Intial Version

.kiro/steering/tech.md

@@ -0,0 +1,55 @@
+# Technology Stack
+
+## Backend
+
+- **Language**: TypeScript (Node.js)
+- **Framework**: Fastify
+- **Scraping**: Playwright (headless Chromium)
+- **Database**: PostgreSQL + TimescaleDB extension
+- **ORM**: Prisma or Drizzle
+- **Job Scheduling**: Node Scheduler or BullMQ
+- **WebSockets**: Native `ws` or Fastify WS plugin
+- **Deployment**: Docker containers
+
+## Frontend (Electron Desktop App)
+
+- **Framework**: Electron 30+
+- **UI Library**: NextJS? + TypeScript/TSX
+- **Build Tool**: Vite
+- **Styling**: TailwindCSS
+- **Charts**: Recharts, ECharts, or TradingView Charting Library
+- **State Management**: Zustand or Recoil
+- **Auto-updates**: electron-updater
+
+## Testing
+
+- **Unit Tests**: Jest
+- **E2E Tests**: Playwright
+- **API Integration**: Supertest or Pact
+
+## Common Commands
+
+```bash
+# Backend
+npm run dev          # Start development server
+npm run build        # Build TypeScript
+npm run test         # Run Jest tests
+npm run scrape       # Manual scrape trigger
+
+# Frontend (Electron)
+npm run dev          # Start Electron in dev mode
+npm run build        # Build production app
+npm run package      # Package for distribution
+npm run test         # Run tests
+
+# Database
+npm run migrate      # Run database migrations
+npm run seed         # Seed initial data
+```
+
+## Performance Requirements
+
+- API latency < 50ms for standard queries
+- Support 5000+ concurrent WebSocket connections
+- Desktop app must handle 50k+ chart datapoints smoothly
+- Scraping frequency: every 5 minutes (configurable)