Claude Code Haha v0.5.4

This is a feature release on top of v0.5.3, headlined by the Agent Teams workbench and dynamic Workflow orchestration, plus provider updates and a round of stability fixes.

New & Improved

• Agent Teams workbench: visualize multi-agent teams in the desktop app — members, tasks, a communication feed, and a dependency-lane canvas showing what each member is doing in real time.
• Dynamic Workflow orchestration: the model writes and runs orchestration scripts on the fly, driving subagents concurrently or in pipelines. Runs show in the activity panel as phases with their agents, and can be paused, retried, or resumed.
• Grok Official now defaults to grok-4.6, with xhigh reasoning effort.
• Create a git branch right from the launch picker (#1190).
• Built-in agents (Explore, Plan, …) accept model and effort overrides in settings.
• The transcript folds tool activity into a compact summary instead of one card per tool call (#1177).

Fixes

• Restored undo for real turns: any tool outside a small allowlist previously disabled rewind for the whole range, leaving undo effectively dead in v0.5.3 (#1192). Undo now restores the tracked files and warns about the rest.
• Fixed IM channels listing only the default project since v0.5.1 — Telegram / Feishu / WeChat / DingTalk / WhatsApp can now reach other projects within an allowed-roots boundary (#1191).
• Fixed subagent tasks leaking into the main session's task list and activity panel.
• Fixed the subagent detail page staying blank while a run was still in flight.
• H5 shows AskUserQuestion cards before the tool stream completes (#1220).
• Fixed Grok xhigh effort being clamped to high, and the effort slider snapping back for live-catalog models.
• Stripped protected thinking after switching models (#1215).
• Fixed worktree paths, unloaded-session tab cleanup (#1217), and Windows pet and chat rendering (#1187, [#1144]).
• The workbench now reports real member and task state instead of stale "working" statuses.

Installation

Download the installer for your platform and architecture from the Assets section at the bottom of this page:

• macOS: Claude-Code-Haha-0.5.4-mac-arm64.dmg / Claude-Code-Haha-0.5.4-mac-x64.dmg
• Windows: Claude-Code-Haha-0.5.4-win-x64.exe / Claude-Code-Haha-0.5.4-win-arm64.exe
• Linux x64: AppImage, deb, or Claude-Code-Haha-0.5.4-linux-x86_64.rpm
• Linux ARM64: AppImage, deb, or Claude-Code-Haha-0.5.4-linux-aarch64.rpm