From 8593a501381538279b7de738632f0f33af166422 Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" <41898282+github-actions[bot]@users.noreply.github.com> Date: Fri, 29 May 2026 01:19:42 +0000 Subject: [PATCH] Sync release notes (2026-05-29) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - **CHANGELOG.md** (+47 / -0) • # 2.1.154 --- CHANGELOG.md | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/CHANGELOG.md b/CHANGELOG.md index 59203c1..92ea9fb 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,5 +1,52 @@ # Changelog +## 2.1.154 + +- Opus 4.8 is here! Now defaults to high effort · /effort xhigh for your hardest tasks +- Introducing dynamic workflows: ask Claude to create a workflow and it orchestrates work across tens to hundreds of agents in the background, so you can take on larger, more complex tasks. Run `/workflows` to view your runs +- Fast mode on Opus 4.8 is now available at a fraction of its previous cost: 2x the standard rate for 2.5x the speed +- The lean system prompt is now the default for all models except Haiku, Sonnet, and Opus 4.7 and earlier +- Claude now reserves the multiple-choice question prompt for decisions it genuinely cannot make itself, instead of asking when it already has enough context to proceed +- `/simplify` now runs a cleanup-only review (reuse, simplification, efficiency, altitude) and applies the fixes, instead of running the full `/code-review --fix` bug-hunting review +- Renamed the `/effort` slider labels from "Speed"/"Intelligence" to "Faster"/"Smarter" for clarity +- `claude agents`: type `! ` to run a shell command as a background session you can attach to and detach from. Also available as `claude --bg --exec ''` +- `claude agents`: `/logout` now signs you out instead of being sent to a background session +- `←←` to open the agents view now works on Bedrock, Vertex, Foundry, and with telemetry disabled +- Claude in Chrome: pick which connected browser to use via `/chrome` → "Select browser…", or in-chat when a browser action runs with multiple connected +- Plugins can now declare `defaultEnabled: false` in `plugin.json` or a marketplace entry; enable them with `/plugin` or `claude plugin enable`. Dependencies of enabled plugins are still enabled automatically +- The `/plugin` Discover tab now pins plugins whose relevance signals match the current directory with a "suggested for this directory" annotation +- Streaming tool execution is now always enabled, including when telemetry is disabled or on Bedrock/Vertex/Foundry (previously behind a feature flag) +- Stdio MCP server subprocesses now receive `CLAUDE_CODE_SESSION_ID` and `CLAUDECODE=1` in their environment +- `claude mcp list`/`get` now show unapproved `.mcp.json` servers as `⏸ Pending approval` instead of auto-approving and connecting when output is piped +- `/remote-control` autocomplete now shows "Disconnect Remote Control" when Remote Control is already active +- Added Claude Opus 4.8 support and 4.7 → 4.8 migration guidance to the `/claude-api` skill +- Deprecated `CLAUDE_CODE_OPUS_4_6_FAST_MODE_OVERRIDE` (will be removed on 06/01). To use fast mode on Opus 4.6, switch with `/model claude-opus-4-6[1m]` and then `/fast on` +- Improved the auto-mode classifier's detection of data exfiltration, particularly bulk transfers of repository contents +- Fixed `rm -rf $HOME` not being blocked as a dangerous path when `HOME` has a trailing slash +- Fixed `$TMPDIR` resolving to different directories in sandboxed vs unsandboxed Bash commands within the same session +- Fixed unreadable highlighted-row text in `claude agents` when the Claude Code theme doesn't match the terminal background +- Fixed background-agent completion notifications triggering premature "out of context" behavior on some 1M-context models +- Fixed background-session classifier losing the user's goal when a scheduled `/command` fires +- Fixed pinned background sessions respawning every minute after a Claude Code update, causing repeated agent-start notifications and process churn at idle +- Fixed background sessions stuck at "blocked", "running", or "working" not retiring after the idle grace period +- Fixed subagents in background sessions bypassing the worktree-isolation guard and writing to the shared checkout +- Fixed orphaned `claude --bg-pty-host` processes spinning at 100% CPU after the daemon exits on macOS +- Fixed number key shortcuts not working for options shown below the divider in option dialogs +- Fixed `worktree.baseRef: "head"` resolving to the main checkout's HEAD instead of the current worktree's HEAD when spawning subagents or calling `EnterWorktree` from inside a linked worktree +- Fixed a stray leading space on wrapped lines when the previous line ended exactly at the terminal width +- Fixed intermittent terminal rendering corruption in VS Code by capping the number of distinct colors the thinking spinner produces +- Fixed plan file names including `[Image #N]` / `[Pasted text #N]` placeholders when a plan-mode prompt starts with pasted images or text +- Fixed a phantom expand/click affordance on colored tool output: short ANSI-colored lines that fit on screen no longer show a "ctrl+o to expand" hint +- Fixed a single invalid `allowedMcpServers`/`deniedMcpServers` entry in managed settings discarding all managed-settings policy; the bad entry is now dropped with a `claude doctor` warning +- Fixed API 400 errors on models that don't support the effort parameter when `CLAUDE_CODE_ALWAYS_ENABLE_EFFORT` is set +- Windows: Fixed update failures caused by `claude.exe` being in use showing a generic error instead of telling you to close other sessions and retry +- Removed the stale "& for background" hint from the shortcuts help panel +- [VSCode] Auto mode no longer requires the bypass-permissions setting to appear in the mode picker, and a dismissable notice on the new-session screen explains auto mode the first time it's active +- Fixed the task panel below the prompt showing a stray unselectable "main" row when only a workflow is running +- Fixed /mcp tools list and tool detail rendering when MCP servers have long or multi-line tool names or long descriptions +- Fixed the /model picker not showing fast mode pricing on the Default option for API (pay-as-you-go) users when fast mode is on +- Fixed auto mode incorrectly blocking actions with "could not evaluate this action" when the safety classifier ran out of output tokens while reasoning + ## 2.1.153 - Added `skipLfs` option to `github`/`git` plugin marketplace sources to skip Git LFS downloads during clone and update