Google Antigravity 2.4.3

2.4.3 July 28, 2026 Preview tabs, MCP timeouts, file attachments, and performance fixes Added preview tabs, attachment support for .json, .md, and .csv files, MCP timeouts, keyboard shortcuts, and various bug fixes and improvements. Improvements (17) Added a keyboard shortcut (Cmd+L / Ctrl+L) to quickly quote selected text into the chat input. Added support for attaching .json and .md files to the input box with distinct visual badges. Added preview (temporary) tabs to the auxiliary pane, allowing files to open in a temporary slot that is reused until promoted to a permanent tab (e.g., via double-click). Added a timeout for MCP server connections and tool calls to prevent the agent from hanging indefinitely. Added an 'Only Unread' filter option to the Conversation History dropdown. Added support for uploading and attaching CSV (.csv) files in chat as plain text. Added a 'Download Diagnostics' command to the command palette to download a diagnostics package (containing logs and agent state) for troubleshooting. Added tooltips to file links in markdown views, showing their full path on hover. Refined command approval rules to reduce redundant permission prompts for everyday tools. Improved the speed of conversation switching by optimizing trajectory summary list selectors. Improved authentication error messages to show the specific failure reason. Draft comments are now automatically saved and preserved across sessions. Improved interface responsiveness by preventing unnecessary re-renders when toggling sidebars or auxiliary panes. Improved accessibility in the Settings modal with better heading hierarchy and keyboard focus management. Updated the default settings screen name from 'Agent' to 'General' and updated copy for inherited settings ('Use Global' to 'Inherit General'). Restored the default 5-second auto-dismiss behavior for in-app notifications. Optimized scroll performance in conversation lists and panels, especially during long chats. Fixes (10) Fixed an iss