Hackathon II - The Evolution of Todo

Mastering Spec-Driven Development & Cloud-Native AI

This project demonstrates the evolution of a software application from a simple console app to a fully-featured, cloud-native AI chatbot deployed on Kubernetes. Built using Spec-Driven Development with Claude Code and Spec-Kit Plus.

Project Overview

This is a monorepo containing multiple phases of the Todo application evolution:

• ✅ Phase I: Console App (Complete)
• 🚧 Phase II: Full-Stack Web Application (In Progress)
• ⏳ Phase III: AI Chatbot with MCP Server
• ⏳ Phase IV: Local Kubernetes Deployment
• ⏳ Phase V: Advanced Cloud Deployment

Quick Start

Phase 1 - Console App (Completed)

cd phase-1
uv venv
source .venv/bin/activate  # Windows: .venv/Scripts/activate
uv sync
python3 src/main.py

Phase 2 - Full-Stack Web App (In Progress)

Frontend (Next.js)

cd frontend
npm install
npm run dev
# Opens on http://localhost:3000

Backend (FastAPI)

cd backend
uv venv
source .venv/bin/activate
uv sync
uvicorn main:app --reload
# Opens on http://localhost:8000

Project Structure

Hackathon II/
├── phase-1/              # ✅ Phase I: Python Console App (Complete)
│   ├── src/              # Source code
│   ├── tests/            # Unit tests
│   └── README.md         # Phase 1 documentation
│
├── frontend/             # 🚧 Phase II: Next.js Frontend (In Progress)
│   ├── app/              # Next.js App Router pages
│   ├── components/       # React components
│   ├── lib/              # API client and utilities
│   └── CLAUDE.md         # Frontend development guidelines
│
├── backend/              # 🚧 Phase II: FastAPI Backend (In Progress)
│   ├── routes/           # API endpoints
│   ├── models.py         # Database models
│   ├── middleware/       # Authentication middleware
│   └── CLAUDE.md         # Backend development guidelines
│
├── specs/                # Centralized Specifications
│   ├── overview.md       # Project overview
│   ├── architecture.md   # System architecture
│   ├── features/         # Feature specifications
│   ├── api/              # API specifications
│   ├── database/         # Database schemas
│   └── ui/               # UI specifications
│
├── history/              # Prompt History Records & ADRs
│   ├── prompts/          # Development history
│   └── adr/              # Architectural Decision Records
│
├── .specify/             # Spec-Kit Plus templates and scripts
│   ├── memory/
│   │   └── constitution.md  # Project principles
│   └── templates/        # Spec templates
│
├── CLAUDE.md             # Root development guidelines
└── README.md             # This file

Technology Stack

Phase I: Console App ✅

• Language: Python 3.13+
• Package Manager: UV
• UI: Rich (colorful CLI) + Inquirer (interactive menus)
• Storage: JSON file persistence

Phase II: Full-Stack Web App 🚧

• Frontend: Next.js 16+ (App Router), TypeScript, Tailwind CSS
• Backend: FastAPI, Python 3.13+
• Database: Neon Serverless PostgreSQL
• ORM: SQLModel
• Authentication: Better Auth with JWT tokens
• Deployment: Vercel (frontend) + Hugging Face (backend)

Phase III: AI Chatbot ⏳

• UI: OpenAI ChatKit
• AI Framework: OpenAI Agents SDK
• MCP Server: Official MCP SDK
• Database: Neon PostgreSQL (with conversations & messages)

Phase IV: Local Kubernetes ⏳

• Containerization: Docker with Docker AI (Gordon)
• Orchestration: Kubernetes (Minikube)
• Package Manager: Helm Charts
• AIOps: kubectl-ai, kagent

Phase V: Cloud Deployment ⏳

• Cloud Provider: DigitalOcean Kubernetes (DOKS)
• Messaging: Kafka on Redpanda Cloud
• Runtime: Dapr
• CI/CD: GitHub Actions

Features by Phase

Phase I (Complete) ✅

• Add, delete, update, view, mark complete tasks
• Interactive menu with colorful UI
• Command-line interface for scripts
• JSON persistence
• Input validation

Phase II (In Progress) 🚧

• Multi-user authentication (Better Auth + JWT)
• RESTful API with FastAPI
• Responsive web UI with Next.js
• Persistent storage in PostgreSQL
• User isolation and security

Phase III (Planned) ⏳

• Conversational task management
• Natural language understanding
• MCP tools for task operations
• Stateless chatbot with database persistence

Phase IV (Planned) ⏳

• Docker containerization
• Local Kubernetes deployment with Minikube
• Helm charts for package management
• AI-assisted DevOps (kubectl-ai, kagent)

Phase V (Planned) ⏳

• Recurring tasks with automated scheduling
• Due dates and reminders
• Event-driven architecture with Kafka
• Production deployment on DigitalOcean
• Full Dapr integration (Pub/Sub, State, Bindings, Secrets)

Development Approach

Spec-Driven Development (Required)

This project follows Spec-Driven Development:

1. Write specifications in /specs
2. Use Claude Code to generate implementation
3. Refine specs until code is correct
4. Manual coding is not allowed per constitution

Workflow

1. Write Spec → @specs/features/task-crud.md
2. Ask Claude Code → "Implement @specs/features/task-crud.md"
3. Claude Code generates code
4. Test and iterate on spec
5. Create Prompt History Record (PHR)

Documentation

• Hackathon Guide: Complete hackathon requirements
• Constitution: Project principles
• Overview: Project overview and status
• Architecture: System architecture across phases
• Root CLAUDE.md: Monorepo development guidelines
• Frontend CLAUDE.md: Frontend-specific guidelines
• Backend CLAUDE.md: Backend-specific guidelines
• Phase 1 README: Phase 1 documentation

Setup Instructions

Prerequisites

• Python 3.13+ (for backend and Phase 1)
• UV package manager for Python
• Node.js 18+ and npm/pnpm/yarn (for frontend)
• Git for version control
• PostgreSQL (Neon Serverless for Phase 2+)

Environment Variables

Frontend (.env.local)

NEXT_PUBLIC_API_URL=http://localhost:8000
BETTER_AUTH_SECRET=your-shared-secret-here
BETTER_AUTH_URL=http://localhost:3000

Backend (.env)

DATABASE_URL=postgresql://user:password@host/database
BETTER_AUTH_SECRET=your-shared-secret-here
JWT_ALGORITHM=HS256

Important: BETTER_AUTH_SECRET must be identical in both frontend and backend.

Testing

Phase 1

cd phase-1
pytest tests/

Frontend

cd frontend
npm test

Backend

cd backend
pytest tests/

Deployment

Phase 2 Deployment

Frontend to Vercel

1. Push code to GitHub
2. Connect repository to Vercel
3. Set environment variables in Vercel dashboard
4. Deploy automatically on push

Backend to Hugging Face Spaces

1. Create new Space (FastAPI template)
2. Upload backend files
3. Add secrets in Space settings
4. Deploy

Scoring

Phase	Points	Due Date	Status
Phase I	100	Dec 7, 2025	✅ Complete
Phase II	150	Dec 14, 2025	🚧 In Progress
Phase III	200	Dec 21, 2025	⏳ Planned
Phase IV	250	Jan 4, 2026	⏳ Planned
Phase V	300	Jan 18, 2026	⏳ Planned
Total	1,000

Bonus Points

• Reusable Intelligence (Subagents/Skills): +200
• Cloud-Native Blueprints: +200
• Multi-language Support (Urdu): +100
• Voice Commands: +200
• Total Bonus: +600

Contributing

This is an individual hackathon project. Each participant submits separately.

Resources

• Claude Code Documentation
• Spec-Driven Development
• Nine Pillars of AI-Driven Development
• Neon Database
• FastAPI Documentation
• Next.js Documentation

License

This project is part of the Panaversity, PIAIC, and GIAIC Hackathon II.

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Built with Claude Code + Spec-Kit Plus Hackathon II - The Evolution of Todo Version: 2.0.0 | Last Updated: 2025-12-08