update-referenceslisted

# Update references (research paper search) This skill turns "find me what's been written about this" into a small, repeatable pipeline: read what the user is working on, search arXiv (and, for off-arXiv work, Semantic Scholar or Google Scholar) for related papers, download the relevant ones, read them, write a summary per paper, and keep a Citation Style Language (CSL) YAML database so work is never repeated and versions stay current. The standing interests are LLMs, AI agents, finite state machines, and declarative agent patterns — the territory of spindle (github.com/petar-djukic/spindle), a Go state-machine engine for agentic loops. Lean toward those topics, but always sharpen the search using whatever the current working directory is actually about. ## Where things live This skill is context-aware. It runs from the directory the user is working in, and it stores its outputs there — not in a fixed global location. Resolve paths like this: - **Database:** `references.yaml` under the current working directory, unless an existing one is already nearby (look for a `references.yaml` at or above the working directory and reuse it). Pass the chosen path as `--db` to every script call so search, fetch, and record all agree. If only a legacy `arxiv/papers.yaml` exists, the scripts read it transparently and convert on next write. - **PDFs:** `<db-dir>/pdfs/` (transient — they exist to be read; they don't need to be committed). The script resolves this **relative to t