Covers what Nexa is, which existing services it depends on, what is
genuinely missing (TEI, Qdrant collection, GraphDB), and alternative
tool choices for embeddings, web-search, and the graph pillar.
Repo: https://git.nuclide.systems/fkrebs/nexa
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>