dsh-longevity-coach: Turning 64 pieces of population evidence into three daily habits

A DSH client plugin maintained by sambazhu classifies the 64 population-based evidence items from geekan/HowToLiveLonger into levels A-D. It provides five tabs in the sidebar: "Today's Three Things", "Daily Timeline", "9 Scenarios", "Evidence Retrieval", and "Check-in Tracking". The plugin also registers five retrieval tools—longevity_today, longevity_search, longevity_detail, longevity_scene, and longevity_checkin—along with a system prompt that prioritizes retrieval for the session model. When topics involve sleep, diet, exercise, medical check-ups, or supplements, it first states the evidence level and explicitly indicates insufficient evidence for levels C and D. "Today's Three Things" rotate based on coprime buckets with a cycle of 819 days, and check-in records are saved locally. This plugin requires the DSH Web version (>= 0.2.1-rc.1) and can be installed via `dsh plugin add github:sambazhu/dsh-longevity-coach`. The client fetches data from the Host at `/longevity/api/*`. The plugin runs with dsh process permissions; source code and license should be checked before installation. The content consists of population evidence rather than personal diagnostic advice.