logseq-db-plugin-api-skill

Essential knowledge for developing Logseq plugins for DB (database) graphs. Layered: (1) authoritative upstream docs mirrored from logseq/logseq master, (2) production-tested patterns from logseq-checklist v1.0.0, (3) related skills (Datascript schema, Electron debugging). Covers core APIs, event-driven updates, multi-layered tag detection, property iteration, advanced query patterns.