keyword-automation

The system generally follows good practices for handling secrets via environment variables and uses parameterized queries for SQLite to prevent SQL injection. However, the `src/server.js` webhook receiver, as provided, does not explicitly implement signature validation for platforms like WhatsApp or Slack, which is a critical security measure against spoofed messages, despite `.env` variables (`WHATSAPP_VERIFY_TOKEN`, `SLACK_SIGNING_SECRET`) indicating it's intended. Direct execution of Python MCP servers via `child_process.exec` (as seen in `src/services/emailOrchestrator.js`) could pose a risk if commands were constructed with unsanitized user input, but in the provided code, input is `JSON.stringify`'d and piped, which mitigates simple injection attacks. The `scripts/simple-encrypt-env.js` for `.env` file encryption is a positive security feature.