Claude Code v2.1.293：默认模型换为 Haiku 5.5

What's changed

• Added Claude Haiku 5.5 (claude-haiku-5-5), now the default Haiku model on the Anthropic API — 1M context, $0.10/$0.50 per Mtok ($0.50/$2.50 for prompts over 100K)
• Added agentType to the subagentStatusLine payload, so scripts can tell custom subagent types apart
• Added isDeferred to $.tool.register for mods: false lists the tool's schema in the prompt from the start instead of behind tool search
• Fixed Claude sometimes treating its own last actions before a context compaction as done after it, and retracting or redoing finished work
• Fixed a memory leak where an HTTP MCP connection kept every request it had sent until it closed
• Fixed a message sent while Claude was working being lost when ← moved the session to the background; if a queued message can't move, ← now stays put and says so
• Fixed /model effort ←/→ wrapping past the highest or lowest level, which could accidentally save Low as a model's default effort
• Fixed /tui disconnecting Claude in Chrome in a session started with --chrome, and ignoring --no-chrome
• Fixed Claude being told to continue or message subagents with SendMessage in sessions, including resumed ones, where a host, a permission rule or a --tools list removed that tool
• Fixed subagents and --agent sessions being told a built-in tool was disabled for the whole session when only their own tool list left it out
• Fixed a claude.ai-synced skill's edited description sometimes not reaching the model until a new conversation or /clear
• Fixed claude logs, stop, kill, rm and claude daemon status, stop, uninstall sometimes signing you out when your login had expired or was about to
• Fixed the footer's agents count disappearing after a momentary failure to read the sessions folder (for example, too many open files)
• Fixed a custom agent named worker being shown as "Agent" when it starts, and the agent detail dialog's title losing the agent type once the agent finishes
• Fixed the Artifact tool's transcript row briefly reading Artifact("(unprintable path)") while a publish call was still streaming in
• Fixed the /ultrareview upload on Linux wrongly refusing some repositories, such as one inside another checkout, over a settings file that "could not be parsed" while a sandboxed command was running
• Fixed the /ultrareview upload's refusal over split-index files advising a git command that could leave git unable to read its index
• Fixed replies in very long Remote Control and cloud sessions that could still appear a block at a time instead of streaming in
• Fixed Remote Control uploading a session's starting history again after every credential recovery
• Fixed PushNotification reporting "Remote Control inactive" in sessions started with claude remote-control
• Fixed a mod's hooks on classic.* events being skipped while the plugin hooks worker restarts, which left settings hooks to answer without them
• Fixed claude plugin test failing for mods that call $.session.append; tests can read the appended rows back with the new mock.session
• Fixed claude plugin eval refusing every Bash-granting run on Macs with Docker Desktop (links under ~/.docker/bin); the refusal now names which part of a credential store held the link
• Fixed the Claude apps gateway refusing to start when a desktop policy sets Claude Desktop's built-in browser keys, such as builtinBrowserEnabled
• Fixed claude agents offering bypass permissions that background sessions then ignored when consent was saved only in .claude/settings.local.json or a --settings file; it now asks for consent first, and a session that ignores bypass shows a short notice that stays
• Fixed ← backgrounding a session after 10 seconds while the prompt held unsent text (it now cancels the move) or a question was waiting for your answer
• Fixed Esc, or No without feedback, on a permission prompt not stopping the turn when ← had just been pressed to move the session to the background
• Fixed the agents view briefly replacing the session list with placeholder rows when the sessions folder could not be read (for example, too many open files)
• Fixed path-scoped rules and nested CLAUDE.md files not loading when Claude views a file with a single-file cat, head, tail, sed -n or grep command in the Bash tool instead of the Read tool
• Fixed pasted text that begins and ends with the same words sometimes being sent to Claude as if it had been typed
• Fixed a skill name in pasted text being treated as typed when an accent typed or pasted right after the paste merged into its last letter
• Fixed /feedback returning to the drafts list after Ctrl+O or Ctrl+Z while a report was sending, leaving the send impossible to cancel
• Fixed claude purge stopping silently (exit 0, or a hang in a terminal) when a file or folder could not be deleted; it now deletes the rest, lists what it could not delete, and exits 1
• Fixed keybindings.json checks: a lone " " (space key) is no longer reported as an error, and keys like "ctrl+ k" now get a warning
• Fixed vim mode >> and << on a line of only spaces leaving the cursor past the end of the line, where a following x deleted nothing
• Fixed vim mode: after deleting whole lines in Visual mode (V then d) the cursor lands on the first non-blank, and . after it acts on the cursor's line
• Windows: Fixed stopping a status line, hook, or shell command sometimes terminating an unrelated process that had been given the same process ID
• Reverted the auto mode denial message change from 2.1.281 that told Claude a denial covers the outcome, not only the exact command
• Reverted the 2.1.290 fix for cloud sessions staying asleep after a container restart lost a pending /loop wakeup or scheduled task; Claude is no longer told, and the session stays asleep
• Improved startup for Team and Enterprise organizations: policy and managed settings are fetched earlier, and a stalled request is retried after 3 seconds
• Improved Claude in Chrome: fewer page actions are refused when the browser is slow to report its tabs
• Improved the Claude in Chrome message in cloud sessions when the browser can't be reached: if you belong to more than one organization, it now says the extension must be signed in to the same one, and how to change that
• Improved the Bash edit diff note to say the listed files changed while the command ran, which can include writes by other processes
• Improved artifacts: Claude pins libraries to exact versions two weeks old or older
• Changed claude.ai skill syncing to check for changes about every 40 minutes, instead of every 10, while no session is in use
• Changed the order of agent lists and of MCP servers announced to the model: names with non-ASCII characters now sort after ASCII names
• Changed OpenTelemetry claude_code.at_mention logging to emit at most 100 agent and 100 MCP-resource events each time a prompt is read
• Self-hosted runner: Changed the orchestrator to sleep 4 to 6 seconds between polls instead of a constant 5, so several replicas for one environment stop polling at the same moment
• [Claude Tag] Fixed Claude in Slack saying a workspace isn't set up in Enterprise Grid channels shared across workspaces when Slack labels a message with a workspace that isn't connected
• [Claude Tag] Fixed Claude in Slack stopping mid-task in a channel when an admin changed the channel's connectors, plugins, skills or rules; the change now applies once Claude finishes
• [Claude Tag] Fixed asking Claude in Slack to run a thread's routine now with extra notes starting a separate run that couldn't post back; the run now continues in that thread
• [Claude Tag] Fixed an access bundle's Add a connector dialog in Claude Tag admin settings showing every Google connector as connected after one Google sign-in
• [Claude Tag] Improved Claude Tag admin settings to list an Enterprise Grid that isn't connected yet, with a Connect button