2.1.78 — Claude code - Product release notes & changelog tool

Added StopFailure hook event that fires when the turn ends due to an API error (rate limit, auth failure, etc.)
Added ${CLAUDE_PLUGIN_DATA} variable for plugin persistent state that survives plugin updates; /plugin uninstall prompts before deleting it
Added effort, maxTurns, and disallowedTools frontmatter support for plugin-shipped agents
Terminal notifications (iTerm2/Kitty/Ghostty popups, progress bar) now reach the outer terminal when running inside tmux with set -g allow-passthrough on
Response text now streams line-by-line as it’s generated
Fixed git log HEAD failing with “ambiguous argument” inside sandboxed Bash on Linux, and stub files polluting git status in the working directory
Fixed cc log and --resume silently truncating conversation history on large sessions (>5 MB) that used subagents
Fixed infinite loop when API errors triggered stop hooks that re-fed blocking errors to the model
Fixed deny: ["mcp__servername"] permission rules not removing MCP server tools before sending to the model, allowing it to see and attempt blocked tools
Fixed sandbox.filesystem.allowWrite not working with absolute paths (previously required // prefix)
Fixed /sandbox Dependencies tab showing Linux prerequisites on macOS instead of macOS-specific info
Security: Fixed silent sandbox disable when sandbox.enabled: true is set but dependencies are missing — now shows a visible startup warning
Fixed .git, .claude, and other protected directories being writable without a prompt in bypassPermissions mode
Fixed ctrl+u in normal mode scrolling instead of readline kill-line (ctrl+u/ctrl+d half-page scroll moved to transcript mode only)
Fixed voice mode modifier-combo push-to-talk keybindings (e.g. ctrl+k) requiring a hold instead of activating immediately
Fixed voice mode not working on WSL2 with WSLg (Windows 11); WSL1/Win10 users now get a clear error
Fixed --worktree flag not loading skills and hooks from the worktree directory
Fixed CLAUDE_CODE_DISABLE_GIT_INSTRUCTIONS and includeGitInstructions setting not suppressing the git status section in the system prompt
Fixed Bash tool not finding Homebrew and other PATH-dependent binaries when VS Code is launched from Dock/Spotlight
Fixed washed-out Claude orange color in VS Code/Cursor/code-server terminals that don’t advertise truecolor support
Added ANTHROPIC_CUSTOM_MODEL_OPTION env var to add a custom entry to the /model picker, with optional _NAME and _DESCRIPTION suffixed vars for display
Fixed ANTHROPIC_BETAS environment variable being silently ignored when using Haiku models
Fixed queued prompts being concatenated without a newline separator
Improved memory usage and startup time when resuming large sessions
[VSCode] Fixed a brief flash of the login screen when opening the sidebar while already authenticated
[VSCode] Fixed “API Error: Rate limit reached” when selecting Opus — model dropdown no longer offers 1M context variant to subscribers whose plan tier is unknown