SC-1 smoke revealed flat.recommended enables react/react-in-jsx-scope (error),
while the legacy recommended disables it. This codebase uses jsx:"react-jsx"
(React 17+ automatic transform) so React does not need to be in scope. Disable
the rule explicitly alongside react/prop-types in the pwa-react config block.
Also proved both gate halves:
- pnpm lint exits 1 on no-floating-promises deliberate violation (SC-1 lint)
- pnpm format:check exits 1 listing _format-gate-test.ts (SC-1 format)
Both throwaway files deleted; neither staged nor committed.