Testing

Layer	Tool	Where	Run
TS unit	Vitest (node env by default; add `// @vitest-environment jsdom` for components)	`src/<area>/tests/*.test.ts`	`pnpm test`
TS contract	Vitest	`src/server/tests/openapi.contract.test.ts`, `src/hardware/tests/contract.fixtures.test.ts`	`pnpm test`
Browser	Node smoke now; Playwright `*.e2e.ts` in Phase 4.3	`tests/browser/`	`pnpm build && pnpm test:browser`
Installer	Vitest, sourcing `scripts/install-hal` against a scratch root with stub `systemctl`/`mount`/`swapon`	`tests/scripts/`	`pnpm test`
Rust	cargo test (+ llvm-cov in CI)	in-module `#[cfg(test)]`	`pnpm hal:test`
Mutation	Stryker, weekly + `mutation-test` label	`stryker.config.mjs`	`pnpm test:mutation`
Knowledge	OKF validator	`knowledge/`	`python scripts/validate_knowledge.py`

Coverage gates live in Codecov (codecov.yml), flags javascript and rust.

Imported from docs/testing/index.md in seedypod/core. Edit it there, not here.