# DOX — packages/client/src/test-support

Files in this directory. One row per source file.

| File | Purpose |
|------|---------|
| `runConfigHarness.tsx` | `ModelConfigProvider` test harness. Exports `makeModels`, `makeRunConfig`, `RunConfigHarness`. See change: openspec-dialog-model-effort-selector. |
| `virtualizer-jsdom.ts` | Vitest `setupFiles` layout shim + scoped 160 ms TanStack callback drain. Enforced call-site invariant and flake triage → see `virtualizer-jsdom.ts.AGENTS.md` |