feat: initial HarborForge project structure

- Docker Compose with MySQL + FastAPI backend
- Issue model with RESOLUTION type (for agent deadlock resolution)
- Project, User, Comment models
- Basic CRUD API endpoints
- .env.example for configuration

backend/requirements.txt

@@ -0,0 +1,11 @@
+fastapi==0.109.0
+uvicorn[standard]==0.27.0
+sqlalchemy==2.0.25
+pymysql==1.1.0
+pydantic==2.5.3
+pydantic-settings==2.1.0
+python-jose[cryptography]==3.3.0
+passlib[bcrypt]==1.7.4
+python-multipart==0.0.6
+alembic==1.13.1
+python-dotenv==1.0.0