Site: Discovery upgrade — phase 1. Site-wide tool manifest (/assets/data/tools.json, 126 tools,…

Discovery upgrade — phase 1. Site-wide tool manifest (/assets/data/tools.json, 126 tools, each with consumes / produces / related / jobs metadata) now powers a new homepage "New on the menu" / 新着 strip showing the 4 most recently added tools, plus per-tool privacy badges (◖ 100% client-side / ◗ server-assisted) on the /tools/ listing. Editorial only — no analytics, no tracking, no usage telemetry.