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# Changelog
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## 2.1.91
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- Added MCP tool result persistence override via `_meta["anthropic/maxResultSizeChars"]` annotation (up to 500K), allowing larger results like DB schemas to pass through without truncation
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- Added `disableSkillShellExecution` setting to disable inline shell execution in skills, custom slash commands, and plugin commands
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- Added support for multi-line prompts in `claude-cli://open?q=` deep links (encoded newlines `%0A` no longer rejected)
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- Plugins can now ship executables under `bin/` and invoke them as bare commands from the Bash tool
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- Fixed transcript chain breaks on `--resume` that could lose conversation history when async transcript writes fail silently
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- Fixed `cmd+delete` not deleting to start of line on iTerm2, kitty, WezTerm, Ghostty, and Windows Terminal
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- Fixed plan mode in remote sessions losing track of the plan file after a container restart, which caused permission prompts on plan edits and an empty plan-approval modal
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- Fixed JSON schema validation for `permissions.defaultMode: "auto"` in settings.json
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- Fixed Windows version cleanup not protecting the active version's rollback copy
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- `/feedback` now explains why it's unavailable instead of disappearing from the slash menu
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- Improved `/claude-api` skill guidance for agent design patterns including tool surface decisions, context management, and caching strategy
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- Improved performance: faster `stripAnsi` on Bun by routing through `Bun.stripANSI`
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- Edit tool now uses shorter `old_string` anchors, reducing output tokens
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## 2.1.90
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- Added `/powerup` — interactive lessons teaching Claude Code features with animated demos
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- Added `CLAUDE_CODE_PLUGIN_KEEP_MARKETPLACE_ON_FAILURE` env var to keep the existing marketplace cache when `git pull` fails, useful in offline environments
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- Added `.husky` to protected directories (acceptEdits mode)
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- Fixed an infinite loop where the rate-limit options dialog would repeatedly auto-open after hitting your usage limit, eventually crashing the session
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- Fixed `--resume` causing a full prompt-cache miss on the first request for users with deferred tools, MCP servers, or custom agents (regression since v2.1.69)
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- Fixed `Edit`/`Write` failing with "File content has changed" when a PostToolUse format-on-save hook rewrites the file between consecutive edits
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- Fixed `PreToolUse` hooks that emit JSON to stdout and exit with code 2 not correctly blocking the tool call
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- Fixed collapsed search/read summary badge appearing multiple times in fullscreen scrollback when a CLAUDE.md file auto-loads during a tool call
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- Fixed auto mode not respecting explicit user boundaries ("don't push", "wait for X before Y") even when the action would otherwise be allowed
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- Fixed click-to-expand hover text being nearly invisible on light terminal themes
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- Fixed UI crash when malformed tool input reached the permission dialog
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- Fixed headers disappearing when scrolling `/model`, `/config`, and other selection screens
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- Hardened PowerShell tool permission checks: fixed trailing `&` background job bypass, `-ErrorAction Break` debugger hang, archive-extraction TOCTOU, and parse-fail fallback deny-rule degradation
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- Improved performance: eliminated per-turn JSON.stringify of MCP tool schemas on cache-key lookup
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- Improved performance: SSE transport now handles large streamed frames in linear time (was quadratic)
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- Improved performance: SDK sessions with long conversations no longer slow down quadratically on transcript writes
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- Improved `/resume` all-projects view to load project sessions in parallel, improving load times for users with many projects
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- Changed `--resume` picker to no longer show sessions created by `claude -p` or SDK invocations
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- Removed `Get-DnsClientCache` and `ipconfig /displaydns` from auto-allow (DNS cache privacy)
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## 2.1.89
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- Added `"defer"` permission decision to `PreToolUse` hooks — headless sessions can pause at a tool call and resume with `-p --resume` to have the hook re-evaluate
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- Added `CLAUDE_CODE_NO_FLICKER=1` environment variable to opt into flicker-free alt-screen rendering with virtualized scrollback
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- Added `PermissionDenied` hook that fires after auto mode classifier denials — return `{retry: true}` to tell the model it can retry
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- Added named subagents to `@` mention typeahead suggestions
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- Added `MCP_CONNECTION_NONBLOCKING=true` for `-p` mode to skip the MCP connection wait entirely, and bounded `--mcp-config` server connections at 5s instead of blocking on the slowest server
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- Auto mode: denied commands now show a notification and appear in `/permissions` → Recent tab where you can retry with `r`
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- Fixed `Edit(//path/**)` and `Read(//path/**)` allow rules to check the resolved symlink target, not just the requested path
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- Fixed voice push-to-talk not activating for some modifier-combo bindings, and voice mode on Windows failing with "WebSocket upgrade rejected with HTTP 101"
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- Fixed Edit/Write tools doubling CRLF on Windows and stripping Markdown hard line breaks (two trailing spaces)
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- Fixed `StructuredOutput` schema cache bug causing ~50% failure rate when using multiple schemas
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- Fixed memory leak where large JSON inputs were retained as LRU cache keys in long-running sessions
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- Fixed a crash when removing a message from very large session files (over 50MB)
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- Fixed LSP server zombie state after crash — server now restarts on next request instead of failing until session restart
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- Fixed prompt history entries containing CJK or emoji being silently dropped when they fall on a 4KB boundary in `~/.claude/history.jsonl`
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- Fixed `/stats` undercounting tokens by excluding subagent usage, and losing historical data beyond 30 days when the stats cache format changes
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- Fixed `-p --resume` hangs when the deferred tool input exceeds 64KB or no deferred marker exists, and `-p --continue` not resuming deferred tools
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- Fixed `claude-cli://` deep links not opening on macOS
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- Fixed MCP tool errors truncating to only the first content block when the server returns multi-element error content
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- Fixed skill reminders and other system context being dropped when sending messages with images via the SDK
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- Fixed PreToolUse/PostToolUse hooks to receive `file_path` as an absolute path for Write/Edit/Read tools, matching the documented behavior
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- Fixed autocompact thrash loop — now detects when context refills to the limit immediately after compacting three times in a row and stops with an actionable error instead of burning API calls
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- Fixed prompt cache misses in long sessions caused by tool schema bytes changing mid-session
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- Fixed nested CLAUDE.md files being re-injected dozens of times in long sessions that read many files
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- Fixed `--resume` crash when transcript contains a tool result from an older CLI version or interrupted write
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- Fixed misleading "Rate limit reached" message when the API returned an entitlement error — now shows the actual error with actionable hints
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- Fixed hooks `if` condition filtering not matching compound commands (`ls && git push`) or commands with env-var prefixes (`FOO=bar git push`)
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- Fixed collapsed search/read group badges duplicating in terminal scrollback during heavy parallel tool use
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- Fixed notification `invalidates` not clearing the currently-displayed notification immediately
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- Fixed prompt briefly disappearing after submit when background messages arrived during processing
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- Fixed Devanagari and other combining-mark text being truncated in assistant output
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- Fixed rendering artifacts on main-screen terminals after layout shifts
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- Fixed voice mode failing to request microphone permission on macOS Apple Silicon
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- Fixed Shift+Enter submitting instead of inserting a newline on Windows Terminal Preview 1.25
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- Fixed periodic UI jitter during streaming in iTerm2 when running inside tmux
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- Fixed PowerShell tool incorrectly reporting failures when commands like `git push` wrote progress to stderr on Windows PowerShell 5.1
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- Fixed a potential out-of-memory crash when the Edit tool was used on very large files (>1 GiB)
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- Improved collapsed tool summary to show "Listed N directories" for `ls`/`tree`/`du` instead of "Read N files"
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- Improved Bash tool to warn when a formatter/linter command modifies files you have previously read, preventing stale-edit errors
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- Improved `@`-mention typeahead to rank source files above MCP resources with similar names
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- Improved PowerShell tool prompt with version-appropriate syntax guidance (5.1 vs 7+)
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- Changed `Edit` to work on files viewed via `Bash` with `sed -n` or `cat`, without requiring a separate `Read` call first
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- Changed hook output over 50K characters to be saved to disk with a file path + preview instead of being injected directly into context
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- Changed `cleanupPeriodDays: 0` in settings.json to be rejected with a validation error — it previously silently disabled transcript persistence
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- Changed thinking summaries to no longer be generated by default in interactive sessions — set `showThinkingSummaries: true` in settings.json to restore
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- Documented `TaskCreated` hook event and its blocking behavior
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- Preserved task notifications when backgrounding a running command with Ctrl+B
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- PowerShell tool on Windows: external-command arguments containing both a double-quote and whitespace now prompt instead of auto-allowing (PS 5.1 argument-splitting hardening)
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- `/env` now applies to PowerShell tool commands (previously only affected Bash)
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- `/usage` now hides redundant "Current week (Sonnet only)" bar for Pro and Enterprise plans
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- Image paste no longer inserts a trailing space
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- Pasting `!command` into an empty prompt now enters bash mode, matching typed `!` behavior
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- `/buddy` is here for April 1st — hatch a small creature that watches you code
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## 2.1.87
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- Fixed messages in Cowork Dispatch not getting delivered
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## 2.1.86
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- Added `X-Claude-Code-Session-Id` header to API requests so proxies can aggregate requests by session without parsing the body
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- Added `.jj` and `.sl` to VCS directory exclusion lists so Grep and file autocomplete don't descend into Jujutsu or Sapling metadata
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- Fixed `--resume` failing with "tool_use ids were found without tool_result blocks" on sessions created before v2.1.85
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- Fixed Write/Edit/Read failing on files outside the project root (e.g., `~/.claude/CLAUDE.md`) when conditional skills or rules are configured
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- Fixed unnecessary config disk writes on every skill invocation that could cause performance issues and config corruption on Windows
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- Fixed potential out-of-memory crash when using `/feedback` on very long sessions with large transcript files
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- Fixed `--bare` mode dropping MCP tools in interactive sessions and silently discarding messages enqueued mid-turn
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- Fixed the `c` shortcut copying only ~20 characters of the OAuth login URL instead of the full URL
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- Fixed masked input (e.g., OAuth code paste) leaking the start of the token when wrapping across multiple lines on narrow terminals
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- Fixed official marketplace plugin scripts failing with "Permission denied" on macOS/Linux since v2.1.83
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- Fixed statusline showing another session's model when running multiple Claude Code instances and using `/model` in one of them
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- Fixed scroll not following new messages after wheel scroll or click-to-select at the bottom of a long conversation
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- Fixed `/plugin` uninstall dialog: pressing `n` now correctly uninstalls the plugin while preserving its data directory
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- Fixed a regression where pressing Enter after clicking could leave the transcript blank until the response arrived
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- Fixed `ultrathink` hint lingering after deleting the keyword
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- Fixed memory growth in long sessions from markdown/highlight render caches retaining full content strings
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- Reduced startup event-loop stalls when many claude.ai MCP connectors are configured (macOS keychain cache extended from 5s to 30s)
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- Reduced token overhead when mentioning files with `@` — raw string content no longer JSON-escaped
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- Improved prompt cache hit rate for Bedrock, Vertex, and Foundry users by removing dynamic content from tool descriptions
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- Memory filenames in the "Saved N memories" notice now highlight on hover and open on click
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- Skill descriptions in the `/skills` listing are now capped at 250 characters to reduce context usage
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- Changed `/skills` menu to sort alphabetically for easier scanning
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- Auto mode now shows "unavailable for your plan" when disabled by plan restrictions (was "temporarily unavailable")
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- [VSCode] Fixed extension incorrectly showing "Not responding" during long-running operations
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- [VSCode] Fixed extension defaulting Max plan users to Sonnet after the OAuth token refreshes (8 hours after login)
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- Read tool now uses compact line-number format and deduplicates unchanged re-reads, reducing token usage
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## 2.1.85
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- Added `CLAUDE_CODE_MCP_SERVER_NAME` and `CLAUDE_CODE_MCP_SERVER_URL` environment variables to MCP `headersHelper` scripts, allowing one helper to serve multiple servers
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