Eddi Data

EDDI Manager data & plumbing

AGENTS.md is the authority; this is the working summary for building a screen.

Routing

React Router v7, declarative mode (no data router). Routes are declared in src/app.tsx; pages render through AppLayout's <Outlet />. Resource detail routes carry the version as a query param: /manage/channels/:id?version=2. src/__tests__/route-integrity.test.ts asserts every nav target resolves — add the route and the sidebar entry together.

Server state — TanStack Query v5

One hook file per domain in src/hooks/ (use-channels.ts, use-agents.ts, …). Pages never call the API directly:

const { data: channels, isLoading, error, refetch } = useEnrichedChannelDescriptors();
const deleteMutation = useDeleteChannel();
await deleteMutation.mutateAsync({ id, version });

Filtering/search is client-side useMemo over the query result when the list is small — that is the existing pattern, not a server round-trip per keystroke.

API calls

Use ApiClient (src/lib/api-client.ts) for ordinary JSON — it injects the Keycloak auth header. Base URL is always window.location.origin; never hardcode. Raw fetch is only justified for SSE, binary/blob and text/plain bodies, and must spread api.getAuthHeader() itself — a missing header is a 401 that only shows up once OIDC is on. secrets.ts uses raw fetch for historical reasons; it is debt, not a pattern to copy.

UI state

Zustand for chat/debug stores; useState/useCallback everywhere else. No Redux.

i18n — blocking requirement

Every string: t("namespace.key", "English fallback"). Add the key to src/i18n/locales/en.json, then propagate translations to all 10 other locales (de, fr, es, ar, zh, th, ja, ko, pt, hi) in the same commit. Each editor gets its own namespace (llmEditor.*, rulesEditor.*). Because Arabic ships, every layout must use logical properties.

Tests

• Unit: Vitest + RTL in src/pages/__tests__/, renderPage(type) helper wraps MemoryRouter + QueryClient + ThemeProvider. Assert on data-testid.
• Mocks: MSW handlers in src/test/mocks/handlers.ts. Specific GET handlers must be registered before the generic createResourceHandlers block. Mock data should match the backend Java model.
• E2E: Playwright in e2e/ — including rtl.spec.ts and theme.spec.ts, so a new screen must survive both Arabic and dark mode.

Gates before you call it done

npm run test    # Vitest
npm run build   # includes tsc -b

Pre-commit runs eslint --max-warnings 0 on staged files, then npm run typecheck. Use npm run typecheck (tsc -b), never tsc --noEmit — tsconfig.json is a solution file ("files": [] plus two project references), so --noEmit resolves zero inputs and exits 0 without checking anything. Never commit to main; branch first. Update HANDOFF.md when a phase completes.