Fix docs build by adding missing dependencies

[Copilot]

The documentation build failed because conf.py referenced extensions and themes not declared in requirements_docs.txt.

Changes

• Added nbsphinx to requirements_docs.txt (Jupyter notebook integration extension)
• Added furo to requirements_docs.txt (Sphinx theme)

Verification

Documentation now builds successfully, generating 159 HTML pages:

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• docs.python.org
  • Triggering command: /usr/bin/python3 /home/REDACTED/.local/bin/sphinx-build -M html . _build (dns block)
• docs.scipy.org
  • Triggering command: /usr/bin/python3 /home/REDACTED/.local/bin/sphinx-build -M html . _build (dns block)
• matplotlib.org
  • Triggering command: /usr/bin/python3 /home/REDACTED/.local/bin/sphinx-build -M html . _build (dns block)
• networkx.org
  • Triggering command: /usr/bin/python3 /home/REDACTED/.local/bin/sphinx-build -M html . _build (dns block)
• numpy.org
  • Triggering command: /usr/bin/python3 /home/REDACTED/.local/bin/sphinx-build -M html . _build (dns block)
• pandas.pydata.org
  • Triggering command: /usr/bin/python3 /home/REDACTED/.local/bin/sphinx-build -M html . _build (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Understand why docs do not build. Then, build them. Use incremental commits if needed.

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.