New features - SDK custom system prompts - The TypeScript SDK can now set a custom system prompt for a session, and it is kept when the session resumes - Managed BYOK model defaults - Org admins can now pick BYOK custom models as managed defaults for sessions and subagents in Enterprise Controls - Service account model policies - Service accounts now appear in Enterprise Controls model policies, so admins can set which models each one may use Improvements - Explorer tool access - The built-in explorer droid can now use every read-only tool, including command execution, web search, and MCP tools, while file edits stay blocked - Question prompt keyboard controls - You can now pick answers with Space or the number keys, move between questions with Tab, and go back to edit an answer you already gave - Mermaid diagram rendering - Diagrams in a session now render with the official Mermaid engine, so more diagram types display correctly (app) - Faster session rendering - Long sessions and streaming command output now render with less lag, so scrolling and typing stay responsive while the agent runs (app) - Mission model settings - You can now choose the models and reasoning defaults a mission uses from its settings (app) Bug fixes - Agent question context - The context the agent includes with a question now stays visible while you answer it