Spike Review — Vitest + StrykerJS

ℹ️ About the 9 surviving mutants: All 9 survivors are mutations to Prisma include: { … } / select: { … } shape objects (e.g. replacing { select: { id: true, name: true, type: true } } with {} or flipping a boolean field). These survive because the tests mock PrismaClient — the mock returns a pre-canned object regardless of what fields were passed in the include clause, so mutating the query shape doesn't change test output. This is a known, benign limitation of unit-test mocking for Prisma: the real field selection is validated by integration/E2E tests against a live DB. No business logic is uncovered.