BTST Backend Plugin Development

File structure

src/plugins/{name}/
  api/
    plugin.ts        ← defineBackendPlugin entry
    getters.ts       ← read-only DB functions (no HTTP context)
    mutations.ts     ← lower-level write DB functions
    operations.ts    ← validated operations, permission facts, lifecycle
    index.ts         ← re-exports getters + mutations + types
  query-keys.ts      ← React Query key factory

Rules