## Sentry
- Issue: PHP-LARAVEL-1T
- URL: https://whisper-money.sentry.io/issues/PHP-LARAVEL-1T
## Root cause
Cashflow breakdown UI assumed every API row has a category object.
Production returned a breakdown row with `category: null`, so rendering
read `item.category.icon` and crashed.
## Fix
- Allow breakdown rows to carry nullable category/category_id.
- Render null categories as Uncategorized with HelpCircle/gray fallback.
- Add focused Vitest regression.
- Enable Wayfinder Vite plugin in Vitest so components importing
generated actions resolve in tests.
## Verification
- `npm test -- resources/js/components/cashflow/breakdown-card.test.tsx`
- `npx prettier --write
resources/js/components/cashflow/breakdown-card.tsx
resources/js/components/cashflow/breakdown-card.test.tsx
resources/js/hooks/use-cashflow-data.ts vitest.config.ts`
- `npx eslint resources/js/components/cashflow/breakdown-card.tsx
resources/js/components/cashflow/breakdown-card.test.tsx
resources/js/hooks/use-cashflow-data.ts vitest.config.ts --fix`
## Notes
- `npm run types` currently fails on existing unrelated TypeScript
errors across account, transaction, chart, auth, crypto, and dexie
files.
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