neurokeeper v0.3.0 (renamed from claude-harness)

Project renamed: claude-harness -> neurokeeper. The bare name claude-harness was already taken on PyPI + npm and saturated on GitHub (a 2,886-star claude-code-harness and many more), and vault* alternatives would have tied the project to Obsidian -- against the backend-agnostic / Obsidian-exit design. neurokeeper = neural/second-brain + caretaker: it tends the synapses of your knowledge base (the wikilink/backlink graph), works across any markdown KB, and the name is free on PyPI/npm/crates. No functional changes since v0.2.2 -- the package, the neurokeeper CLI command, the plugin + marketplace name, and all docs/URLs are renamed. Install: /plugin marketplace add https://github.com/Wombat164/neurokeeper or pipx install git+https://github.com/Wombat164/neurokeeper. Docs: https://wombat164.github.io/neurokeeper/