Default dark mode gives the app frame, sidebars, and editor distinct neutral shades, subtler file names and badges, and brighter header button hovers.
The area behind the cards and app header is a step darker and follows your color theme, the cards cast a soft shadow with a gap at the sides and bottom, the desktop file list is now opaque, and resize grips appear only when you hover a divider.
The editor, its file list and document side panel now sit in one card, with the terminal and chat in their own cards. The side panel button moved to the end of the tab bar, and dragging the chat or right terminal divider keeps the side panel's width.
Update notices and the feedback card now float in the window's bottom-left corner, so they stay visible when the editor is hidden or the file list is collapsed.
A new header across the top of project windows keeps back, forward, search, the project switcher, Share, sync, settings and resources in one fixed place. The editor footer now shows the current checkout: its project folder and its branch or worktree.
Project windows can now hide the editor from a new Editor header button or View › Show/Hide Editor, letting chat and the terminal fill the window. Opening a document brings the editor back.
Project and single-file windows now have Agents and Terminal buttons at the right of the header that show whether each panel is open and toggle it with one click. They replace the right-edge chat tab, its live-agent dot and the panels' collapse arrows.
When the editor is too narrow for its split panes, it shows one pane at a time with an Editor pane selector, keeping each pane's tabs and reading position.
Windows narrower than 48rem show one of Editor, Agents and Terminal at a time, chosen from the header, keep the others running, and return to your full layout when widened.
When the file sidebar or document panel cannot fit beside the document, it opens as a full-editor cover with Back to editor and Hide, and choosing a destination in it reveals the document.
Choosing the same document heading again now scrolls to its destination.
Showing or hiding Files or the document panel now applies at every window width, so a sidebar you hid stays hidden when the window widens.
Single-file windows now use the shared header and editor cards, with the document panel in the editor card.
On macOS, the window buttons in a single-file window now sit centered in its top bar instead of below the middle.
Keep terminal text readable after changing themes while the terminal is closed.