- Added locale support in various components, including the Assistant's execution context and agent tools, to improve internationalization.
- Updated the `pickNodeByFilter` function to include a fallback mechanism for host_exec nodes when no container nodes are available.
- Introduced a new `agent_reference` tool for downloading agent source code for read-only study, alongside updates to the `agent_download` tool to restrict downloads to the 'smith' namespace.
- Enhanced documentation and tests to reflect the new functionalities and ensure robust locale extraction and handling.
