* feat: add HashiCorp Vault secret storage integration - Create SecretBackend trait abstraction for secret storage - Add VaultBackend implementation with CRUD operations - Integrate secret backend into variable CRUD operations - Add migration functions (DB → Vault and Vault → DB) - Add frontend configuration UI for secret backend - Add test connection and migration endpoints
Windmill API
The API server, exposing functionality to other components and the frontend
This crate exposes both a library as well as a binary target.