Set up all directories from the spec's Project Structure section:
- backend/ with routers/, engine/adapters/, engine/scorers/, mcp/,
websocket/, tests/ (all with __init__.py)
- frontend/src/ with pages/, components/, api/ (.gitkeep)
- docker/ (.gitkeep)
- alembic/versions/ (.gitkeep)
Add README.md with project description, quick-start instructions, and
AGPL-3.0 license badge. Add .gitignore for Python, Node, and Docker
artifacts. Include existing CLAUDE.md, spec, docker-compose.yml, and
env.example.
