Lemonn News CMS
Standalone internal CMS that will become Lemonn's AI-assisted financial news tool.
It is fully separate from the lemonn.co.in application: its own repo, database and deployment.
Status: research pipeline prototype. The dashboard runs discovery, ranking, claim verification and
drafting; editors edit drafts as articles and mark them ready. Data is in PostgreSQL, behind a
per-user accounts with roles (admin, team, read-only). No background worker or publishing yet.
Stack
Next.js 16 (App Router) · React 19 · TypeScript (strict) · Tailwind CSS 4 · shadcn/ui ·
Prisma 7 (PostgreSQL) · Zod 4 · ESLint · Prettier · Vitest · Playwright
Prerequisites
- Node.js ≥ 20.9
- pnpm 10 (
corepack enable, or npx [email protected] <command>)
- PostgreSQL for running research (runs are stored there); not needed to build the app
Setup
pnpm install # also runs `prisma generate`
cp .env.example .env # then fill in local values
pnpm dev # http://localhost:3000
Scripts
| Script | What it does |
|---|
pnpm dev | Start the dev server |
pnpm build | Production build |
pnpm start | Serve the production build |
pnpm lint | ESLint |
pnpm typecheck | Generate route types and run tsc --noEmit |
pnpm format | Format with Prettier |
pnpm format:check | Check formatting |
pnpm test | Unit tests (Vitest) |
pnpm test:watch | Unit tests in watch mode |
pnpm test:e2e | End-to-end tests (Playwright; starts the dev server) |
pnpm db:generate | Regenerate the Prisma client |
pnpm db:migrate | Create/apply migrations against your local database |
First-time Playwright use needs a browser: pnpm exec playwright install chromium.
Environment variables
See .env.example. All variables are server-only; never prefix secrets with NEXT_PUBLIC_.
| Variable | Required for | Notes |
|---|
DATABASE_URL | Research runs, Prisma CLI | The CMS's own PostgreSQL. Never Lemonn production. |
TAVILY_API_KEY | Verification; sources without sitemap | Also the fallback when a sitemap fails |
GEMINI_API_KEY | Relevance screen, verification, drafts | Without it, ranking is rules only |
GEMINI_MODEL_FAST | Optional | Default gemini-3.5-flash-lite |
GEMINI_MODEL_REASONING | Optional | Default gemini-3.8-flash |
NEWS_RESEARCH_MAX_VERIFY | Optional | Stories verified per run, 1–20 (default 12) |
Adding shadcn/ui components
shadcn/ui is configured in components.json (@/components/ui, cn() in src/lib/utils.ts).
pnpm dlx shadcn@latest add button
Notes
- The company npm mirror quarantines very new releases;
pnpm-workspace.yaml pins vite to the newest version it serves.
