Cheat Sheet
| Question | Core Idea | Senior Signal |
|---|---|---|
| Q186 | Library governance | Treat shared components as an internal product with versioned contracts. |
| Q187 | Migration | Inventory, pilot, observe, roll out, and clean up in controlled slices. |
| Q188 | Observability | Tie errors, performance, and user-flow telemetry to releases. |
| Q189-Q190 | Security and capstone | React escapes by default, but architecture must secure raw content, auth, and operations. |