dsh-maestro-observe: Local-First Observability for the Maestro Plugin Stack

`dsh-maestro-observe` is a local, lightweight observability tool designed specifically for the DeepSeek Harness and Maestro plugin stacks. It uses SQLite for local storage of traces, costs, latency, and health status, and provides CLI and RPC endpoints for querying. The plugin supports analysis grouped by tool or session, and includes features such as budget control and error monitoring. Developers should be aware of its Node.js version dependency and the fact that sensitive information is redacted before data is persisted.