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.serena/memories/tech_stack.md

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+# Technology Stack
+
+## Runtime & Package Manager
+- **Bun**: v1.1.0+ (primary runtime and package manager)
+- **Node.js**: v18.0.0+ (compatibility)
+- **TypeScript**: v5.8.3
+
+## Core Technologies
+- **Turbo**: Monorepo build system
+- **ESBuild**: Fast bundling (integrated with Bun)
+- **Hono**: Lightweight web framework for services
+
+## Databases
+- **PostgreSQL**: Primary transactional database
+- **QuestDB**: Time-series database for market data
+- **MongoDB**: Document storage
+- **Dragonfly**: Redis-compatible cache and event bus
+
+## Queue & Messaging
+- **BullMQ**: Job queue processing
+- **IORedis**: Redis client for Dragonfly
+
+## Web Technologies
+- **React**: Frontend framework (web-app)
+- **Angular**: (based on polyfills.ts reference)
+- **PrimeNG**: UI component library
+- **TailwindCSS**: CSS framework
+
+## Testing
+- **Bun Test**: Built-in test runner
+- **TestContainers**: Database integration testing
+- **Supertest**: API testing
+
+## Monitoring & Observability
+- **Loki**: Log aggregation
+- **Prometheus**: Metrics collection
+- **Grafana**: Visualization dashboards
+
+## Development Tools
+- **ESLint**: Code linting
+- **Prettier**: Code formatting
+- **Docker Compose**: Local infrastructure
+- **Model Context Protocol (MCP)**: Database access in IDE
+
+## Key Dependencies
+- **Awilix**: Dependency injection container
+- **Zod**: Schema validation
+- **pg**: PostgreSQL client
+- **Playwright**: Browser automation for proxy testing