles successfully (warnings only - unused code)
+
+## Next Steps
+1. Start MongoDB server
+2. Set up environment variables
+3. Run integration tests: `cargo test --test auth_tests`
+4. Start server: `cargo run`
+5. Manual testing: `./backend/test_auth.sh`