Convert new paper PDFs in a literature folder to Markdown, enrich each paper's metadata from Crossref (volume, issue, pages, publisher), and write a local BibTeX sidecar — so the reference library stays current for citation checks and hallucination defense. Reconcile is idempotent — only PDFs without a matching .md are converted (existing .md files are skipped); raw PDFs are never modified. Delegates the actual conversion to the gemini-pdf skill (Antigravity CLI / agy vision pathway). Triggers include "sync the literature folder", "convert new literature PDFs", "I dropped a paper in literature", "update the reference library", "generate bibtex for my papers", "backfill th…