v0.1.1

Maintenance release — no changes to the package's code or behaviour.

• The release workflow now publishes the container image,
  ghcr.io/cj-coding-apps/docugraph:v0.1.1 (and :latest). 0.1.0 has
  no image: the workflow built the tag from the repository name with
  its original capitalisation, which GHCR rejects.
• pyproject.toml declares project URLs, so the PyPI page links to
  the repository, issues and releases.

Everything in the 0.1.0 notes still applies: Python 3.11–3.13 on
Linux, kuzu==0.11.3 as a migration boundary, local embeddings by
default.