Scaffold Next.js frontend with generated OpenAPI client and core views

Next.js (App Router) + React 19 + TypeScript + Tailwind v4, with shadcn-style UI primitives (Button, Input, Card, Label via cva/tailwind-merge). A typed API client is generated from the backend OpenAPI spec with openapi-typescript + openapi-fetch (npm run gen:api); the committed openapi.json/schema.d.ts are the snapshot.

Views: landing, login, register, tree list + create, and tree detail with person list + create. Auth rides the same-origin HttpOnly session cookie the backend sets (Caddy proxies /api/*), so no token handling in JS. Built as a standalone container. Mobile-first; next build is clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: Justin Paul <justin@jpaul.me>

frontend/lib/api/client.ts

@@ -0,0 +1,10 @@
+import createClient from "openapi-fetch";
+
+import type { paths } from "./schema";
+
+// Same-origin in production (Caddy proxies /api/* to the backend). Override with
+// NEXT_PUBLIC_API_BASE_URL for split local dev. credentials:"include" sends the
+// HttpOnly session cookie the backend issues on login.
+const baseUrl = process.env.NEXT_PUBLIC_API_BASE_URL ?? "";
+
+export const api = createClient<paths>({ baseUrl, credentials: "include" });