Per code-review suggestion: add a brief comment explaining why module-level sqlite/testDb/app reassignment works (mock getter closes over the current binding) and what would break it (top-level it, .concurrent describe). Prevents a future foot-gun.
Per code-review suggestion: add a brief comment explaining why module-level sqlite/testDb/app reassignment works (mock getter closes over the current binding) and what would break it (top-level it, .concurrent describe). Prevents a future foot-gun.