フルスクリーンタブとコンパクトチャットの導入

This release introduces quality-of-life improvements to the Agents Window.

Full-screen tabs

Full screen maximizes the right panel so you can focus on a single tab.

Files, changes, canvases, PRs, browsers, and terminals can expand to fill the entire working area. This replaces the agent chat with a floating prompt bar.

Enter and exit full screen by clicking on the expand/contract button in the panel header, using the command palette, or pressing Cmd/Ctrl+Shift+M.

Compact chat responses

Compact chats give you a tighter view of your agent conversations so you can read threads more quickly without losing important context.

Customize tool call density to control how much of the agent's tool activity is shown in each response:

Compact: shows concise results with minimal tool traces

Balanced: includes important intermediate steps

Detailed: provides near-complete step-by-step context

Improvements (8)

Improved PR tabs by adding clearer review states, better reviewer/thread visibility, and more predictable PR tab actions.

Improved long-chat scrolling to make it smoother, added better undo grouping in prompt input, and improved behavior while streaming.

Added clearer status text for background/resumed tasks.

Added cleaner environment/repo selection and better persistence when switching contexts.

Improved MCP auth token lifecycle handling.

Removed noisy in-app terminal notifications and improved shortcut behavior.

Clarified model naming and selection behavior in the model picker and added stronger fallback handling.

Improved search and navigation to make it faster and more reliable in large workspaces.

Bug Fixes (9)

Fixed PR tab bugs affecting branch lookup, header state, and diff loading.

Fixed background task reliability issues like resume failures, interrupt edge cases, and incorrect status scoping on resumed subagents.

Fixed cloud agents bugs blocking setup, state merge/persistence bugs, and multi-repo identity issues.

Fixed MCP/OAuth reliability bugs like transient 401/stale-token cases and large-token handling edge cases.

Fixed edge cases around slash menu + approval regressions, ask-question flow issues, and paste-chunk handling.

Fixed keyboard shortcuts bugs in modals, vim/emacs caret style leakage, and other key handling.

Fixed hook invocation/path-length issues and Git prompt-related regressions.

Fixed model-routing mismatches, proxy body normalization, and thought-chunk forwarding issues.

Fixed webhook auth/hostname resolution, GHES installation persistence, and mirrored-repo behavior.