nx_research_backlog.nx

nx_research_backlog.nx -- the RESEARCHER's TOPIC BACKLOG (operator: "id like the researcher to be given a backlog to build our library on of topics or terms"). A queue of topics/terms the Researcher works through to GROW the Nishi library -- but smarter than FIFO: it prioritizes by COVERAGE GAP, so the team researches where the library is THINNEST first (comprehensive coverage, not random). Each topic carries: a priority (how much it matters to the team's arcs) and library_hits (how many docs already cover it). gap_score = priority weighted by how UNDER-covered the topic is; the Researcher always pulls the highest-gap PENDING topic, researches it (autonomous loop + polite crawl + corroborate + site-ingest), banks the new docs, and marks it done -- raising that topic's coverage and lowering its future priority. RACI: this is the RESEARCHER's work queue (feeds nx_research_synth / nx_site_ingest). LAWS: struct-free, integer-only. license_tier: ORIGINAL