Restore missing project configuration files

Restored all configuration and documentation files that were missing:
- devenv.nix and devenv.lock for development environment
- README.md, CLAUDE.md, DOCKER.md, WARP.md for documentation
- alembic.ini for database migrations
- requirements.txt for Python dependencies
- Dockerfile, docker-compose.yml, entrypoint.sh for containerization
- build.sh for build automation
- pytest.ini for test configuration

All database concurrency improvements and logging fixes remain intact.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

requirements.txt

@@ -0,0 +1,24 @@
+				pudb
+				ptpython
+				ipython
+				pytest
+				pytest-cov
+				flake8
+				ptpython
+				ipython
+				isort
+				pynvim
+				ruff
+				black
+				sqlalchemy
+				requests
+				fastapi
+				uvicorn
+				jinja2
+				python-multipart
+				bcrypt
+				python-jose
+				passlib
+				alembic
+				aiohttp
+