requirements.txt

python-chess>=1.999
anthropic>=0.40.0
httpx>=0.25.0
matplotlib>=3.5
markdown>=3.4
# Verify TLS via the OS-native trust store (Windows SChannel / macOS / Linux).
# Needed on Python 3.11+ (OpenSSL 3.x) behind a TLS-intercepting proxy whose CA
# the OS trusts but OpenSSL rejects; harmless on a clean host. See narrator._make_http_client.
truststore>=0.9

# Greco Web — local browser version (run_greco_web.bat -> web/main.py, FastAPI)
fastapi>=0.110
uvicorn[standard]>=0.29
python-multipart>=0.0.9
jinja2>=3.1

# Greco Web — auth + database ORM
bcrypt>=4.0           # password hashing for user accounts (used directly, not via passlib)
starlette>=0.36       # SessionMiddleware (transitive via fastapi, listed for clarity)
itsdangerous>=2.1     # session-cookie signing — SessionMiddleware needs it, but it is an
                      # OPTIONAL starlette extra (starlette[full]), so it must be listed here
sqlalchemy>=2.0       # ORM layer; SQLite locally, PostgreSQL on Render (Phase 7)
alembic>=1.13         # schema migrations
psycopg2-binary>=2.9  # PostgreSQL driver (Phase 7 deploy on Render)

# Greco Web — sharing features
pyngrok>=7.2      # "Share now" ephemeral public URL via ngrok tunnel
boto3>=1.34       # "Publish permanently" upload to Cloudflare R2 (S3-compatible)