polizy-setup

| Critical | Install package | npm install polizy | | Critical | Define schema | Relations, actions, mappings | | Critical | Choose storage | InMemory (dev) or Prisma (prod) | | Important | Test setup | Verify with a permission check | | Optional | Configure options | Depth limits, logging |

| Persistence | No (lost on restart) | Yes | | Multi-instance | No | Yes | | Setup | Zero config | Requires Prisma model | | Performance | Fastest | Database-dependent | | Use case | Testing, dev | Production |

| "Cannot find module 'polizy'" | Run npm install polizy | | TypeScript errors in schema | Ensure defineSchema is imported from "polizy" | | Prisma model not found | See PRISMA-SETUP.md | | Permission check returns false | Verify relation is in actionToRelations for that action |