nx_perma_mine.nx

nx_perma_mine.nx -- LIB: GRIND the permaculture corpus into structured AFFORDABILITY facts (operator: "grind this as part of our affordability improvement"). Two extractions over the license-clean perma_*.raw corpus: 1. COMPANION PLANTING -- crop co-occurrence in the corpus = which crops to grow together for better yield (more food per square foot = more affordability). Promoted to garden:companion:<a>:<b>. 2. SOIL-IMPROVEMENT RANKING -- how often each cheap soil practice (compost, mulch, cover crop, ...) appears = an evidence-ranked list of the cheapest ways to build fertility (free compost beats bought fertilizer). FACTS-ONLY + LICENSE-GATED (reuses the recipe miner fm_* + the provenance gate). This GROWS the researcher from a fetcher into a synthesizer (signal extraction), per the grow-the-researcher doctrine. license_tier: ORIGINAL