nx_price_extract.nx

nx_price_extract.nx -- the Nishi BROWSER's price detector: find the price on a rendered shopping page so the "before you buy" check (nx_purchase) can show what you have vs what it costs. Sovereign, deterministic (no JS, no scraping libraries): scan the page text for $-amounts and take the largest (the product price, usually -- vs $9.99 shipping). Reuses the same exact money-parsing as nx_doc_extract. The browser feeds this its rendered DOM text (nx_html_to_text / nx_dom_query). Honest scope: "largest $-amount" heuristic; currency/locale + labelled-price selection are later rungs. No floats, no hardware writes. license_tier: ORIGINAL