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# Technology Stack and Dependencies

## Core Technologies

- **Runtime**: Bun (JavaScript/TypeScript runtime)
- **Language**: TypeScript
- **Framework**: Hono (lightweight web framework)
- **API Integration**: LLM Gateway (OpenAI Compatible, OpenAI Responses API, Anthropic, Google Gemini), Gitea API
- **Containerization**: Docker, Kubernetes

## Key Dependencies

From [package.json](mdc:package.json):

### Production Dependencies

- **hono**: Lightweight, ultrafast web framework
- **@hono/zod-validator**: Schema validation for Hono
- **zod**: TypeScript-first schema validation
- **openai**: OpenAI API client (used for OpenAI Compatible and Responses providers)
- **@anthropic-ai/sdk**: Anthropic Messages API client
- **@google/genai**: Google Gemini API client
- **axios**: HTTP client for API requests
- **dotenv**: Environment variable management
- **lodash-es**: Utility library

### Development Dependencies

- **typescript**: TypeScript compiler and type definitions
- **tslint**: Code linting
- **@types/node**: Node.js type definitions
- **@types/lodash-es**: Type definitions for lodash-es

## Environment Configuration

The application uses a **DB-first** configuration approach (Portainer model):

- **Environment variables** (minimal, infrastructure-level only):
  - `PORT`: Server port
  - `DATABASE_PATH`: SQLite file path (optional, default: `./data/assistant.db`)
  - `MASTER_KEY_PATH`: Encryption key path (optional, default: `./data/master.key`)
- **Web UI + SQLite DB** ([src/db/](mdc:src/db)): All runtime config — Gitea, Feishu, webhook secret, admin password, review engine, memory settings — managed via Admin Dashboard
- **First-boot seed**: `configManager.seedDefaults()` auto-generates secrets and seeds defaults on first run
- **bun:sqlite**: Embedded database for all configuration persistence (encrypted for sensitive values)