## Summary
The global `jotaiStore` singleton was shared across all tests without
reset, leaking state between test suites and causing unbounded heap
growth within each Jest worker.
- `getJestMetadataAndApolloMocksWrapper` now creates a **fresh Jotai
store per wrapper** (equivalent of RecoilRoot isolation), so each test
gets clean state
- Added `workerIdleMemoryLimit: '512MB'` to recycle workers that still
accumulate memory
- Set `maxWorkers: 3` for CI
## Performance
Measured on 48 test suites (command-menu + views + object-record hooks),
single worker:
| Metric | Before | After |
|---|---|---|
| Peak heap | **1519 MB** | **~530 MB** (-65%) |
| Final heap | **1519 MB** | **437 MB** (-71%) |
| Growth pattern | Monotonic (never freed) | Bounded sawtooth (recycled
at 512MB) |
