v2.1.45 is a feature + bugfix release: it adds Claude Sonnet 4.6 support, new configuration options (reading enabledPlugins/extraKnownMarketplaces from --add-dir and customizable spinner tips), and new SDK rate-limit event/types so integrators can monitor utilization, resets, and overages. It also fixes multiple stability and UX issues (Agent Teams on Bedrock/Vertex/Foundry, macOS temp-file sandbox errors, Task tool crashes, autocomplete with pasted images, plugin availability without restart) and improves startup performance and memory usage for large shell outputs, making the tool faster and more reliable for users and embedding apps.