chore: clean up readme and add MIT license

README.md

@@ -17,7 +17,7 @@ Two listings are shown side-by-side. You pick the one you prefer, and both recei
 
 ```
 ┌──────────┐        ┌──────────┐        ┌────────────┐
-│ Frontend │──nginx──│ Backend  │────────│ PostgreSQL │
+│ Frontend │─nginx──│ Backend  │────────│ PostgreSQL │
 │ React/TS │  :80   │ FastAPI  │  :5432 │            │
 └──────────┘        └──────────┘        └────────────┘
 ```
@@ -158,35 +158,6 @@ make logs       Tail service logs
 make clean      Remove caches and build artifacts
 ```
 
-## Project structure
-
-```
-├── .env.example                 # Environment variable template
-├── .github/workflows/ci.yaml   # CI pipeline (lint + test)
-├── .pre-commit-config.yaml      # Pre-commit hooks
-├── Makefile                     # Developer commands
-├── docker-compose.yaml          # Container orchestration
-├── backend/
-│   ├── Dockerfile
-│   ├── pyproject.toml           # Python deps and tool config
-│   ├── .sqlfluff                # SQL linter config
-│   ├── app/
-│   │   ├── config.py            # Settings and SQL loader
-│   │   ├── database.py          # DB engine and session
-│   │   ├── elo.py               # ELO calculation
-│   │   ├── main.py              # FastAPI application
-│   │   ├── models.py            # SQLAlchemy ORM models
-│   │   ├── queries.py           # Shared query helpers
-│   │   ├── schemas.py           # Pydantic request/response models
-│   │   ├── routers/             # API route handlers
-│   │   └── sql/                 # SQL query templates
-│   └── tests/                   # Unit tests
-└── frontend/
-    ├── Dockerfile
-    ├── nginx.conf               # Reverse proxy config
-    └── src/                     # React application
-```
-
 ## License
 
-MIT
+[MIT](LICENSE)