- Add AccountType, NormalBalance, PeriodStatus enums to schema
- Add Account model with tenant scoping, code/name/type/normalBalance/parentId
- Add AccountingPeriod model with year/month/status/closedAt/closedById
- Create ISP_CHART_OF_ACCOUNTS with 28 accounts across all 5 types (1000-5000 ranges)
- Create accounting-period.ts with getOpenPeriod, closePeriod, isDateInClosedPeriod
- Extend TENANT_SCOPED_MODELS with account and accountingPeriod
- Add full query extension blocks for account and accountingPeriod in withTenantContext
- Run migration: 20260304144656_add_accounting_models
- Create src/lib/prisma-tenant.ts:
- withTenantContext(tenantId) / createTenantPrisma — Prisma $extends client
- Intercepts findMany, findFirst, findUnique, create, createMany, update,
updateMany, delete, deleteMany, upsert, count, aggregate, groupBy on User
- Auto-injects tenantId filter on all reads, writes, and deletes
- setTenantRLS() helper for explicit RLS enforcement in transactions
- TENANT_SCOPED_MODELS constant for future extensibility
- Create prisma/migrations/20260304104214_initial_schema — baseline migration
capturing schema created by initial db push
- Create prisma/migrations/20260304104245_add_rls_policies:
- ALTER TABLE User ENABLE ROW LEVEL SECURITY
- CREATE POLICY tenant_isolation_user USING app.current_tenant_id session var
- Defense-in-depth architecture comments explaining primary vs secondary enforcement
- Create src/lib/__tests__/tenant-isolation.test.ts (6 tests, all passing):
- Test 1: Tenant A context returns only Tenant A's users (zero from B)
- Test 2: Tenant B context returns only Tenant B's users (zero from A)
- Test 3: create() auto-sets tenantId, invisible to other tenant
- Test 4: findUnique by Tenant B's ID under Tenant A context returns null
- Additional: findFirst cross-tenant blocked, count() is tenant-scoped
