effectstream

Scaffold a new Effectstream template (a multi-chain blockchain app — sync node + state machine + on-chain contracts + optional batcher/frontend/tests/Docker) following the canonical Bun-monorepo layout. Also handles migrating older templates from `@paimaexample/*` or `@paima/*` (paima-engine-v1) layouts into the current `@effectstream/*` shape. Use this skill whenever the user wants to create, scaffold, generate, bootstrap, or start a new Effectstream / Paima app, dApp, game template, or multi-chain template — even if they don't say "template" — and whenever they want to upgrade, modernize, port, or migrate an existing Paima or Effectstream project to the v2 layout.